请登录

免费注册
全部商品
电子元器件
方案中心
工业品
PDF资料
购物车 0
上传BOM

产品分类

找货询价

一对一服务 找料无忧

专属客服

服务时间

周一 - 周六 9:00-18:00

QQ咨询

一对一服务 找料无忧

专属客服

服务时间

周一 - 周六 9:00-18:00

会员中心
购物车
技术支持

一对一服务 找料无忧

专属客服

服务时间

周一 - 周六 9:00-18:00

售后咨询

一对一服务 找料无忧

专属客服

服务时间

周一 - 周六 9:00-18:00

9TCS1083BNLG

型号：

9TCS1083BNLG

品牌：

IDT[ INTEGRATED DEVICE TECHNOLOGY ]

页数：

39 页

PDF大小：

493 K

下载PDF手册
PRELIMINARY DATASHEET  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR,  
& PWM FAN CONTROLLER FOR PORTABLE DEVICES  
9TCS1083  
Description  
Features  
The 9TCS1083 is a highly programmable IC that integrates  
clock synthesizers with a PWM Fan controller and multiple  
temperature sensors for hardware thermal protection.  
Thermal Sensor  
• Two temperature sensor channels  
• Both H/W & S/W programmable over/under temperature  
alarms  
• No Calibration required in application  
• Diode failure detection  
• Support SMBUS Alert  
• Accuracy: 1ꢀC (+60ꢀC to +100ꢀC); 2ꢀC (0ꢀC to  
+100ꢀC)  
The device has an ultra-low-power 32.768 kHz frequency  
generator to support Real Time Clocks (RTC). This device  
can generate the 32.768 kHz frequency up to four years of  
life powered by a CR2032 coincell battery. The 9TCS1083  
can output computer system clock frequencies of 24, 25, 27  
and 48 MHz which reduces the component count on the  
circuit board.  
• Offset register for system calibration  
• Series resistor cancellation feature  
The fan controller is pulsed width modulated (PWM) used  
for the temperature proportional speed control. The device  
is highly configurable through I2C for ease and flexibility of  
use. The fan controller has three different modes of  
operations and will work with multiple pole, brushless DC  
fans. An integrated Start-up Timer ensures reliable motor  
start-up and turn-on or follows a detected fault condition.  
Fan Controller  
• High frequency or low frequency PWM outputs for use  
with 4-Wire Fans  
• TACH inputs to measure fan speed  
The 9TCS1083 includes temperature monitor function that  
measures through two external diodes. The temperature  
sensor is optimized to be accurate within 1ꢀC between the  
temperature range of 60ꢀC to 100ꢀC. This device is highly  
• OS Independent Automatic Fan Speed Control based on  
thermal information  
• Dynamic TMIN Control Mode to optimize system  
acoustics  
2
programmable through the use of I C to set high and low  
• Default startup at 100% PWM for all fans for robust  
operation  
limits for all the temperature channels as well as setting  
critical limits. The hardware limits drive dedicated ALERT  
and THERM pins for system shutdown.  
System Clock PLL Synthesizers  
The 9TCS1083 is available in a 32-pin QFN package and is  
available for commercial temperature range.  
• Scalable low voltage VDD I/O (1.5V to 1.05V) to reduce  
power consumption (applies to 25MHz output)  
• Integrated series termination resistors  
• Selectable – Single-ended 24MHz/27MHz/48MHz clock  
output @ VDD3.3V  
• 3 – Single ended 25MHz clock outputs (buffer out)  
• 32.768 kHz outputs with < 1.8µA power consumption for  
system RTC circuit  
Applications  
• Notebook Computers  
• Netbook Computers  
• Smartbook Computers  
• Consumer Portable Devices  
• Embedded Systems  
• Networking Equipment (i.e. Routers, Switches)  
• Network Area Storage  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
1
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Block Diagram  
VDD_TS  
Sample  
Regulator  
Current  
RAM  
11 bits  
ADC  
Digital  
ALERT#  
THERM#  
Channel 1  
Channel 2  
Analog  
MUX  
Reference  
Voltage  
Fault Detect  
TACH  
PWM  
Fan Controller  
POR  
V_bat  
V_3.3  
Power  
Switch  
VDD_RTC  
32K_A  
Amplitude  
Control  
32.768K  
DCO  
32K_A_IO  
32K_B_IO  
SMBCLK  
SMBDAT  
SMBUS  
VDD_32KB  
Fraction N  
Divider  
32K_B / 25M_C  
VDDIO_25MA  
25M_A  
X1  
X2  
25M_IO  
25M_IO  
Xtal  
VDD_25MB  
25M_B  
GND  
VDD_24M  
24M_48M  
VDD_27M  
27M_48M  
24/48M_IO  
27/48M_IO  
Ultra  
Low Power  
PLL  
Preferred drive strengths for single-ended outputs.  
Transmission lines to load do not share series resistors.  
Ω
Ω
Desktop (Zo=50 ) and mobile (Zo=55 ) have the same drive strength.  
Number of Loads Actually Driven.  
Match Point for N  
& P Voltage /  
Current (mA)  
Number of Loads  
to Drive  
1 Load Rs = 2 Loads Rs= 3 Loads Rs =  
0.56 / 33  
Ω
Ω
Ω
Ω
1
2
3
33 [39  
]
]
]
-
-
-
D.C.Drive Strength  
Ω
(17 )  
0.92 / 66  
39 [43  
Ω
22 [27 ]  
Ω
Ω
Ω
(14 )  
1.15 / 99  
43 [43  
Ω
27 [33 ]  
15 [22 ]  
Ω Ω  
Ω
Ω
Ω
)
(11.6  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
2
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Pin Assignment  
32 31 30 29 28 27 26 25  
Thermal_DXP2  
Thermal_DXN2  
32K_A  
1
2
3
4
5
6
7
8
24 THERM#  
23 ALERT#  
22 VDD_RTC_OUT  
21 V_3.3  
VDDIO_25MA  
GND  
9TCS1083  
20 X2  
25M_A  
19 X1  
VDD_24  
18 SMBDATA  
17 SMBCLK  
SEL_24*/24M_48M  
9
10 11 12 13 14 15 16  
* Internal Pull-Up Resistor  
24M/27M/48Mhz outputs require external series resistors on Board.  
Power Group  
Pin Number  
Description  
VDD  
4
GND  
33  
5
VDDIO_25MA IO power  
VDDIO_24 IO power  
VDDIO_27  
7
10  
13  
21  
22  
26  
29  
30  
12  
33  
33  
27  
25  
27  
27  
VDDIO_25B IO Power  
V3.3  
VDD_RTC_Out  
VDD_TS power  
VDDIO_32KB Power  
VBAT power  
* Pin33: Thermal pad (connect to GND)  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
3
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Pin Descriptions  
PIN # PIN NAME  
TYPE  
IN External thermal diode P (Channel 2)  
IN External thermal diode N (Channel 2)  
OUT RTC clock 32.768KHz output A, typical 1V peak to peak.  
PWR Power for 25MHz_A output, typical 1.05V to 1.8V.  
PWR Ground pin  
DESCRIPTION  
1
2
3
4
5
6
7
Thermal_DXP2  
Thermal_DXN2  
32K_A  
VDDIO_25MA  
GND  
25M_A  
OUT 25MHz_A output, typical 1.05V to 1.8V pending on VDDIO_25MA voltage.  
PWR Power for 24/48MHz output, typical 3.3V.  
VDD_24M  
24MHz enable latched input / Programmable free‐running 24/48M clock output.  
SEL_24 selects the functionality of 24_48M output as the following:  
1 = 24M output (Default)  
0 = 48M output  
27MHz enable latched input / Programmable free‐running 27/48M clock output.  
SEL_27 selects the functionality of 27_48M output as the following:  
1 = 27M output (default)  
8
SEL_24*/24M_48M  
SEL_27*/27M_48M  
I/O  
9
I/O  
0 = 48M output  
10 VDD_27M  
11 25M_B  
12 GND  
PWR Power for 27/48 MHz output, typical 3.3V.  
OUT 25MHz_B output, typical 3.3V peak to peak.  
PWR Ground pin  
13 VDD_25MB  
PWR Power for LDO and main circuit.  
This 3.3V LVTTL input notifies device to sample latched inputs and start up on first high assertion or  
exit powerdown mode on subsequent assertions. Low enters powerdown mode.  
14 PWRGD/PD#  
IN  
15 TACH  
IN Fan controller TACH signal input  
16 PWM  
OUT Fan controller PWMsignal output  
17 SMBCLK  
18 SMBDAT  
19 X1  
20 X2  
21 V_3.3  
22 VDD_RTC_OUT  
23 ALERT#  
24 THERM#  
25 GND_TS  
26 VDD_TS  
27 GND  
IN SMBUS clock. 3.3V tolerant.  
I/O SMBUS data. 3.3V tolerant.  
IN Crystal input. Connect to 25MHz crystal.  
OUT Crystal output. Connect to 25MHz crystal.  
PWR Power for 32K PLL core. Connect to system's 3.3V standby power rail.  
OUT Power for chipset RTC circuit.  
OUT Open drain interrupt output for SMBUS alert pin.  
OUT Open drain interrupt output for external hardware connection.  
PWR Ground pin for thermal sensor function  
PWR Power for thermal sensor function, typical 3.3V.  
PWR Ground pin  
25MHz_C output select pin / Programmable free‐running 32.768khz or 25MHz clock output.  
SEL_25 selects the functionality of 32K_25M output as the following:  
1 = 25MHz output (Default)  
28 SEL_25*/32KB_25M_C  
I/O  
0 = 32.768kHz output  
29 VDD_32KB  
30 VBAT  
31 Thermal_DXN1  
32 Thermal_DXP1  
33 Thermal Pad  
PWR Power for 32.768kHz_B output, typical 3.3V.  
PWR Power for 32kHz_A output. Connect to coin cell battery  
IN external thermal diode N  
IN external thermal diode P  
PWR Connect to GND.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
9TCS1083 REV 0.8 011612  
4
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Frequency and Output Selection Tables  
Clock Output Selection Table  
Remark  
Pin number Setting  
Output  
48MHz  
L
-
8
H
24MHz  
default, internal pull high  
L
48MHz  
-
9
H
27MHz  
default, internal pull high  
-
default, internal pull high  
L
32.768kHz_B  
25MHz_C  
28  
H
Output Selection Table A  
Power Supply  
VDDIO_Control  
Outputs  
25M_A  
V_Bat  
V_3.3  
VDD_32KB VDDIO_25A VDD_25B  
32K_A  
32K_B  
25M_B  
VDD_RTC  
2.3~3.0  
2.3~3.0  
2.3~3.0  
2.3~3.0  
2.3~3.0  
0
0
0
0
0
0
0
ON  
ON  
ON  
ON  
ON  
OFF  
OFF  
ON  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
Vbat  
V3.3  
V3.3  
V3.3  
V3.3  
3.31  
3.31  
3.31  
3.31  
0
3.3  
3.3  
3.3  
0
1.05~1.52  
1.05~1.52  
0
ON  
3.3  
ON  
ON  
Note 1: When V3.3 is applied, XTAL will always be ON. 32K source will switch to an analog PLL. Fan control will be ON.  
Note 2: If amplitude greater than 1.5V is required on 25MHz_A output, please contact IDT support.  
Output Selection Table B  
Power Supply  
Outputs  
Thermal  
Sensor  
OFF  
OFF  
OFF  
VDD_24M1  
V_3.3  
VDD_27M  
VDD_TS  
24_48M  
27_48M  
Fan Control  
3.3  
3.3  
3.3  
3.3  
0
0
0
3.3  
3.3  
0
0
0
OFF  
ON  
ON  
ON  
OFF  
OFF  
ON  
ON  
ON  
ON  
ON  
3.3  
3.3  
3.3  
3.3  
ON  
ON  
Note 1: When either VDD_24M, VDD_27M or VDD_TS is ON, V_3.3 should be ON.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
5
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Absolute Maximum Ratings  
Stresses above the ratings listed below can cause permanent damage to the 9TCS1083. These ratings, which are standard  
values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other  
conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute  
maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over  
the recommended operating temperature range.  
PARAMETER  
SYMBOL  
VDDxxx  
CONDITIONS  
MIN  
MAX  
3.6  
UNITS  
V
Notes  
1,2  
Maximum Supply Voltage  
Core/Logic Supply  
Maximum Supply Voltage  
Maximum Input Voltage  
Minimum Input Voltage  
VDDIOxxx  
Core/Logic Supply  
3.3V LVCMOS Inputs  
Any Input  
3.6  
3.6  
V
V
V
1,2  
1,2,3  
1,2  
VIH  
VIL  
GND - 0.5  
-65  
ꢀC  
ꢀC  
Storage Temperature  
Case Temperature  
Ts  
Tcase  
-
-
150  
115  
1,2  
1,2  
1 Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.  
2 Operation under these conditions is neither implied, nor guaranteed.  
3 Maximum input voltage is not to exceed maximum VDD  
Electrical Characteristics–SMBus Interface  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
2.7  
MAX  
3.6  
UNITS  
V
Notes  
1
SMBus Voltage  
VDD  
VOLSMB  
@ IPULLUP  
Low-level Output Voltage  
Current sinking at  
0.4  
V
1
IPULLUP  
TRI2C  
SMB Data Pin  
4
mA  
1
VOLSMB = 0.4 V  
SCLK/SDATA  
Clock/Data Rise Time  
SCLK/SDATA  
(Max VIL - 0.15) to  
(Min VIH + 0.15)  
(Min VIH + 0.15) to  
(Max VIL - 0.15)  
1000  
300  
ns  
ns  
1
1
1
TFI2C  
Clock/Data Fall Time  
Maximum SMBus Operating  
FSMBUS  
Block Mode  
400  
kHz  
Frequency  
1 Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.  
AC Electrical Characteristics–Input/Common Parameters  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
MAX  
1.8  
UNITS  
ms  
Notes  
1
From VDD Power-Up or de-  
assertion of PD# to 1st clock  
Differential output enable after  
PD# de-assertion  
TSTAB  
Clk Stabilization  
Tdrive_PD#  
TDRPD  
300  
us  
1
1 Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
6
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Electrical Characteristics–Input/Supply/Common Parameters  
PARAMETER  
Ambient Operating Temp  
Supply Voltage  
SYMBOL  
Tambient  
V_3.3  
CONDITIONS  
-
MIN  
0
MAX  
70  
UNITS  
ꢀC  
V
Notes  
Supply Voltage  
Other Supply Voltages  
Supply Voltage  
Supply Voltage  
3.135  
3.135  
0.9975  
2.3  
3.465  
3.465  
1.575  
3.465  
Supply Voltage  
VDD_xx  
V
Supply Voltage  
VDDIO_25MA  
V_bat  
V
Supply Voltage  
V
Input High Voltage  
Input Low Voltage  
VIHSE  
VILSE  
Single-ended inputs  
Single-ended inputs  
2
VDD + 0.3  
0.8  
V
V
1,4  
1,4  
VSS - 0.3  
Low Threshold Input-  
High Voltage  
Low Threshold Input-  
Low Voltage  
VIH_FS  
3.3 V +/-5%  
3.3 V +/-5%  
0.7  
VDD + 0.3  
V
1
VIL_FS  
IIN  
VSS - 0.3  
-5  
0.35  
5
V
1
Input Leakage Current  
VIN = VDD , VIN = GND  
Inputs with pull or pull down  
resistors  
uA  
1,3  
Input Leakage Current  
IINRES  
-200  
2.4  
200  
uA  
1
V
IN = VDD , VIN = GND  
Single-ended outputs, IOH = -  
1mA  
Single-ended outputs, IOL = 1 mA  
Output High Voltage  
Output Low Voltage  
VOHSE  
VOLSE  
V
V
1,2  
1,2  
1
0.4  
50  
Full active mode, CL = Full load,  
3.3V Rail  
IDD3.3OP  
mA  
IDD3.3PD#  
IDD3.3WOL  
IDD3.3RTC  
Complete Power-Down, 3.3V Rail  
10  
25  
mA  
mA  
uA  
1
1
1
3.3V Operating Supply  
Current  
WOL Mode with 25MA running,  
3.3V Rail  
RTC Mode with 32KA running,  
3.3V Rail  
0.1  
Full active mode, CL = Full load,  
IDDIO_OP  
5
mA  
1
VDDIO Rails  
Complete Power-Down,  
VDDIO Rails  
IDDIO_PD#  
IDDDIO_WOL  
IDDIO_RTC  
1
mA  
mA  
uA  
1
1
1
1
VDDIO Operating Supply  
Current  
WOL Mode with 25MA running,  
VDDIO Rails  
RTC Mode with only 32KA  
running, VDDIO Rails  
RTC Mode with 32KA running,  
V_bat Rail  
10  
0.5  
1.8  
V_bat Operating Supply  
Current  
IDD_V_bat  
uA  
25MHz Typical  
Input Frequency  
Fi  
VDD = 3.3 V  
MHz  
nH  
pF  
1
1
1
1
1
Pin Inductance  
Lpin  
7
5
6
6
CIN  
Logic Inputs  
Output pin capacitance  
X1 & X2 pins  
1.5  
Input Capacitance  
COUT  
CINX  
pF  
pF  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 27 (unless otherwise specified)  
1 Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.  
2Signal is required to be monotonic in this region.  
3 Input leakage current does not include inputs with pull-up or pull-down resistors  
4 3.3V referenced inputs are: SCLK, SDATA, SEL_25, SEL_24, SEL_27, PWRGD.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
7
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
AC Electrical Characteristics–Power Management  
Output Clock Power Consumption Table  
Power Supply  
Power Consumption @ 2' transmission line  
Outputs  
V_bat / V_3.3  
I_V_bat  
I_V_3.3  
I_VDD_32KB I_VDD_25M  
32K_A  
32K_A  
32K_A+B  
2.3~3.3  
2.3~3.3  
2.3~3.3  
2.3~3.3  
2.3~3.3  
1.8uA  
0
0
0
1uA  
1uA  
1uA  
0
0
0
1mA  
2mA  
0
0
0
0
2mA  
2mA  
2mA  
2mA  
32K, 25M_A  
32K_A+B,25MA+B  
Note: When V_3.3 is applied, XTAL will always be ON. 32K source will switch to an analog PLL.  
Fan control will be ON  
Power consumption @ 2' transmission line  
I_V3.3 I_VDD_24M I_VDD_27M I_VDD_TS  
Power Supply  
VDD_24/27/TS  
V_3.3  
3.3  
3.3  
3.3  
3.3  
0
24Mhz  
24/27Mhz  
2mA  
2mA  
2mA  
2mA  
0
0
0
1mA  
1mA  
0
0
0
3mA  
3mA  
3mA  
24/27Mhz+Thermal+Fan  
0.8mA  
Note: When either VDD_24M, VDD_27M or VDD_TS is ON, V3.3 should be ON  
Power Switch (VBAT/V33 -> VDD_RTC)  
Integrated power switch detects the VDD_RTC SW to coin battery (VBAT) or main power supply (V33).  
When there is no V33 (V33=0), the SW will connect the VDD_RTC to VBAT; when V33 goes higher than 2.5V, the VDD_RTC  
will be switched to V33 with no delay. After V33 goes lower than 2.3V, the VDD_RTC will be switched to VBAT, no delay.  
V_bat 3.0V  
V_3.3  
VDD_RTC=V_bat  
VDD_RTC=V_3.3  
VDD_RTC=Vbat  
V_bat  
VDD_RTC  
2.5V  
2.3V  
V_3.3 < 2.5V  
V_3.3 < 2.3V  
When VDD_RTC = VBAT, the power SW circuit consumes < 100nA.  
When VDD_RTC = V33, the power consumption on VBAT needs to be “0”.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
8
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Electrical Characteristics–USB48MHz  
PARAMETER  
Long Accuracy  
Clock period  
SYMBOL  
ppm  
Tperiod  
CONDITIONS  
see Tperiod min-max values  
48.00MHz output nominal  
MIN  
-100  
MAX  
100  
UNITS NOTES  
ppm  
ns  
1,2  
1,2  
1
20.8313 20.8354  
Output High Voltage  
Output Low Voltage  
VOH  
VOL  
IOH = -1 mA  
IOL = 1 mA  
2.4  
0.4  
-33  
-33  
30  
V
V
mA  
mA  
mA  
mA  
V/ns  
V/ns  
%
1
1
1
1
1
1
1
1
1
V OH @MIN = 1.0 V  
Output High Current  
Output Low Current  
IOH  
IOL  
V
OH@MAX = 3.135 V  
VOL @ MIN = 1.95 V  
OL @ MAX = 0.4 V  
V
38  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
tSLR  
tSLR  
Measured from 0.8 to 2.0 V  
Measured from 2.0 to 0.8 V  
VT = 1.5 V  
0.5  
0.5  
45  
2.5  
2.5  
55  
dt1  
Jitter, Cycle to cycle  
tjcyc-cyc  
VT = 1.5 V  
350  
ps  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 27 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
Electrical Characteristics–24MHz  
PARAMETER  
Long Accuracy  
Clock period  
SYMBOL  
ppm  
CONDITIONS  
MIN  
-100  
MAX  
100  
UNITS NOTES  
see Tperiod min-max values  
24.00MHz output nominal  
ppm  
ns  
1,2  
1,2  
1
Tperiod  
41.6625 41.6708  
Output High Voltage  
Output Low Voltage  
VOH  
VOL  
IOH = -1 mA  
IOL = 1 mA  
2.4  
0.4  
-33  
-33  
30  
V
V
mA  
mA  
mA  
mA  
V/ns  
V/ns  
%
1
1
1
1
1
1
1
1
1
V OH @MIN = 1.0 V  
Output High Current  
Output Low Current  
IOH  
IOL  
V
OH@MAX = 3.135 V  
VOL @ MIN = 1.95 V  
OL @ MAX = 0.4 V  
V
38  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
tSLR  
tSLR  
Measured from 0.8 to 2.0 V  
Measured from 2.0 to 0.8 V  
VT = 1.5 V  
0.5  
0.5  
45  
4
4
dt1  
55  
350  
Jitter, Cycle to cycle  
tjcyc-cyc  
VT = 1.5 V  
ps  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 27 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
9
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Electrical Characteristics–25M_B & 25M_C  
PARAMETER  
Long Accuracy  
Clock period  
SYMBOL  
ppm  
CONDITIONS  
MIN  
-100  
MAX  
100  
UNITS NOTES  
see Tperiod min-max values  
25.00MHz output nominal  
ppm  
ns  
1,2  
1,2  
1
Tperiod  
39.99600 40.00400  
Output High Voltage  
Output Low Voltage  
VOH  
VOL  
IOH = -1 mA  
IOL = 1 mA  
2.4  
0.4  
-29  
-23  
29  
V
V
mA  
mA  
mA  
mA  
V/ns  
V/ns  
%
1
1
1
1
1
1
1
1
1
V OH @MIN = 1.0 V  
Output High Current  
Output Low Current  
IOH  
IOL  
V
OH@MAX = 3.135 V  
VOL @ MIN = 1.95 V  
OL @ MAX = 0.4 V  
V
27  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
tSLR  
tSLR  
Measured from 0.8 to 2.0 V  
Measured from 2.0 to 0.8 V  
VT = 1.5 V  
0.5  
0.5  
40  
4
4
dt1  
60  
500  
Jitter, Cycle to cycle  
tjcyc-cyc  
VT = 1.5 V  
ps  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs =0 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
Electrical Characteristics–25MHz_A (Low Voltage output)  
PARAMETER  
Long Accuracy  
Clock period  
SYMBOL  
ppm  
Tperiod  
CONDITIONS  
MIN  
-100  
MAX  
100  
UNITS  
ppm  
ns  
Notes  
1,2  
1,2  
see Tperiod min-max values  
25.00MHz output nominal  
39.99600 40.00400  
Output High Voltage  
Output Low Voltage  
Output High Current  
Output Low Current  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
VOH  
VOL  
IOH  
IOH = -1 mA  
IOL = 1 mA  
Vtop-0.1  
0.1  
V
V
1
1
VOH =0.83xVtop  
-3  
-16  
25  
4
mA  
mA  
V/ns  
V/ns  
%
1
IOL  
VOL = 0.13V  
1
tSLR  
tFLR  
dt1  
Measured from 20% to 80%  
Measured from 80% to 20%  
VT = Vtop/2  
0.5  
0.5  
40  
1,3  
1,3  
1,4  
1,4  
4
60  
500  
Jitter  
tjcyc-cyc  
VT = Vtop/2  
ps  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 0 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
10  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Electrical Characteristics–27MHz  
PARAMETER  
Long Accuracy  
Clock period  
SYMBOL  
ppm  
Tperiod  
CONDITIONS  
MIN  
-50  
MAX  
50  
UNITS  
ppm  
ns  
Notes  
1,2  
1,2  
see Tperiod min-max values  
27.000MHz output nominal  
37.0365 37.0376  
Output High Voltage  
Output Low Voltage  
VOH  
VOL  
IOH = -1 mA  
IOL = 1 mA  
2.4  
0.4  
-29  
-23  
29  
V
V
1
1
1
1
1
1
1
1
1
1
V OH @MIN = 1.0 V  
mA  
mA  
mA  
mA  
V/ns  
V/ns  
%
Output High Current  
Output Low Current  
IOH  
IOL  
V
OH@MAX = 3.135 V  
VOL @ MIN = 1.95 V  
OL @ MAX = 0.4 V  
V
27  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
tSLR  
tFLR  
Measured from 0.8 to 2.0 V  
Measured from 2.0 to 0.8 V  
VT = 1.5 V  
1
1
4
4
dt1  
45  
55  
200  
Jitter, Cycle to cycle  
tjcyc-cyc  
Cycle to Cycle, VT = 1.5 V  
ps  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 27 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
Electrical Characteristics–32KHz_A (Low Voltage Output)  
PARAMETER  
Long Accuracy  
SYMBOL  
ppm  
CONDITIONS  
see Tperiod min-max values  
MIN  
32.768 Typical  
MAX  
UNITS  
kHz  
Notes  
1,2  
Output High Voltage  
Output Low Voltage  
VOH  
VOL  
32K_A Output  
32K_A Output  
0.8  
1.2  
0.3  
V
V
1
1
+/-10  
0.86  
ppm  
sec/day  
1
1
Initial Frequency Error  
32KINI  
0C to 70C  
RTC Frequency Error  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
32KRTC_7D  
tSLR  
7-day measurement  
Measured from 20% to 80%  
Measured from 80% to 20%  
VT = V_bat/2  
8
sec  
V/ns  
V/ns  
%
1
1
1
1
0.03 typ  
0.03 typ  
tFLR  
dt1  
40  
60  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 2pF with Rs = 0 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
Electrical Characteristics–32KHz_B  
PARAMETER  
SYMBOL  
CONDITIONS  
see Tperiod min-max values  
32K_B Output  
MIN  
32.768 Typical  
0.9975  
MAX  
UNITS  
kHz  
V
Notes  
1,2  
1
Long Accuracy  
Output High Voltage  
ppm  
VOH  
3.465  
Output Low Voltage  
VOL  
32K_B Output  
0.3  
+/-10  
0.86  
2
V
ppm  
sec/day  
V/ns  
1
1
1
1
Initial Frequency Error  
32KINI  
0C to 70C  
Rising Edge Slew Rate  
Falling Edge Slew Rate  
Duty Cycle  
tSLR  
tFLR  
dt1  
Measured from 20% to 80%  
Measured from 80% to 20%  
VT = V_bat/2  
0.3  
0.3  
40  
2
V/ns  
%
1
1
60  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
Ω
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 2pF with Rs = 0 (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
11  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Recommended 25MHz Crystal Specification  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
MAX  
UNITS NOTES  
Frequency Accuracy  
Faccur  
@25C  
+/-10  
ppm  
ppm  
ppm  
uW  
1
1
1
1
1
Frequency Error over  
temperature  
Ferrt  
Faging  
DL  
-10C ~ 70C  
1 year  
+/-10  
+/-1  
100  
Frequency Aging  
Driver Level  
8pF Typical  
Crystal Load Capacitance  
CL  
Parallel Resonance  
pF  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5% (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
Electrical Characteristics–Thermal Sensor Controller  
PARAMETER  
Local Sensor Accuracy  
Resolution  
SYMBOL  
CONDITIONS  
0C<TA<60C  
60C<TA<100C  
MIN  
MAX  
2
1
1
2
1
1
1/64  
UNITS  
C
C
C
C
C
C
Sec  
Notes  
1
1
1
1
1
1
1
0C<TA<60C  
60C<TA<100C  
Remote Sensor Accuracy  
Raccu  
Resolution  
Rs  
Conversion Rate  
CR  
16  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5% (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
Electrical Characteristics–Fan Controller  
PARAMETER  
PWM frequency  
PWM Duty Cycle  
Tachometer Range  
SYMBOL  
PWM  
CONDITIONS  
MIN  
25  
MAX  
27  
100  
4
UNITS  
kHz  
%
Notes  
1
1
1
DUTY  
TACH  
1
POLE  
*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,  
VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5% (unless otherwise specified)  
1Guaranteed by design and characterization, not 100% tested in production.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
12  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
General SMBus Serial Interface Information for 9TCS1083  
How to Write  
How to Read  
• Controller (host) sends a start bit  
• Controller (host) sends the write address  
• IDT clock will acknowledge  
• Controller (host) will send a start bit  
• Controller (host) sends the write address  
• IDT clock will acknowledge  
• Controller (host) sends the beginning byte location = N  
• IDT clock will acknowledge  
• Controller (host) sends the beginning byte location = N  
• IDT clock will acknowledge  
• Controller (host) sends the byte count = X  
• IDT clock will acknowledge  
• Controller (host) will send a separate start bit  
• Controller (host) sends the read address  
• IDT clock will acknowledge  
• IDT clock will send the data byte count = X  
• IDT clock sends Byte N+X-1  
• Controller (host) starts sending Byte N through Byte  
N+X-1  
• IDT clock will acknowledge each byte one at a time  
• Controller (host) sends a Stop bit  
• IDT clock sends Byte 0 through Byte X (if X was  
(H)  
written to Byte 8)  
• Controller (host) will need to acknowledge each byte  
• Controller (host) will send a not acknowledge bit  
• Controller (host) will send a stop bit  
Index Block Write Operation  
Index Block Read Operation  
Controller (Host)  
starT bit  
Slave Address  
WR WRite  
IDT (Slave/Receiver)  
Controller (Host)  
starT bit  
IDT (Slave/Receiver)  
T
T
Slave Address  
WR  
WRite  
ACK  
ACK  
ACK  
ACK  
ACK  
ACK  
Beginning Byte = N  
Data Byte Count = X  
Beginning Byte N  
Beginning Byte = N  
RT  
Repeat starT  
Slave Address  
ReaD  
RD  
ACK  
O
O
O
O
O
O
Data Byte Count=X  
Beginning Byte N  
ACK  
ACK  
Byte N + X - 1  
ACK  
O
O
O
P
stoP bit  
O
O
O
Byte N + X - 1  
N
P
Not acknowledge  
stoP bit  
Read Address  
Write Address  
D3  
D2  
(H)  
H)  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
13  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte0  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
0
1
SIGN  
64C  
32C  
16C  
8C  
PWD  
0
1
1
1
1
1
1
1
CH1 Diode ALERT High  
Temperature Limit  
ALERT_TH1  
RW  
-
4C  
2C  
1C  
Note: Register readback uses 2's Complement  
Byte1  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
0
1
SIGN  
64C  
32C  
16C  
8C  
PWD  
0
1
1
1
1
1
1
1
CH2 Diode ALERT High  
Temperature Limit  
ALERT_TH2  
RW  
-
4C  
2C  
1C  
Note: Register readback uses 2's Complement  
Byte 2 Reserved Register  
Byte3  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
0
1
SIGN  
64C  
32C  
16C  
8C  
PWD  
1
0
0
0
0
0
0
1
CH1 Diode ALERT Low  
Temperature Limit  
ALERT_TL1  
RW  
-
4C  
2C  
1C  
Note: Register readback uses 2's Complement  
Byte4  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
0
1
SIGN  
64C  
32C  
16C  
8C  
PWD  
1
0
0
0
0
0
0
1
CH2 Diode ALERT Low  
Temperature Limit  
ALERT_TL2  
RW  
-
4C  
2C  
1C  
Note: Register readback uses 2's Complement  
Byte 5 Reserved Register  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
14  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte6  
Name  
Control Function  
Enable Temp-Sensor Channel1  
Enable Temp-Sensor Channel2  
Reserved  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
CH1_EN  
CH2_EN  
Reserved  
Reserved  
Disable  
Disable  
-
Enable  
Enable  
-
0
0
1
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Reserved  
-
-
00 = 1  
10 = 3  
00 = 1  
10 = 8  
01 = 2  
11 = 4  
01 = 4  
11 = 16  
Consecutive ALERT  
Average_Fact  
Consecutive ALERT Report  
Average the converted temperature  
Byte7  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
0
1
Reserved  
64C  
32C  
16C  
8C  
PWD  
0
1
1
1
1
1
1
1
CH1 Diode THERMALTemperature  
Limit  
THERMAL1  
RW  
-
4C  
2C  
1C  
Byte8  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
0
1
Reserved  
64C  
32C  
16C  
8C  
PWD  
0
1
1
1
1
1
1
1
CH2 Diode THERMALTemperature  
Limit  
THERMAL2  
RW  
-
4C  
2C  
1C  
Byte 9 Reserved Register  
Byte10  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
1.28C  
0.64C  
0.32C  
0.16C  
4C  
1
0
0
0
1
0
0
0
D_A1  
CH1 Gain (Slope) Coefficient  
-
2C  
D_B1  
CH1 Offset Coefficient  
1C  
0.5C  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
15  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte11  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
1.28C  
0.64C  
0.32C  
0.16C  
4C  
1
0
0
0
1
0
0
0
D_A2  
CH2 Gain (Slope) Coefficient  
-
2C  
D_B2  
CH2 Offset Coefficient  
1C  
0.5C  
Byte12  
Name  
Reserved  
MASK2  
MASK1  
Control Function  
Reserved  
Type  
RW  
RW  
RW  
RW  
RW  
0
1
-
PWD  
-
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
MASK Channel2 ALERT  
MASK Channel1 ALERT  
Non-Mask  
Non-Mask  
Mask  
Mask  
16C  
8C  
THERMAL_HYS  
THERMAL Limit Hysteresis  
RW  
RW  
RW  
-
4C  
2C  
1C  
1
0
0
Bit2  
Bit1  
Bit0  
Byte13  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Reserved  
Type  
R
0
1
PWD  
Reserved  
Reserved  
CH2 High  
CH2 Low  
CH1 High  
CH1 Low  
CH1 Fault  
CH2 Fault  
-
-
0
0
0
0
0
0
0
0
Reserved  
R
-
-
Channel 2 ALERT High Alarm  
Channel 2 ALERT Low Alarm  
Channel 1 ALERT High Alarm  
Channel 1 ALERT Low Alarm  
Channel 1 Diode Fault (Open)  
Channel 2 Diode Fault (Open)  
R
Non-Flag  
Non-Flag  
Non-Flag  
Non-Flag  
Non-Flag  
Non-Flag  
Flag  
Flag  
Flag  
Flag  
Flag  
Flag  
R
R
R
R
R
Byte14  
Bit7  
Name  
BUSY  
HIGH  
LOW  
Control Function  
ADC is converting  
Type  
R
0
1
PWD  
Non-Flag  
Non-Flag  
Non-Flag  
Flag  
Flag  
Flag  
0
0
0
One of the Channels ALERT High  
One of the Channels ALERT Low  
R
Bit6  
R
Bit5  
One of the EXT-Channel  
Open/Short  
FAULT  
R
Non-Flag  
Flag  
0
Bit4  
Reserved  
CH1_THERMAL  
CH2_THERMAL  
Reserved  
Reserved  
R
R
R
R
-
-
0
0
0
0
Bit3  
Bit2  
Bit1  
Bit0  
Channel1 THERMAL Alarm  
Channel2 THERMAL Alarm  
Reserved  
Non-Flag  
Non-Flag  
-
Flag  
Flag  
-
Byte15  
Name  
Control Function  
Clear all the Alarm Flag  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
Fault_Clear  
One-Shot  
No Clear  
Clear  
0
0
0
0
0
1
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
One-Shot Temperature Conversion  
Enable Dynamic average  
Disable Oneshot  
Do OneShot  
DYN_AVE_EN  
Conv. Rate 3  
Conv. Rate 2  
Conv. Rate 1  
Conv. Rate 0  
Reserved  
Disable Dynamic Average Enable Dynamic Average  
See Detail From Convert Ratio Table  
Reserved  
-
-
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
16  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte16  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
R
0
1
SIGN  
64  
32  
16  
8
PWD  
0
0
0
0
0
0
0
0
R
R
R
TEMP_CH1<10:3>  
MSB of Channel 1 Temperature  
-
R
R
4
R
2
R
1
Byte17  
Name  
Control Function  
Reserved  
Type  
R
0
-
1
PWD  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
-
0
0
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Reserved  
R
-
-
Reserved  
R
-
-
-
Reserved  
R
-
Reserved  
R
-
-
R
0.5  
0.25  
TEMP_CH1<2:0>  
LSB of Channel 1 Temperature  
R
-
R
0.125  
0
Bit0  
Byte18  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
R
0
1
SIGN  
64  
32  
16  
8
PWD  
0
0
0
0
0
0
0
0
R
R
R
TEMP_CH2<10:3>  
MSB of Channel 2 Temperature  
-
R
R
4
R
2
R
1
Byte19  
Name  
Control Function  
Reserved  
Type  
R
0
-
1
PWD  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
-
0
0
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Reserved  
R
-
-
Reserved  
R
-
-
-
Reserved  
R
-
Reserved  
R
-
-
R
0.5  
0.25  
TEMP_CH2<2:0>  
LSB of Channel 2 Temperature  
R
-
R
0.125  
0
Bit0  
Byte 20 ~ Byte 21 Reserved Registers  
Byte22  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
R
0
1
128  
64  
32  
16  
8
PWD  
0
0
0
0
0
0
0
0
R
R
R
TACH_MEASURE<7:0>  
LSB of TACH Measurement  
-
R
R
4
R
2
R
1
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
17  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte23  
Name  
Control Function  
Reserved  
Type  
R
0
-
1
PWD  
Reserved  
Reserved  
Reserved  
-
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Reserved  
R
-
-
Reserved  
R
-
-
R
4096  
2048  
R
TACH_MEASURE<12:8>  
MSB of TACH Measurement  
R
R
R
-
1024  
512  
0
0
0
Bit2  
Bit1  
Bit0  
256  
Byte24  
Bit7  
Name  
Control Function  
Type  
0
1
PWD  
RW  
00 - Direct Drive Mode  
01 - Thermal Trigger Mode  
1
Mode Select  
Select the FAN Operating Mode  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
10 - Dynamic PWM Mode  
00 - 25KHz  
11 - Reserved  
01 - 22KHz  
0
0
0
0
1
0
1
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Freq_Sel  
Edge  
Select the PWM frequency  
FAN Type Selection  
10 - 27KHz  
11 - Reserved  
01 - 2 Poles FAN  
11 - 4 Poles FAN  
01 - 32  
00 - 1Pole FAN  
10 - 3 Poles FAN  
00 - 0  
Error Range  
TACH Detect Tolerant Error Rang  
10 - 64  
11 - 128  
Byte25  
Bit7  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
0
1
PWD  
00 - 250ms  
10 - 1s  
01 - 500ms  
11 - 2s  
0
1
1
1
Spin-Up Time  
The Time For Spin-Up  
Bit6  
Bit5  
000 - 30%, 001 - 35%, 010 - 40%,  
011 - 45%, 100 - 50%, 101 - 55%,  
110 - 60%, 111 - 65%  
Spin-Up Duty  
PWM Duty-Cycle For Spin-Up  
Bit4  
RW  
RW  
RW  
RW  
0
0
1
0
Bit3  
Bit2  
Bit1  
Bit0  
00 - 3  
10 - 5  
-
01 - 4  
11 - 6  
-
Spin-Up cnt  
Reserved  
Time Out Times For Spin-Up  
Reserved  
Byte26  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
1
PWD  
0
0
0
0
0
0
0
0
1/2  
1/4  
1/8  
Duty_Cycle<10:3>  
MSB of PWM Duty-Cycle Setting  
-
1/16  
1/32  
1/64  
1/128  
Byte27  
Bit7  
Name  
Control Function  
Type  
RW  
0
1
PWD  
1/256  
1/512  
1/1024  
0
0
Duty_Cycle<2:0>  
LSB of PWM Duty-Cycle Setting  
-
RW  
Bit6  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
1
1
0
1
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
000 - 100ms, 001 - 200ms, 010 - 300ms, 011 - 400m,  
100 - 500ms, 101 - 600ms, 110 - 700ms, 111 - 800ms  
Update Time  
T_Hys  
TACH Detect Update Time  
00 - 2C  
01 - 5C  
Temperature Hysteresis For FAN's  
Trigger Point  
10 - 10C  
11 - 15C  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
18  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte28  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
Reserved  
64C  
32C  
16C  
8C  
PWD  
0
1
1
1
1
1
1
1
First Temperature Trigger Point of  
FAN  
TL_FAN  
-
4C  
2C  
1C  
Byte29  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
Reserved  
64C  
32C  
16C  
8C  
PWD  
0
1
1
1
1
1
1
1
Second Temperature Trigger Point  
of FAN  
TH_FAN  
-
4C  
2C  
1C  
Byte30  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
4096  
2048  
1024  
512  
256  
128  
64  
1
1
1
1
1
1
1
1
The Maximum Limit of TACH  
Number  
TACH_MAX  
-
32  
Byte31  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
512  
256  
128  
64  
32  
16  
8
PWD  
0
0
0
0
0
0
0
0
The Minimum Limit of TACH  
Number  
TACH_MIN  
-
4
Byte32  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
4096  
2048  
1024  
512  
256  
128  
64  
0
0
0
0
0
0
0
0
MSB TACH threshold of Static  
Mode(T>TL_FAN)  
TACH_S1<12:5>  
-
32  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
19  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte33  
Bit7  
Name  
Control Function  
Type  
RW  
0
1
16  
8
PWD  
0
0
0
RW  
Bit6  
LSB TACH threshold of Static  
Mode(T>TL_FAN)  
TACH_S1<4:0>  
-
RW  
4
Bit5  
RW  
RW  
RW  
RW  
RW  
2
0
0
0
1
0
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
1
-
Reserved  
Reserved  
-
00 - CH1  
01 - CH2  
11 - Reserved  
Temperature Channel Selection For  
Fan  
FAN_CH_SEL  
10 - Reserved  
Byte34  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
4096  
2048  
1024  
512  
256  
128  
64  
0
0
0
0
0
0
0
0
MSB TACH threshold of Static  
Mode(T>TH_FAN)  
TACH_S2<12:5>  
-
32  
Byte35  
Bit7  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
0
1
16  
8
PWD  
0
0
0
0
Bit6  
LSB TACH threshold of Static  
Mode(T>TH_FAN)  
TACH_S2<4:0>  
-
4
Bit5  
2
Bit4  
RW  
RW  
1
0
0
Bit3  
Bit2  
FAN MASK  
SEL_ALERT  
Mask Fan Fault  
0=normal  
1=masked  
00 - ALERT=Temp-Sensor  
Alert  
RW  
RW  
01 - ALERT=FAN Fault  
0
0
Bit1  
Bit0  
Select the ALERT Source  
10 - ALERT=Temp-Senso 10 - ALERT=Temp-Senso  
Alert or FAN Fault  
Alert and FAN Fault  
Byte36  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
128  
64  
32  
16  
8
PWD  
0
0
0
0
1
0
0
0
The PWM DutyCycle  
Incremental/Decremental Step  
PWM Step  
-
4
2
1
Byte37  
Name  
Control Function  
Reserved  
Type  
R
0
-
-
-
-
-
-
1
-
-
-
-
-
-
PWD  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
0
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Reserved  
R
Reserved  
R
Reserved  
R
Reserved  
R
Reserved  
R
FAN TACH measurement is <  
Minimum limit (Too Fast)  
FAN TACH measurement is >  
Maximum limit (Too Slow)  
FAN_Fault1  
FAN_Fault2  
R
R
Non-Flag  
Non-Flag  
Flag  
Flag  
0
0
Bit1  
Bit0  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
20  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte38  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
R
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD  
0
0
0
0
0
0
0
0
R
R
R
TACH_AIM_OUT  
Targeted TACH Readback  
R
R
R
R
Byte39  
Name  
Control Function  
Reserved  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
0
-
-
-
-
-
-
1
-
-
-
-
-
-
PWD  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
0
0
0
0
0
0
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
SEL_DIV2  
SEL_XTAL  
Temp-Sensor Reference CLK DIV2  
I2C Clock Source selection  
RW  
RW  
TS_REF=25MHz  
Free-Run OSC  
TS_REF=12.5M  
XTAL  
0
0
Bit1  
Bit0  
Byte 40 Reserved Register  
Byte41  
Name  
Control Function  
Stop 27M_48M output  
Stop 24M 48M output  
Type  
RW  
0
1
PWD  
STOP_27M_48M  
STOP_24M_48M  
Stopped  
Stopped  
Run  
Run  
1
1
Bit7  
Bit6  
RW  
Enable pin for 25M_C after at  
PWRGD=0  
Enable pin for 25M_B after at  
PWRGD=0  
Enable pin for 25M_A after at  
PWRGD=0  
EN_STOP25M_C  
EN_STOP25M_B  
EN_STOP25M_A  
RW  
RW  
RW  
Free-Run  
Free-Run  
Free-Run  
Stoppable  
Stoppable  
Stoppable  
1
1
0
Bit5  
Bit4  
Bit3  
STOP_25M_C  
STOP_25M_B  
STOP_25M_A  
Stop 25M_C output  
RW  
RW  
RW  
Stopped  
Stopped  
Stopped  
Run  
Run  
Run  
1
1
1
Bit2  
Bit1  
Bit0  
Stop 25M_B output  
Stop 25M_A output  
Byte42  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD  
MSB  
0
0
0
1
1
1
1
1
-
-
-
BYTE COUNT Register  
Bit[7:0]  
-
-
-
LSB  
Byte 43 ~ Byte 46 Reserved Registers  
Byte47  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD  
0
0
0
0
0
0
0
1
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
REV_ID  
Revision ID  
VENDOR_ID  
Vendor ID (IDT=0001)  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
21  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Byte 48 ~ Byte 63 Reserved Registers  
Byte64  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
PWD  
LCKBYPASSB  
PLL Lock Bypassb  
Bypass  
Not Bypas  
1
0
0
1
1
0
0
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
REF COUNT<6:0>  
PLL M Counter  
Byte65  
Bit7  
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD  
0
0
0
1
1
0
1
1
VCO COUNT<9:2>  
PLL N COUNTER  
Byte 66 Reserved Register  
Byte67  
Bit7  
Name  
Control Function  
Type  
0
1
PWD  
RW  
00 = 0.5V/ns  
01 = 1.0V/ns  
0
SL<1:0>(25MHzB)  
25M_B Slew Rate Control  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
10 = 1.0V/ns  
00 = 1,0V/ns  
10 = 1.5V/ns  
00 = 1,0V/ns  
10 = 1.5V/ns  
00 = 1,0V/ns  
10 = 1.5V/ns  
11 = 1.5V/ns  
01 = 1.5V/ns  
11 = 2.0V/ns  
01 = 1.5V/ns  
11 = 2.0V/ns  
01 = 1.5V/ns  
11 = 2.0V/ns  
1
0
1
0
1
0
1
Bit6  
Bit5  
Bit4  
Bit3  
Bit2  
Bit1  
Bit0  
SL<1:0>(25MHzA)  
SL<1:0>(27MHz)  
SL<1:0>(24MHz)  
25M_A Slew Rate Control  
27M Slew Rate Control  
24M Slew Rate Control  
*****************************************************************************************************************************************************************************  
All reserved bits and reserved bytes in this SMBus table should not be overwritten at any instance. Writing to  
these reserved bits and bytes may cause unexpected behavior. IDT does not warrant any application issue going  
forward if continuing to overwrite these reserve bits and bytes.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
22  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Frequency Generator 32.768 kHz  
1. When the system is not power ON, V_3.3 is not ready and  
IDT 9TCS1083 is powered with the coin cell battery. The  
32kHz comes from the DCO with the digital calibration to  
keep the accuracy.  
Recommended 25MHz Quartz Crystal  
Specifications  
SMD 25MHz AT cut crystal and maximum driver level at  
100µW, for example TXC.  
2. After V_3.3 is ready, the 9TCS1083 creates a seamless  
switch power from V_bat to V_3.3 and the calibration will go  
to full speed: this will happen every 2~3ms to keep the  
accuracy and the 32K source will be switched to 25MHz  
oscillator with Fraction-N divider to get to 0ppm.  
VBAT Battery Recommendations and  
Connection Considerations  
Recommended to use coin cell battery CR2032, CR2025 or  
equivalent.  
32.768K DCO uses a 25Mhz crystal oscillator for calibration  
reference, thus the 25MHz oscillator must be fine tuned in  
order to get the best 32.768kHz accuracy.  
The normal coin cell battery storage capacity is 170 mAh to  
220mAh and the average total RTC circuit current required  
5uA, the battery life will be at least:  
RTC Routing Guidelines  
170,000 µAh / 5 µA = 34,000 hours = 3.88 years  
Single Trace impedance  
Length  
6 inches  
6 inches  
Notes  
X1  
X2  
50 ohm  
50 ohm  
The RTC circuit (PCH) usually consumes 3µA power, thus  
the 32.768kHz clock generator circuit needs be less than  
2µA. The IDT9TCS1083/1085 32.768kHz generator  
averaged operation current is less than 2µA.  
The coin cell battery with IDT 9TCS1083/1085 VBAT power  
pin connection requires a 100 ohm and 22µF ceramic  
capacitor current limitation and noise filtering. The RC  
needs to be added to the battery to limit the current spikes  
effects.  
The VDD_RTC connect to the Intel PCH/ICH chip and the  
9TCS1083/1085 provide seamless power switching  
between main V_3.3 and V_bat.  
V_3.3  
VDD_RTC  
9TCS1083  
Power Switch  
100ohm  
V_bat  
1uf  
10~22uF  
CR2032H  
32.768K Clocks Operation  
The IDT9TCS1083/1085 32.768K clock output operates in  
two modes:  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
23  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Reference Schematic For VBAT and VDD_RTC  
V_3.3  
5V/12V  
To system I2C  
or Int.  
5V/12V  
10K  
VDD_TS  
5V/12V 4-wire  
FAN  
ALERT#  
THERM#  
To system H/W  
or Int.  
VCC  
PWM  
DXN2  
DXP2  
3.3V/5V  
DXP1  
DXN1  
PWM  
TACH  
GND  
10K  
10K  
TACH  
VDD_RTC  
4.7K  
V_3.3  
100 ohm  
To  
Vdd_RTC  
1uf  
V_3.3  
V_bat  
9TCS1083  
VDD_32KB  
VDD_32KB  
32K_A  
V_bat  
(Coin Cell  
battery)  
10uf  
CLK  
VDDIO_25MA  
VDDIO_25MA  
25M_A  
CLK  
CLK  
SMBCLK  
SMBDAT  
To Smbus  
master  
32K_B / 25M_C  
VDD_25MB  
VDD_25MB  
VDD_24M  
CLK  
CLK  
25M_B  
25Mhz crystal  
X1  
VDD_24/48M  
X2  
GND  
24M_48M  
VDD_27/48M  
27M_48M  
VDD_27M  
CLK  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
24  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Frequency Synthesizer – 24/48/27/25 MHz  
IDT9TCS1083/1085 includes a low power PLL to generate  
24/27/48 MHz clock outputs. The PLL uses an external  
25MHz crystal for reference clock input, thus all 25MHz  
clock outputs are through a fanout buffer directly for optimal  
performance. Fine tunning on the external crystal cap load  
is required to get an accurate 25MHz reference clock.  
24/27/48MHz Connection Recommendations  
VDD_24M/27M  
Z=50 ohm  
27 ohm  
5pF  
5pF  
CLK_24/48/  
27M  
25MHz_A Connection Recommendations  
Z=50 ohm  
27 ohm  
VDDIO_25  
Z= 50 ohm  
a. Default 2X push-pull IO drive strength for 24/48/27MHz.  
b. On board 27 ohm series resistor for each path.  
c. Rising/falling slew rate: 0.5v/ns~4v/ns  
0 ohm  
CLK_25A  
4pF  
d. 2 bits (3 steps) I2C for the Slew Rate.  
a. VDDIO_25A range is from 1.05V to 3.3V.  
b. Optimize range is 1.05V to 1.5V.  
c. Pull up strength is 50 ohm@VDDIO_25A=1.5V  
d. Pull down strength is 50 ohm.  
e. No on-board series resistor is required.  
25MHz_B/C Connection Recommendations  
VDDIO_25  
Z= 50 ohm  
0 ohm  
CLK_25B/C  
5pF  
a. VDD_25B/C range is from 1.05V to 3.3V.  
b. Optimized for 3.3V VDDIO.  
c. Pull up strength is 50 ohm@VDD_25B/C=3.3V  
d. Pull down strength is 50 ohm.  
e. No on-board series resistor is required.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
25  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Thermal Sensor  
The thermal sensor in the 9TCS1083 is a low power and highly accurate temperature sensor. It is optimized to operate  
between 60ꢀC to 100ꢀC. There are two external thermal diode connection input temperature sensors. The chip supports  
diode faults and temperature alerts for the thermal sensor; Moreover, the thermal sensor has the capability to go into standby  
mode for power savings.  
The temperature sensor's analog to digital converter (ADC) has 11 bits of resolution. One LSB is equal to 0.125ꢀC. The  
accuracy of the temperature sensor is 1ꢀC between 60ꢀC - 100ꢀC for the two sensors.  
The 9TCS1083 temperature sensor has the ability to cancel the series resistance on the remote diode inputs. Parasitic  
resistances to the DXP and DXN inputs seen in series with the remote diode are caused by PCB trace resistance along with  
the overall length, bulk parasitic resistance in the remote temperature transistor junctions, and series resistance in the CPU.  
This resistance appears as a temperature offset in the thermal sensor measurement and is approximately +0.7ꢀC per Ohm.  
The 9TCS1083 has the ability to cancel up to 100Ω of series resistance.  
Current Driver  
BGP Ref  
Analog MUX  
Channel 1  
Channel 2  
Local  
Channel 1 Temp Reg  
Channel 2 Temp Reg  
NPN 2N3904  
NPN 2N3904  
Temp Sensor  
Dector  
11 bit ADC  
Timing Generator  
The thermal sensor in 9TCS1083 outputs the measured temperature from a beta compensated temperature reading from  
an external diode. The temperature sensor architecture uses an on-chip ADC as shown to convert the analog temperature  
into an 11-bit digital code. Using averaging techniques along with the ADC architecture allows accurate temperature  
measurements. The ability to have programmable conversion rates and adjustable averaging schemes allow the user the  
flexibility to balance accuracy versus conversion speed per the system requirements.  
The temperature measurement relies on the characteristics of a semiconductor junction operating at a fixed current level.  
Forcing a fixed current through the temperature diodes and detecting the changes in VBE, the forward voltage of the diode,  
the temperature proportionality can be determined.  
External Thermal Diode Selection  
The 9TCS1083 supports the following temperature diodes:  
• Typical remote substrate transistor (i.e. CPU substrate PNP intrinsic diode)  
• Discrete PNP transistor diode (i.e. 2N3906)  
• Discrete NPN transistor diode (i.e. 2N3904)  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
26  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
DXP  
DXN  
DXP  
DXP  
PNP  
transistor  
i.e. 2N3906  
NPN  
transister  
i.e. 2N3904  
PNP  
transistor  
i.e. to CPU  
DXN  
DXN  
When the thermal sensor is used in a noisy environment, a capacitor can be connected across DXP and DXN to provide  
some noise filtering capabilities. However, large capacitances affect the accuracy of the temperature measurement. A  
maximum capacitance of 300pF can be used to help mitigate the noise.  
Temperature Sensor Channel Selection  
To enable the temperature sensors, register byte[6], bit[7:6]. Bit[7] is CH1 and bit[6] is CH2.  
Thermal Diode Fault Conditions  
9TCS1083 has the ability to detect an open or a short condition for each temperature sensor diode. An external diode fault  
is defined as one of the following:  
• An open between DXP and DXN  
• A short from VDD to DXP  
• A short from VDD to DXN  
The diode fault monitoring is enabled at the start of every temperature measurement. When an external diode fault is  
detected, the ALERT# pin asserts and the temperature data reads 00h in the MSB and LSB of the corresponding  
temperature registers:  
• DX1 MSB - byte[17], bit[2:0]  
• DX1 LSB - byte[16], bit[7:0]  
• DX2 MSB - byte[19], bit[2:0]  
• DX2 LSB - byte[18], bit[7:0]  
During the fault condition, byte[13], bit[1] or bit[0], will be set depending on the channel that has the fault. Bit[1] corresponds  
to DX1, and Bit[0] corresponds to DX2; furthermore, an open/short fault flag will be set in register byte[14], bit[4].  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
27  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Temperature Threshold ALERT# Pin  
Temperature Threshold Alerts  
The temperature threshold alerts are sent to the ALERT#  
pin. To mask this alert being sent to the ALERT# pin, set  
register byte[12], bit[7:6] to logic 1. Bit[7] is CH1 and bit[6]  
is CH2.  
Through register writes, the high and low temperature limits  
can be set such that it will trigger an alert. This alert can be  
monitored through the registers or can be sent to the  
ALERT# pin. Each channel has its own programmable  
register to set the thresholds as follows:  
Consecutive Alerts  
(1) High Temperature Alert (default 127°C)  
The number of temperature threshold alerts before the  
assertion of the ALERT# pin can be set by the user through  
register byte[6], bit[3:2] as follows:  
Byte[2:0], Bit[7:0]  
Temperature  
Sign Bit  
64ꢀC  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
Byte[6], Bit[3:2]  
Number of Alert Events  
[00] (default)  
[01]  
1
2
3
4
32ꢀC  
16ꢀC  
[10]  
8ꢀC  
[11]  
4ꢀC  
2ꢀC  
Temperature Threshold Alert Alarm Register  
1ꢀC  
The two temperature channels have readable registers,  
byte[13], bit[5:2] that is set when a temperature threshold  
alert has occurred.  
Where byte[0] is the high temperature alert for DX1, byte[1]  
is for DX2.  
Critical Thermal Warnings  
(2) Low Temperature Alert (default 127°C)  
The 9TCS1083 will have register programmable critical  
thermal threshold warnings for all temperature sensor  
channels. Similar to the temperature threshold alerts, the  
critical high temperatures can be set such that a warning  
can be dispatched to the THERM# pin and the readable  
registers. The thermal warnings also have programmable  
hysteresis. Each channel has its own programmable  
register to set the thresholds as follows:  
Byte[5:3], Bit[7:0]  
Temperature  
Sign Bit  
64ꢀC  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
32ꢀC  
16ꢀC  
8ꢀC  
(1) Critical Thermal Warning (default 127°C)  
4ꢀC  
2ꢀC  
Byte[9:7], Bit[6:0]  
Temperature  
64ꢀC  
1ꢀC  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
32ꢀC  
Where byte[3] is the low alert for DX1, byte[4] is for DX2.  
16ꢀC  
Temperature Threshold Alert Status  
8ꢀC  
When a temperature threshold alert is activated, a status  
indicator bit is also set. Register byte[14], bit[6:5] will be set  
depending on the high or low alert. Bit[6] is the high and  
bit[5] is the low alert flag. To clear the alert, register  
byte[15], bit[7] needs to be written with a "1". Writing this bit  
will also clear the critical thermal warnings.  
4ꢀC  
2ꢀC  
1ꢀC  
Where byte[7] is the critical thermal warning for DX1, byte[8]  
is for DX2.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
28  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
(2) Critical Thermal Warning Temperature Hysteresis  
(default 4°C)  
The conversion rate programmable register detail is as  
follows:  
Byte[12], Bit[4:0]  
Bit[4]  
Temperature  
Byte[17], Bit[4:1]  
[0000]  
Conversion Rate  
16/sec *  
8/sec **  
4/sec  
16ꢀC  
8ꢀC  
4ꢀC  
2ꢀC  
1ꢀC  
Bit[3]  
[0001]  
Bit[2] (default)  
Bit[1]  
[0010] (default)  
[0011]  
2/sec  
Bit[0]  
[0100]  
1/sec  
[0101]  
1/2 sec  
Critical Thermal Warning Status  
[0110]  
1/4 sec  
When a critical warning is activated, a status indicator bit is  
also set. Register byte[14], bit[2:1] will be set depending on  
which channel had the critical event. Bit[2] is for channel 1,  
bit[1] is for channel 2.  
[0111]  
1/8 sec  
[1000]  
1/16 sec  
1/32 sec  
1/64 sec  
[1001]  
[1010]  
Critical Thermal Warning THERM# Pin  
The critical thermal warnings are sent to the THERM# pin  
and requires a system register write to byte[15], bit[7] to  
reset. This fault clear I2C write will also clear the  
temperature threshold alerts  
* Valid when only one temperature sensor channel is used.  
** Valid when the number of temperature sensor channel is  
two.  
Active/Standby Mode  
The thermal sensor architecture has dynamic averaging to  
smooth out the temperature conversion readings. To select  
the number of temperature reading averages requires the  
dynamic averaging function to be enabled, register byte[15],  
bit[5]. The number of averages is then selected as follows:  
The thermal sensor has two modes in the temperature  
conversion process:  
(1) Active mode – In this mode the ADC will have a  
selectable conversion rate for the temperature sensing.  
Byte[6], Bit[1:0]  
Average the ADC Temperature  
(2) Standby mode – The system will command via I2C the  
9TCS1083 to sample the temperature sensors. Once the  
temperature reading from the ADC is updated, the  
temperature sensor will be on stand-by awaiting the next  
system request.  
[00]  
[01]  
[10]  
[11]  
1
4
8
16  
Register byte[15], bit[6] controls whether the thermal sensor  
is in active or standby mode.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
29  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Fan Controller  
Fan Controller System Diagram (Schematic  
Example)  
Fan Controller Description  
The fan driver for the 9TCS1083 controls a 4-wire, 12V or  
5V, multiple pole DC fan. The fan controller has three  
modes of operation: (1) direct drive, (2) thermal trigger, and  
(3) Dynamic PWM. All modes have register  
programmability for the user to set the desired fan speed  
and necessary parameters. The controller is also capable  
of detecting stalled fans and upon detection will set the  
appropriate alerts. The 9TCS1083 also has user  
configuration registers to adjust both the ramp-rate and the  
spin-up routine to accommodate different fan start up  
requirements.  
5V/12V  
5V/12V  
5V/12V 4-wire FAN  
10K  
IDT  
MobileAccess  
9TCS1083/85  
VCC  
3.3V/5V  
PWM  
TACH  
GND  
PWM  
10K  
10K  
TACH  
4.7K  
The fan controller uses the input from the user selectable  
external diode connections, DX1 or DX2. The 9TCS1083  
fan controller can be set to run a user specified fan speed.  
In this mode the tachometer signal from the fan will be  
ignored. In thermal trigger mode, the user specifies the  
temperature thresholds, the temperature threshold  
Fan Selection Detail  
The 9TCS1083 fan controller will control 5V - 12V Brushless  
DC fans. The fans need to be 4-wire fans and can have one  
to four poles. The number of fan poles is specified in  
Register byte[24], bit[3:2]. A 2-pole fan is the default.  
hysteresis, and the corresponding fan speed (fan  
Byte[24], Bit[3:2]  
Fan Poles  
tachometer target) for the different temperature zones  
defined by the thresholds. The controller will then run the  
fan at the specified fixed fan speed settings depending on  
the temperature from the sensors. In dynamic PWM mode,  
the fan controller will adjust the PWM duty cycle to maintain  
the system defined fan speed. In this mode, the system  
reads a temperature sensor and the corresponding fan  
speed, tachometer reading. The system will then determine  
and update the 9TCS1083 directly by writing the accessible  
registers byte 32 and byte 33. 9TCS1083 will then adjust the  
PWM to achieve the desired system fan speed.  
[00]  
[01] (default)  
[10]  
1
2
3
4
[11]  
Modes of Operation  
The 9TCS1083 fan controller has three user selectable  
methods to control the fan speed. The default fan speed  
control mode is Dynamic PWM. The modes are selected by  
writing the I2C register byte[24], bit[7:6] as follows:  
The PWM has ten bits of duty cycle resolution with a 25kHz  
frequency. The PWM frequency is selectable between 22,  
25, and 27kHz.  
Fan Controller Modes  
Direct Drive  
Byte[24], Bit[7:6]  
[00]  
[01]  
[10]  
The 9TCS1083 includes hardware programmable  
temperature limits and dedicated system shutdown output  
for thermal protection.  
Thermal Trigger  
Dynamic PWM (default)  
The PWM frequency can be set by writing register byte[24],  
bit[5:4] as follows:  
PWM  
Frequency  
Duty Cycle  
Resolution [# bits]  
Byte[24],  
Bit[5:4]  
25kHz (default)  
22kHz  
10  
11  
9
00  
01  
10  
27kHz  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
30  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Direct Drive Mode  
Temperature Sensor  
In Direct Drive Mode, the fan speed is directly controlled by  
setting a fixed PWM duty cycle. After a proper fan speed  
spin-up, the tachometer signal will be ignored and the  
9TCS1083 will output the fixed programmed PWM duty  
cycle to the fan.  
The temperature can be set to read from the external  
thermal sensors, DX1 or DX2. It is selectable by writing  
Byte[33].  
FAN_CH_SEL - byte[33], bit[1:0]  
To operate in direct drive mode, Register byte[24], bit[7:6] =  
[00].  
Byte[33], bit[1:0]  
Temperature Sensor Selection  
[00]  
[01]  
CH1  
CH2  
The duty cycle is selectable through registers by writing  
byte[26], bit[7:0] and byte[27], bit[7:5] as follows:  
Tachometer Update  
Byte[26], Bit[7:0]  
Logic "1", Selects Duty Cycle  
The tachometer reading can be updated at a rate of  
700msec up to 100msecs. Tachometer Update Time,  
byte[27], bit[4:2]  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
1
1/2  
1/4  
Byte[27], bit[4:2]  
Tachometer Update Time  
100 msec  
1/8  
[000]  
[001]  
1/16  
1/32  
1/64  
1/128  
200 msec  
[010]  
300 msec  
[011] (default)  
[100]  
400 msec  
500 msec  
[101]  
600 msec  
[110]  
700 msec  
Byte[27], Bit[7:5]  
Logic "1", Selects Duty Cycle  
[111]  
800 msec  
Bit[7]  
Bit[6]  
Bit[5]  
1/256  
1/512  
1/1024  
It is important to also set the required fan spin-up specifics  
for proper use. The 9TCS1083 after completion of the fan  
spin-up routine will then put out the correct programmed  
PWM duty cycle.  
Thermal Trigger Mode  
In this mode the 9TCS1083 fan speed controller is  
programmed to run at different fan speeds. The 9TCS1083  
will monitor the fan tachometer and depending on the  
temperature from a thermal sensor diode and the  
pre-programmed temperature settings, the 9TCS1083 will  
adjust the fan speed to the targeted tachometer settings.  
Register byte[24], bit[7:6] = [01] will put 9TCS1083 into  
thermal trigger mode.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
31  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
b. TH_FAN - byte[29], bit[6:0] (default 127ꢀC)  
Example of Thermal Trigger Mode Setup  
The figure below shows how the programmable thresholds  
relate to the fan speed settings.  
Byte[29], Bit[7:0] Logic "1", Selects Temp Threshold  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
—
64ꢀC  
32ꢀC  
16ꢀC  
8ꢀC  
TACH_S2  
TH_FAN  
Thermal Hysteresis  
4ꢀC  
2ꢀC  
TACH_S1  
1ꢀC  
TL_FAN  
Thermal Hysteresis  
To set TL_FAN and TH_FAN a logic "1" is written into the  
proper register. For example, to get 70ꢀC, a "1" would be  
written for Bit[6], Bit[2], and Bit[1].  
FAN OFF  
(2) Temperature Hysteresis, T_HYS, byte[27], bit[1:0]:  
Byte[27], bit[1:0] Temperature Threshold Hysteresis  
From the figure above, it can be seen that the fan speed will  
adjust between the tachometer settings TACH_S1 and  
TACH_S2 given the temperature from the thermal sensor.  
The temperature thresholds are set by TH_FAN and  
TL_FAN along with the temperature hysteresis, T_HYS. In  
this mode, the fan will have active fault condition monitoring  
along with fan spin-up control. The rate at which the fan will  
speed up or slow down, going from one TACH setting to the  
other, can be programmed by the user. Lastly, the fan speed  
tolerance can also be selectable via registers.  
[00]  
[01]  
2ꢀC  
5ꢀC  
[10]  
10ꢀC  
15ꢀC  
[11] (default)  
(3) Tachometer Targets:  
a. TACH_S1 - byte[32], bit[7:0] and byte[33], bit[7:3]  
To set up the fan speed controller in Thermal Trigger Mode,  
the following registers will need to be programmed.  
Byte[32], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
(1) Temperature Thresholds:  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
4096  
2048  
1024  
512  
256  
128  
64  
a. TL_FAN - byte[28], bit[6:0] (default 127ꢀC)  
Byte[28], Bit[7:0] Logic "1", Selects Temp Threshold  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
—
64ꢀC  
32ꢀC  
16ꢀC  
8ꢀC  
32  
4ꢀC  
2ꢀC  
1ꢀC  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
32  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
(4) To Set the minimum and maximum fan speed, use  
the RPM formula, “Formula 1”.  
Byte[33],  
bit[7:3]  
Logic "1" selects Tachometer  
Reading  
a. TACH_MIN - byte[31], bit[7:0]  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
16  
8
Byte[31], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
512  
256  
128  
64  
32  
16  
8
4
2
1
b. TACH_S2 - byte[34], bit[7:0] and byte[35], bit[7:3]  
Byte[34], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
4096  
2048  
1024  
512  
256  
128  
64  
4
b. TACH_MAX - byte[30, bit[7:0]  
Byte[30], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
4096  
2048  
1024  
512  
256  
128  
64  
32  
Byte[35], bit[7:3]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
16  
8
32  
(5) To adjust the rate at which the fan speed will  
transition from one TACH setting to the other, the RPM  
equation, “Formula 1” is again applied to determine the  
incremental or decremental fan speed step size.  
4
2
1
The TACH_S1/S2 is set using the following RPM formula:  
Tachometer PWM Step Control - byte[36], bit[7:0]  
60  
(Formula 1)  
RPM = 2× F  
×
Byte[36], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
sample  
TACH _ Re ading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
128  
64  
32  
16  
8
where: RPM - fan revolution per minute  
- 25kHz sample internal clock sample rate  
TACH_Reading - user programmable registers Byte[32]  
through Byte[35]  
F
sample  
4
2
1
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
33  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Spin-up  
In this mode the fan controller will also have spin-up control  
The system will poll byte[22], bit[7:0], and byte[23], bit[4:0]  
capabilities. At any time the fan attempts to go from a zero  
for the TACH reading which will correlate to the current fan  
RPM to a higher fan speed, the fan will always go through  
speed by the RPM equation, “Formula 1”.  
the proper spin-up routine. The time allotted for fan spin-up  
as well as the spin-up PWM duty cycle can be adjusted via  
registers by writing byte[25], bit[7:3] as follows:  
Byte[22], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
128  
64  
32  
16  
8
Spin-up Time - byte[25], bit[7:6]  
Byte[25], bit[7:6]  
Bit[7:6] = [00]  
Spin-up Time  
250msec  
500msec  
1sec  
Bit[7:6] = [01] (default)  
Bit[7:6] = [10]  
4
Bit[7:6] = [11]  
2sec  
2
Spin-up PWM duty cycle - byte[25], bit[5:3]  
1
Byte[25], bit[5:3]  
Bit[5:3] = [000]  
Spin-up PWM duty cycle  
30%  
35%  
40%  
45%  
50%  
55%  
60%  
65%  
Byte[23], bit[4:0]  
Logic "1" selects Tachometer  
Reading  
Bit[5:3] = [001]  
Bit[5:3] = [010]  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
4096  
2048  
1024  
512  
Bit[5:3] = [011]  
Bit[5:3] = [100]  
Bit[5:3] = [101]  
Bit[5:3] = [110] (default)  
Bit[5:3] = [111]  
256  
The system can read the temperature sensor diodes from  
the 9TCS1083 or from any sensor available to the system to  
determine the necessary adjustments to the fan speed.  
Dynamic PWM Mode  
The 9TCS1083 in this mode will be directed by the system  
via registers as to the target RPM by which the fan speed  
should be running. The system will read a temperature  
sensor along with the fan tachometer information and make  
the determination as to what the nominal fan speed should  
be. This information is fed back to the 9TCS1083 via  
register writes. 9TCS1083 will comply and attempt to run  
the fan at the requested speed.  
To put the 9TCS1083 in Dynamic PWM mode register  
byte[24], bit[7:6] = [10]  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
9TCS1083 REV 0.8 011612  
34  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
b. TACH_MAX - byte[30, bit[7:0]  
System Direct Tachometer Control  
The system will directly write to register byte[32], bit[7:0] and  
byte[33], bit[7:3] a desired TACH setting.  
Byte[30], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
4096  
2048  
1024  
512  
256  
128  
64  
Byte[32], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
4096  
2048  
1024  
512  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
256  
128  
32  
64  
Fan Fault Conditions  
32  
The fan fault conditions will be activated and reported if the  
minimum or maximum fan speed is detected. During a  
FAULT1, maximum fan speed, 9TCS1083 will stop the fan  
and then wait for the FAULT1 flag to be cleared. For a  
FAULT2 condition, stalled fan, 9TCS1083 will go through the  
spin-up procedure to try to start the fan. The number of  
attempts to try to restart the fan is programmable. The fan  
fault conditions are reported via register on byte[37], bit[1;0].  
Byte[33], bit[7:3]  
Logic "1" selects Tachometer  
Reading  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
16  
8
4
Fan Fault Conditions  
2
1
Byte[37], bit[1:0]  
Logic "1" = FAULT CONDITION  
Fault1 - Fan speed too fast  
Bit[1]  
Bit[0]  
The tachometer setting is related to the fan speed by the  
RPM equation, “Formula 1”.  
Fault2 - Fan speed too slow  
The number of times for spin-up retries:  
Setting Minimum and Maximum Tachometer  
RPM  
Byte[25], bit[2:1]  
Number of Spin-up Attempts  
The minimum and maximum tachometer settings can be set  
for the fan faults.  
[00]  
[01] (default)  
[10]  
3
4
5
6
a. TACH_MIN - byte[31], bit[7:0]  
Byte[31], bit[7:0]  
Logic "1" selects Tachometer  
Reading  
[11]  
Bit[7]  
Bit[6]  
Bit[5]  
Bit[4]  
Bit[3]  
Bit[2]  
Bit[1]  
Bit[0]  
512  
256  
128  
64  
32  
16  
8
4
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
35  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Spin-up Details  
100% *  
30%~65%  
Step  
Step  
¼ of  
spin up  
time  
Step  
Target count  
Update Update Update  
Time Time Time  
Target count reached  
Spin Up Time  
1. The spin-up time can be specified in register byte[25],  
bit[7:6].  
Fan Controller Temperature Diode Sensor  
Spin-up Time - byte[25], bit[7:6]  
The fan controller can use either one of the two channels for  
temperature sensing. To specify which temperature sensor  
is used for the fan controller, register byte[33], bit[1:0].  
Byte[25], bit[7:6]  
Bit[7:6] = [00]  
Spin-up Time  
250msec  
500msec  
1sec  
Bit[7:6] = [01] (default)  
Bit[7:6] = [10]  
Bit[7:6] = [11]  
2sec  
2. During spin-up, the PWM duty cycle can be set to 100%  
for one quarter of the total spin-up time by register byte[25],  
bit[0].  
3. The next three quarters of the spin-up time, the PWM duty  
cycle is set by register[25], bit[5:3].  
Spin-up PWM duty cycle - byte[25], bit[5:3]  
Byte[25], bit[5:3]  
Bit[5:3] = [000]  
Spin-up PWM duty cycle  
30%  
35%  
40%  
45%  
50%  
55%  
60%  
65%  
Bit[5:3] = [001]  
Bit[5:3] = [010]  
Bit[5:3] = [011]  
Bit[5:3] = [100]  
Bit[5:3] = [101]  
Bit[5:3] = [110] (default)  
Bit[5:3] = [111]  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
9TCS1083 REV 0.8 011612  
36  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Marking Diagram (NLG32)  
IDT  
9TCS1083B  
$$$  
YYWW  
######  
Notes:  
1. “######” is the lot number.  
2. YYWW is the last two digits of the year and week that the part was assembled.  
3. “$$$” is the assembly mark code..  
4. “B” at the end of the part number is the device revision desigantor; does not correlate with the datasheet revision.  
5. Bottom marking: country of origin if not USA.  
Thermal Characteristics 32-pin VFQFPN  
Parameter  
Symbol  
Conditions  
Min.  
Typ. Max. Units  
Thermal Resistance Junction to  
Ambient  
θ
Still air  
34  
29  
27  
32  
° C/W  
° C/W  
° C/W  
° C/W  
JA  
θ
1 m/s air flow  
3 m/s air flow  
JA  
θ
JA  
Thermal Resistance Junction to Case  
θ
JC  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
37  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Package Outline and Package Dimensions (32-pin VFQFPN, 0.50mm pitch)  
Package dimensions are kept current with JEDEC Publication No. 95  
Ordering Information  
Part / Order Number  
9TCS1083BNLG  
Marking  
see page 37  
Shipping Packaging  
Trays  
Package  
32-pin VFQFPN  
32-pin VFQFPN  
Temperature  
0 to +70° C  
0 to +70° C  
9TCS1083BNLG8  
Tape and Reel  
“G” after the two-letter package code are the Pb-Free configuration and are RoHS compliant.  
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes  
no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No  
other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications  
such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not  
recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT  
does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.  
IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
38  
9TCS1083 REV 0.8 011612  
9TCS1083  
MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES  
Innovate with IDT and accelerate your future networks. Contact:  
www.IDT.com  
For Sales  
800-345-7015  
408-284-8200  
Fax: 408-284-2775  
For Tech Support  
www.idt.com/go/clockhelp  
Corporate Headquarters  
Integrated Device Technology, Inc.  
www.idt.com  
© 2010 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device  
Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered  
trademarks used to identify products or services of their respective owners.  
Printed in USA  
厂商 型号 描述 页数 下载

IDT

 		9TCS1082BNLG [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 27 页

IDT

 		9TCS1082BNLG8 [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 27 页

IDT

 		9TCS1083BNLG8 [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 39 页

IDT

 		9TCS1083NLGI [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 39 页

IDT

 		9TCS1083NLGI8 [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 39 页

IDT

 		9TCS1085NLGI [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 39 页

IDT

 		9TCS1085NLGI8 [ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ] 39 页

购物指南

支付方式

配送服务

售后服务

发票须知

优惠券使用规则

特色服务

PCBA制造

国产品牌推荐

国产料号替代

质量保证

技术资料

行业资讯

关于我们

关于壹壹捌

联系我们

联系我们

服务热线：400-618-9990

企业邮箱：sales@ic118.com

服务时间：周一至周六 8:30-17:30

壹壹捌官方微信号

PDF索引：

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

0

1

2

3

4

5

6

7

8

9

IC型号索引：

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

0

1

2

3

4

5

6

7

8

9

Copyright 2024 gkzhan.com Al Rights Reserved 京ICP备06008810号-21 京

深圳网络警察报警平台
公共信息安全网络监察
经营性网站备案信息
不良信息举报中心
工商网监电子标识
全国公安机关备案
0.220665s