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9ZX21201AKLFT

型号：

9ZX21201AKLFT

描述：

12 ，输出差分Z缓冲的第二代PCIe / 3和QPI[ 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI ]

品牌：

IDT[ INTEGRATED DEVICE TECHNOLOGY ]

页数：

16 页

PDF大小：

222 K

下载PDF手册
DATASHEET  
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI  
9ZX21201  
General Description  
Features/Benefits  
The IDT9ZX21201 is a 12-output DB1200Z suitable for PCI-Express  
Gen3 or QPI applications. The part is backwards compatible to  
PCIe Gen1 and Gen2. A fixed external feedback maintains low drift  
for critical QPI applications. In bypass mode, the IDT9ZX21201 can  
provide outputs up to 150MHz.  
•
•
•
Space-saving 64-pin packages  
Fixed feedback path/ 0ps input-to-output delay  
9 Selectable SMBus Addresses/Mulitple devices can share  
the same SMBus Segment  
•
•
•
12 OE# pins/Hardware control of each output  
PLL or bypass mode/PLL can dejitter incoming clock  
100MHz or 133MHz PLL mode operation/supports PCIe  
and QPI applications  
Recommended Application  
12-output PCIe Gen3/ QPI differential buffer for Romley and newer  
platforms  
•
•
Selectable PLL bandwidth/minimizes jitter peaking in  
downstream PLL's  
Key Specifications  
•
•
•
•
•
Cycle-to-cycle jitter <50ps  
Output-to-output skew < 65 ps  
Input-to-output delay variation <50ps  
PCIe Gen3 phase jitter < 1.0ps RMS  
QPI 9.6GT/s 12UI phase jitter < 0.2ps RMS  
Spread Spectrum Compatible/tracks spreading input clock  
for low EMI  
Software control of PLL Bandwidth and Bypass Settings/  
PLL can dejitter incoming clock (B Rev only)  
•
Output Features  
•
12 - 0.7V differential HCSL output pairs  
Functional Block Diagram  
OE(11:0)#  
DFB_OUT  
Z-PLL  
(SS Compatible)  
DIF(11:0)  
DIF_IN  
DIF_IN#  
HIBW_BYPM_LOBW#  
100M_133M#  
CKPWRGD/PD#  
SMB_A0_tri  
SMB_A1_tri  
Logic  
SMBDAT  
SMBCLK  
IREF  
Note: Even though the feedback is fixed, DFB_OUT still needs a  
termination network for the part to function.  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B - 12/08/11  
1
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Pin Configuration  
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49  
VDDA  
GNDA  
IREF  
GND  
1
2
3
4
5
6
7
8
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
DIF_7#  
DIF_7  
vOE7#  
vOE6#  
DIF_6#  
DIF_6  
GND  
100M_133M#  
HIBW_BYPM_LOBW#  
CKPWRGD_PD#  
GND  
VDDR  
DIF_IN  
DIF_IN#  
SMB_A0_tri  
SMBDAT  
9ZX21201  
VDD  
9
DIF_5#  
DIF_5  
vOE5#  
vOE4#  
DIF_4#  
DIF_4  
GND  
10  
11  
12  
13  
14  
15  
16  
SMBCLK  
SMB_A1_tri  
DFB_OUT#  
DFB_OUT  
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32  
Notes: Pins with ^ prefix have internal ~100K pullup  
Pins with v prefix have internal ~100K pulldown.  
Tri-level Input Thresholds  
MLF Power Connections  
Pin Number  
Level  
Low  
Voltage  
<0.8V  
Description  
Mid  
High  
1.2<Vin<1.8V  
Vin > 2.2V  
VDD  
1
VDD  
GND  
2
Analog PLL  
Analog Input  
Functionality at Power Up (PLL Mode)  
8
7
DIF_IN  
(MHz)  
100.00  
133.33  
100M_133M#  
DIF  
23,33,41,48,  
58  
25,40,56 24,32,49,57  
DIF clocks  
1
0
DIF_IN  
DIF_IN  
9ZX21201 SMBus Addressing  
Pin  
SMBus Address  
(Rd/Wrt bit = 0)  
PLL Operating Mode Readback Table  
SMB_A1_tri SMB_A0_tri  
HiBW_BypM_LoBW#  
Low (Low BW)  
Byte0, bit 7  
Byte 0, bit 6  
0
D8  
0
M
1
0
M
1
0
M
1
0
0
1
0
1
1
0
0
M
M
DA  
Mid (Bypass)  
High (High BW)  
DE  
C2  
C4  
PLL Operating Mode  
HiBW_BypM_LoBW#  
MODE  
PLL Lo BW  
Bypass  
M
1
1
C6  
CA  
CC  
CE  
Low  
Mid  
1
High  
PLL Hi BW  
NOTE: PLL is OFF in Bypass Mode  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
2
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Pin Description  
PIN #  
PIN NAME  
TYPE  
DESCRIPTION  
1
2
VDDA  
GNDA  
PWR 3.3V power for the PLL core.  
PWR Ground pin for the PLL core.  
This pin establishes the reference for the differential current-mode output pairs. It requires a fixed precision  
OUT resistor to ground. 475ohm is the standard value for 100ohm differential impedance. Other impedances require  
different values. See data sheet.  
3
IREF  
3.3V Input to select operating frequency  
See Functionality Table for Definition  
Trilevel input to select High BW, Bypass or Low BW mode.  
See PLL Operating Mode Table for Details.  
4
5
100M_133M#  
IN  
HIBW_BYPM_LOBW#  
IN  
Notifies device to sample latched inputs and start up on first high assertion, or exit Power Down Mode on  
subsequent assertions. Low enters Power Down Mode.  
PWR Ground pin.  
6
7
8
CKPWRGD_PD#  
GND  
IN  
3.3V power for differential input clock (receiver). This VDD should be treated as an analog power rail and  
filtered appropriately.  
VDDR  
PWR  
9
10  
DIF_IN  
DIF_IN#  
IN  
IN  
0.7 V Differential TRUE input  
0.7 V Differential Complementary Input  
SMBus address bit. This is a tri-level input that works in conjunction with the SMB_A1 to decode 1 of 9 SMBus  
Addresses.  
11  
SMB_A0_tri  
IN  
12  
13  
SMBDAT  
SMBCLK  
I/O  
IN  
Data pin of SMBUS circuitry, 5V tolerant  
Clock pin of SMBUS circuitry, 5V tolerant  
SMBus address bit. This is a tri-level input that works in conjunction with the SMB_A0 to decode 1 of 9 SMBus  
Addresses.  
Complementary half of differential feedback output, provides feedback signal to the PLL for synchronization  
with input clock to eliminate phase error.  
True half of differential feedback output, provides feedback signal to the PLL for synchronization with the input  
clock to eliminate phase error.  
14  
15  
16  
SMB_A1_tri  
DFB_OUT#  
DFB_OUT  
IN  
OUT  
OUT  
17  
18  
DIF_0  
DIF_0#  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
Active low input for enabling DIF pair 0.  
1 =disable outputs, 0 = enable outputs  
Active low input for enabling DIF pair 1.  
1 =disable outputs, 0 = enable outputs  
19  
20  
vOE0#  
vOE1#  
IN  
IN  
21  
22  
23  
24  
25  
26  
27  
DIF_1  
DIF_1#  
GND  
VDD  
VDD  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
PWR Ground pin.  
PWR Power supply, nominal 3.3V  
PWR Power supply, nominal 3.3V  
DIF_2  
DIF_2#  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
Active low input for enabling DIF pair 2.  
1 =disable outputs, 0 = enable outputs  
Active low input for enabling DIF pair 3.  
1 =disable outputs, 0 = enable outputs  
28  
29  
vOE2#  
vOE3#  
IN  
IN  
30  
31  
32  
DIF_3  
DIF_3#  
VDD  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
PWR Power supply, nominal 3.3V  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
3
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Pin Description (continued)  
33  
34  
35  
GND  
DIF_4  
DIF_4#  
PWR Ground pin.  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
Active low input for enabling DIF pair 4  
1 =disable outputs, 0 = enable outputs  
Active low input for enabling DIF pair 5. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
36  
37  
vOE4#  
vOE5#  
IN  
IN  
38  
39  
40  
41  
42  
43  
DIF_5  
DIF_5#  
VDD  
GND  
DIF_6  
DIF_6#  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
PWR Power supply, nominal 3.3V  
PWR Ground pin.  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
Active low input for enabling DIF pair 6. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
Active low input for enabling DIF pair 7. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
44  
45  
vOE6#  
vOE7#  
IN  
IN  
46  
47  
48  
49  
50  
51  
DIF_7  
DIF_7#  
GND  
VDD  
DIF_8  
DIF_8#  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
PWR Ground pin.  
PWR Power supply, nominal 3.3V  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
Active low input for enabling DIF pair 8. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
Active low input for enabling DIF pair 9. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
52  
53  
vOE8#  
vOE9#  
IN  
IN  
54  
55  
56  
57  
58  
59  
60  
DIF_9  
DIF_9#  
VDD  
VDD  
GND  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
PWR Power supply, nominal 3.3V  
PWR Power supply, nominal 3.3V  
PWR Ground pin.  
DIF_10  
DIF_10#  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
Active low input for enabling DIF pair 10. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
Active low input for enabling DIF pair 11. This pin has an internal pull-down  
1 =disable outputs, 0 = enable outputs  
61  
62  
vOE10#  
vOE11#  
IN  
IN  
63  
64  
DIF_11  
DIF_11#  
OUT 0.7V differential true clock output  
OUT 0.7V differential Complementary clock output  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
4
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Electrical Characteristics - Absolute Maximum Ratings  
PARAMETER  
SYMBOL  
CONDITIONS  
UNITS NOTES  
MIN  
TYP  
MAX  
4.6  
3.3V Core Supply Voltage VDD, VDDA  
VDD for core logic and PLL  
V
V
V
V
1,2  
1
Input Low Voltage  
Input High Voltage  
Input High Voltage  
VIL  
VIH  
GND-0.5  
Except for SMBus interface  
SMBus clock and data pins  
VDD+0.5V  
5.5V  
1
VIHSMB  
1
°C  
°C  
V
1
1
1
Storage Temperature  
Junction Temperature  
Input ESD protection  
Ts  
Tj  
ESD prot  
-65  
150  
125  
Human Body Model  
2000  
1Guaranteed by design and characterization, not 100% tested in production.  
2 Operation under these conditions is neither implied nor guaranteed.  
Electrical Characteristics - Input/Supply/Common Parameters  
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
0
TYP  
MAX  
70  
UNITS NOTES  
Ambient Operating  
Temperature  
TCOM  
Commmercial range  
°C  
V
1
1
Single-ended inputs, except SMBus, low  
threshold and tri-level inputs  
Single-ended inputs, except SMBus, low  
threshold and tri-level inputs  
Input High Voltage  
Input Low Voltage  
VIH  
2
V
DD + 0.3  
VIL  
IIN  
GND - 0.3  
-5  
0.8  
5
V
1
1
Single-ended inputs, VIN = GND, VIN = VDD  
uA  
Single-ended inputs  
IN = 0 V; Inputs with internal pull-up resistors  
Input Current  
V
IINP  
-200  
200  
uA  
1
VIN = VDD; Inputs with internal pull-down resistors  
Fibyp  
Fipll  
VDD = 3.3 V, Bypass mode  
VDD = 3.3 V, 100MHz PLL mode  
VDD = 3.3 V, 133.33MHz PLL mode  
33  
90  
150  
110  
147  
7
MHz  
MHz  
MHz  
nH  
2
2
Input Frequency  
Pin Inductance  
Capacitance  
100.00  
133.33  
Fipll  
120  
2
Lpin  
1
CIN  
Logic Inputs, except DIF_IN  
DIF_IN differential clock inputs  
1.5  
1.5  
5
pF  
1
CINDIF_IN  
2.7  
pF  
1,4  
COUT  
Output pin capacitance  
6
pF  
1
From VDD Power-Up and after input clock  
stabilization or de-assertion of PD# to 1st clock  
Allowable Frequency  
Clk Stabilization  
TSTAB  
0.300  
1
ms  
1,2  
Input SS Modulation  
Frequency  
fMODIN  
tLATOE#  
tDRVPD  
30  
4
33  
12  
kHz  
clocks  
us  
1
1
(Triangular Modulation)  
DIF start after OE# assertion  
DIF stop after OE# deassertion  
DIF output enable after  
OE# Latency  
Tdrive_PD#  
6
16  
300  
1,3  
PD# de-assertion  
Tfall  
tF  
Fall time of control inputs  
10  
10  
ns  
ns  
V
1,2  
1,2  
1
Trise  
tR  
Rise time of control inputs  
SMBus Input Low Voltage  
SMBus Input High Voltage  
SMBus Output Low Voltage  
SMBus Sink Current  
Nominal Bus Voltage  
SCLK/SDATA Rise Time  
VILSMB  
VIHSMB  
VOLSMB  
IPULLUP  
VDDSMB  
tRSMB  
tFSMB  
0.8  
2.1  
VDDSMB  
0.4  
V
1
@ IPULLUP  
@ VOL  
V
1
4
mA  
V
1
3V to 5V +/- 10%  
2.7  
5.5  
1000  
300  
1
(Max VIL - 0.15) to (Min VIH + 0.15)  
(Min VIH + 0.15) to (Max VIL - 0.15)  
ns  
ns  
1
SCLK/SDATA Fall Time  
SMBus Operating  
Frequency  
1
fMAXSMB  
Maximum SMBus operating frequency  
100  
kHz  
1,5  
1Guaranteed by design and characterization, not 100% tested in production.  
2Control input must be monotonic from 20% to 80% of input swing.  
3Time from deassertion until outputs are >200 mV  
4DIF_IN input  
5The differential input clock must be running for the SMBus to be active  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
5
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Electrical Characteristics - Clock Input Parameters  
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%  
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
600  
TYP  
800  
MAX  
1150  
UNITS NOTES  
Differential inputs  
(single-ended measurement)  
Differential inputs  
Input High Voltage - DIF_IN  
VIHDIF  
mV  
mV  
mV  
1
1
1
Input Low Voltage - DIF_IN  
VILDIF  
VCOM  
V
SS - 300  
300  
0
300  
(single-ended measurement)  
Input Common Mode  
Voltage - DIF_IN  
Common Mode Input Voltage  
1000  
Input Amplitude - DIF_IN  
Input Slew Rate - DIF_IN  
Input Leakage Current  
VSWING  
dv/dt  
IIN  
Peak to Peak value  
Measured differentially  
VIN = VDD , VIN = GND  
300  
0.4  
-5  
1450  
8
5
mV  
V/ns  
uA  
1
1,2  
1
Input Duty Cycle  
dtin  
Measurement from differential wavefrom  
Differential Measurement  
45  
0
55  
125  
%
1
Input Jitter - Cycle to Cycle  
JDIFIn  
ps  
1
1 Guaranteed by design and characterization, not 100% tested in production.  
2Slew rate measured through +/-75mV window centered around differential zero  
Electrical Characteristics - DIF 0.7V Current Mode Differential Outputs  
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%  
PARAMETER  
SYMBOL  
Trf  
CONDITIONS  
MIN  
TYP MAX UNITS NOTES  
V/ns  
%
Slew rate  
Slew rate matching  
Scope averaging on  
Slew rate matching, Scope averaging on  
1
2
8
4
20  
1, 2, 3  
1, 2, 4  
Δ
Trf  
Statistical measurement on single-ended signal  
using oscilloscope math function. (Scope  
averaging on)  
Voltage High  
Voltage Low  
VHigh  
VLow  
660  
705  
1
850  
1
1
mV  
-150  
150  
Max Voltage  
Min Voltage  
Vswing  
Crossing Voltage (abs)  
Crossing Voltage (var)  
Vmax  
Vmin  
Vswing  
Measurement on single ended signal using  
absolute value. (Scope averaging off)  
Scope averaging off  
725  
-22  
1407  
309  
22  
1150  
1
1
1, 2  
1, 5  
1, 6  
mV  
-300  
300  
250  
mV  
mV  
mV  
Vcross_abs  
Scope averaging off  
Scope averaging off  
550  
140  
Δ
-Vcross  
1
Ω
Guaranteed by design and characterization, not 100% tested in production. IREF = VDD/(3xRR). For RR = 412 (1%), IREF = 2.7mA.  
Ω
OH = 6.4 x IREF and VOH = 0.7V @ ZO=85 differential impedance.  
I
2 Measured from differential waveform  
3 Slew rate is measured through the Vswing voltage range centered around differential 0V. This results in a +/-150mV window around  
differential 0V.  
4 Matching applies to rising edge rate of Clock / falling edge rate of Clock#. It is measured in a +/-75mV window centered on the  
average cross point where Clock rising meets Clock# falling. The median cross point is used to calculate the voltage thresholds the  
oscilloscope uses for the edge rate calculations.  
5 Vcross is defined as voltage where Clock = Clock# measured on a component test board and only applies to the differential rising  
edge (i.e. Clock rising and Clock# falling).  
6 The total variation of all Vcross measurements in any particular system. Note that this is a subset of V_cross_min/max (V_cross  
absolute) allowed. The intent is to limit Vcross induced modulation by setting V_cross_delta to be smaller than V_cross absolute.  
Electrical Characteristics - Current Consumption  
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%  
PARAMETER  
SYMBOL  
IDDVDD  
CONDITIONS  
133MHz, CL = Full load; VDD rail, Zo=85  
133MHz, CL = Full load; VDD rail, Zo=85  
MIN  
TYP  
260  
MAX  
275  
20  
UNITS NOTES  
Ω
Ω
mA  
mA  
mA  
mA  
1
1
1
1
Operating Current  
13  
2
IDDVDDA  
Ω
IDDVDDPD  
IDDVDDAPD  
Power Down, VDD rail, Zo=85  
Power Down, VDD rail, Zo=85  
6
Powerdown Current  
Ω
1.3  
2
1Guaranteed by design and characterization, not 100% tested in production.  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
6
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Electrical Characteristics - Skew and Differential Jitter Parameters  
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%  
PARAMETER  
SYMBOL  
CONDITIONS  
Input-to-Output Skew in PLL mode  
nominal value @ 25°C, 3.3V  
MIN  
-100  
TYP  
29  
MAX  
100  
UNITS NOTES  
CLK_IN, DIF[x:0]  
tSPO_PLL  
ps  
ns  
ps  
1,2,4,5,8  
1,2,3,5,8  
1,2,3,5,8  
Input-to-Output Skew in Bypass mode  
nominal value @ 25°C, 3.3V  
Input-to-Output Skew Varation in PLL mode  
across voltage and temperature  
CLK_IN, DIF[x:0]  
CLK_IN, DIF[x:0]  
tPD_BYP  
2.5  
-50  
3.7  
4.5  
50  
tDSPO_PLL  
Input-to-Output Skew Varation in Bypass mode  
across voltage and temperature  
CLK_IN, DIF[x:0]  
CLK_IN, DIF[x:0]  
CLK_IN, DIF[x:0]  
DIF{x:0]  
tDSPO_BYP  
-250  
250  
5
ps  
1,2,3,5,8  
1,2,3,5,8  
1,2,3,5,8  
1,2,3,8  
Random Differential Tracking error beween two  
9ZX devices in Hi BW Mode  
ps  
(rms)  
tDTE  
2.9  
14  
32  
Random Differential Spread Spectrum Tracking  
error beween two 9ZX devices in Hi BW Mode  
tDSSTE  
75  
65  
ps  
Output-to-Output Skew across all outputs  
(Common to Bypass and PLL mode)  
LOBW#_BYPASS_HIBW = 1  
tSKEW_ALL  
ps  
PLL Jitter Peaking  
PLL Jitter Peaking  
PLL Bandwidth  
PLL Bandwidth  
Duty Cycle  
jpeak-hibw  
jpeak-lobw  
pllHIBW  
pllLOBW  
tDC  
0
0
1.8  
0.7  
2.5  
2
dB  
dB  
7,8  
7,8  
8,9  
8,9  
1
LOBW#_BYPASS_HIBW = 0  
LOBW#_BYPASS_HIBW = 1  
LOBW#_BYPASS_HIBW = 0  
2
3.1  
4
MHz  
MHz  
%
0.7  
45  
1.1  
1.4  
55  
Measured differentially, PLL Mode  
Measured differentially, Bypass Mode  
@100MHz  
49.6  
Duty Cycle Distortion  
Jitter, Cycle to cycle  
tDCD  
-2  
-0.2  
2
%
1,10  
PLL mode  
Additive Jitter in Bypass Mode  
15.7  
0.1  
50  
50  
ps  
ps  
1,11  
1,11  
tjcyc-cyc  
Notes for preceding table:  
1
Measured into fixed 2 pF load cap. Input to output skew is measured at the first output edge following the corresponding input.  
2
3
Measured from differential cross-point to differential cross-point. This parameter can be tuned with external feedback path, if present.  
All Bypass Mode Input-to-Output specs refer to the timing between an input edge and the specific output edge created by it.  
4 This parameter is deterministic for a given device  
5
Measured with scope averaging on to find mean value.  
6.t is the period of the input clock  
7 Measured as maximum pass band gain. At frequencies within the loop BW, highest point of magnification is called PLL jitter peaking.  
8.  
Guaranteed by design and characterization, not 100% tested in production.  
9
Measured at 3 db down or half power point.  
10 Duty cycle distortion is the difference in duty cycle between the output and the input clock when the device is operated in bypass mode.  
11 Measured from differential waveform  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
7
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Electrical Characteristics - Phase Jitter Parameters  
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%  
PARAMETER  
SYMBOL  
tjphPCIeG1  
CONDITIONS  
PCIe Gen 1  
PCIe Gen 2 Lo Band  
10kHz < f < 1.5MHz  
MIN  
TYP  
32  
MAX  
86  
UNITS  
ps (p-p)  
ps  
(rms)  
ps  
(rms)  
ps  
(rms)  
ps  
(rms)  
ps  
(rms)  
ps  
Notes  
1,2,3  
0.8  
1.9  
3
3.1  
1
1,2  
1,2  
tjphPCIeG2  
PCIe Gen 2 High Band  
1.5MHz < f < Nyquist (50MHz)  
PCIe Gen 3  
tjphPCIeG3  
0.45  
0.20  
0.14  
1,2,4  
1,5  
Phase Jitter, PLL Mode  
(PLL BW of 2-4MHz, CDR = 10MHz)  
QPI & SMI  
(100MHz or 133MHz, 4.8Gb/s, 6.4Gb/s 12UI)  
QPI & SMI  
0.5  
0.3  
tjphQPI_SMI  
1,5  
(100MHz, 8.0Gb/s, 12UI)  
QPI & SMI  
(100MHz, 9.6Gb/s, 12UI)  
0.12  
0.10  
0.13  
0.2  
10  
1,5  
(rms)  
tjphPCIeG1  
PCIe Gen 1  
PCIe Gen 2 Lo Band  
10kHz < f < 1.5MHz  
ps (p-p)  
ps  
(rms)  
ps  
(rms)  
ps  
(rms)  
ps  
(rms)  
ps  
(rms)  
ps  
1,2,3  
1,2,6  
0.3  
tjphPCIeG2  
PCIe Gen 2 High Band  
1.5MHz < f < Nyquist (50MHz)  
PCIe Gen 3  
0.10  
0.10  
0.09  
0.09  
0.09  
0.7  
1,2,6  
1,2,4,6  
1,5,6  
AdditivePhase Jitter,  
0.3  
tjphPCIeG3  
(PLL BW of 2-4MHz, CDR = 10MHz)  
QPI & SMI  
(100MHz or 133MHz, 4.8Gb/s, 6.4Gb/s 12UI)  
QPI & SMI  
Bypass mode  
0.3  
0.1  
0.1  
tjphQPI_SMI  
1,5,6  
(100MHz, 8.0Gb/s, 12UI)  
QPI & SMI  
(100MHz, 9.6Gb/s, 12UI)  
1,5,6  
(rms)  
1 Applies to all outputs.  
2 See http://www.pcisig.com for complete specs  
3 Sample size of at least 100K cycles. This figures extrapolates to 108ps pk-pk @ 1M cycles for a BER of 1-12.  
4 Subject to final radification by PCI SIG.  
5 Calculated from Intel-supplied Clock Jitter Tool v 1.6.4  
6 For RMS figures, additive jitter is calculated by solving the following equation: (Additive jitter)^2 = (total jittter)^2 - (input jitter)^2  
Power Management Table  
Inputs  
Control Bits/Pins  
DIF(11:0)/  
Outputs  
DFB_OUT/  
DFB_OUT#  
Hi-Z1  
Running  
Running  
Running  
DIF_IN/  
DIF_IN#  
SMBus  
EN bit  
PLL State  
OE# Pin  
DIF(11:0)#  
CKPWRGD•/PD#  
Hi-Z1  
Hi-Z1  
Running  
Hi-Z1  
0
1
X
X
0
1
1
X
X
0
OFF  
ON  
ON  
ON  
Running  
1
NOTE:  
1. Due to external pull down resistors, HI-Z results in Low/Low on the True/Complement outputs  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
8
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Clock Periods - Differential Outputs with Spread Spectrum Disabled  
Measurement Window  
1 Clock  
1us  
-SSC  
0.1s  
- ppm  
0.1s  
0.1s  
+ ppm  
Long-Term  
Average  
Max  
1us  
+SSC  
Short-Term  
Average  
Max  
1 Clock  
Center  
Freq.  
MHz  
SSC OFF  
-c2c jitter  
AbsPer  
Min  
0 ppm  
Period  
Nominal  
+c2c jitter Units Notes  
AbsPer  
Max  
Short-Term Long-Term  
Average  
Min  
Average  
Min  
100.00  
133.33  
9.94900  
7.44925  
9.99900  
7.49925  
10.00000  
7.50000  
10.00100  
7.50075  
10.05100  
7.55075  
ns  
ns  
1,2,3  
1,2,4  
DIF  
Clock Periods - Differential Outputs with Spread Spectrum Enabled  
Measurement Window  
1 Clock  
1us  
-SSC  
0.1s  
- ppm  
0.1s  
0.1s  
+ ppm  
Long-Term  
Average  
Max  
1us  
+SSC  
Short-Term  
Average  
Max  
1 Clock  
Center  
Freq.  
MHz  
SSC ON  
-c2c jitter  
AbsPer  
Min  
0 ppm  
Period  
Nominal  
+c2c jitter Units Notes  
AbsPer  
Max  
Short-Term Long-Term  
Average  
Min  
Average  
Min  
99.75  
133.00  
9.94906  
7.44930  
9.99906  
7.49930  
10.02406  
7.51805  
10.02506  
7.51880  
10.02607  
7.51955  
10.05107  
7.53830  
10.10107  
7.58830  
ns  
ns  
1,2,3  
1,2,4  
DIF  
Notes:  
1Guaranteed by design and characterization, not 100% tested in production.  
2 All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK420BQ/CK410B+  
accuracy requirements (+/-100ppm). The 9ZX21201 itself does not contribute to ppm error.  
3
Driven by SRC output of main clock, 100 MHz PLL Mode or Bypass mode  
4
Driven by CPU output of main clock, 133 MHz PLL Mode or Bypass mode  
Differential Output Terminations  
Ω
Ω Ω Ω  
Iref ( ) Rs ( ) Rp ( )  
DIF Zo ( )  
100  
85  
475  
412  
33  
27  
50  
43.2  
9ZX21201 Differential Test Loads  
Rs  
DIF Zo=85ohms,10"  
2pF  
2pF  
Rp  
Rp  
Rs  
HCSL Output  
Buffer  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
9
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
General SMBus serial interface information for the 9ZX21201  
How to Write:  
How to Read:  
• Controller (host) will send start bit.  
• Controller (host) sends the write address XX(H)  
• IDT clock will acknowledge  
• Controller (host) sends a start bit.  
• Controller (host) sends the write address XX(H)  
• IDT clock will acknowledge  
• Controller (host) sends the beginning byte location = N  
• IDT clock will acknowledge  
• Controller (host) sends the begining byte  
location = N  
• Controller (host) sends the data byte count = X  
• IDT clock will acknowledge  
• Controller (host) starts sending Byte N through  
Byte N + X -1  
• IDT clock will acknowledge  
• Controller (host) will send a separate start bit.  
• Controller (host) sends the read addressYY(H)  
• IDT clock will acknowledge  
• IDT clock will acknowledge each byte one at a time  
• Controller (host) sends a Stop bit  
• IDT clock will send the data byte count = X  
• IDT clock sends Byte N + X -1  
• IDT clock sends Byte 0 through byte X (if X(H)  
was written to byte 8).  
• Controller (host) will need to acknowledge each byte  
• Controllor (host) will send a not acknowledge bit  
• Controller (host) will send a stop bit  
Index Block Read Operation  
Index Block Write Operation  
Controller (Host)  
Controller (Host)  
IDT (Slave/Receiver)  
IDT (Slave/Receiver)  
starT bit  
T
starT bit  
T
Slave Address XX(H)  
Slave Address XX(H)  
WR  
WRite  
WR  
WRite  
Beginning Byte = N  
Data Byte Count = X  
Beginning Byte N  
ACK  
ACK  
ACK  
ACK  
ACK  
ACK  
Beginning Byte = N  
RT  
Repeat starT  
Slave Address YY(H)  
RD  
ReaD  
ACK  
Data Byte Count = X  
Beginning Byte N  
ACK  
ACK  
Byte N + X - 1  
ACK  
P
stoP bit  
Note: XX(H) is defined by SMBus address select pins.  
Byte N + X - 1  
N
P
Not acknowledge  
stoP bit  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
10  
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
SMBusTable: PLL Mode, and Frequency Select Register  
Byte 0  
Bit 7  
Pin #  
5
5
Name  
PLL Mode 1  
PLL Mode 0  
Control Function  
PLL Operating Mode Rd back 1  
PLL Operating Mode Rd back 0  
Reserved  
Type  
R
R
0
1
Default  
Latch  
Latch  
0
See PLL Operating Mode  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Readback Table  
Reserved  
0
0
1
These bits  
PLL_SW_EN  
PLL Mode 1  
PLL Mode 0  
100M_133M#  
Enable S/W control of PLL BW  
PLL Operating Mode 1  
PLL Operating Mode 1  
Frequency Select Readback  
RW  
RW  
RW  
R
HW Latch  
S/W Control  
Bit 2 available in B  
Bit 1  
Bit 0  
See PLL Operating Mode  
Readback Table  
133MHz  
rev only.  
1
100MHz  
4
Latch  
SMBusTable: Output Control Register  
Byte 1  
Bit 7  
Pin #  
47/46  
Name  
Control Function  
Type  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
1
Default  
DIF_7_En  
DIF_6_En  
DIF_5_En  
DIF_4_En  
DIF_3_En  
DIF_2_En  
DIF_1_En  
DIF_0_En  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
1
1
1
1
1
1
1
1
43/42  
39/38  
35/34  
30/31  
26/27  
21/22  
17/18  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Low/Low  
Enable  
SMBusTable: Output Control Register  
Byte 2  
Bit 7  
Pin #  
Name  
Control Function  
Reserved  
Type  
0
1
Default  
0
0
0
0
1
1
1
1
Reserved  
Reserved  
Reserved  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
64/63  
DIF_11_En  
DIF_10_En  
DIF_9_En  
DIF_8_En  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
Output Control - '0' overrides OE# pin  
RW  
RW  
RW  
RW  
59/60  
54/55  
50/51  
Low/Low  
Enable  
SMBusTable: Reserved Register  
Byte 3 Pin # Name  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Control Function  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Type  
0
1
Default  
0
0
0
0
0
0
0
0
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
11  
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
SMBusTable: Reserved Register  
Byte 4  
Bit 7  
Pin #  
Name  
Control Function  
Reserved  
Type  
0
1
Default  
0
0
0
0
0
0
0
0
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
SMBusTable: Vendor & Revision ID Register  
Byte 5  
Bit 7  
Pin #  
-
Name  
RID3  
RID2  
RID1  
RID0  
VID3  
VID2  
VID1  
VID0  
Control Function  
Type  
R
R
R
R
R
R
R
R
0
1
Default  
X
X
X
X
0
0
0
1
A rev = 0000  
B rev = 0001  
-
-
-
-
-
-
-
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
REVISION ID  
VENDOR ID  
0001 for IDT/ICS  
SMBusTable: DEVICE ID  
Byte 6 Pin #  
Bit 7  
Name  
Control Function  
Device ID 7 (MSB)  
Type  
R
R
R
R
R
R
R
R
0
1
Default  
-
1
1
0
0
1
0
0
1
-
-
-
-
-
-
-
Device ID 6  
Device ID 5  
Device ID 4  
Device ID 3  
Device ID 2  
Device ID 1  
Device ID 0  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
1201 is 201 decimal or C9 hex  
SMBusTable: Byte Count Register  
Byte 7  
Bit 7  
Pin #  
Name  
Control Function  
Reserved  
Type  
0
1
Default  
0
0
0
0
1
0
0
0
Reserved  
Reserved  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
-
BC4  
BC3  
BC2  
BC1  
BC0  
RW  
RW  
RW  
RW  
RW  
Default value is 8 hex, so 9  
bytes (0 to 8) will be read back  
by default.  
-
-
-
-
Writing to this register configures how  
many bytes will be read back.  
SMBusTable: Reserved Register  
Byte 8 Pin # Name  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Control Function  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Type  
0
1
Default  
0
0
0
0
0
0
0
0
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
12  
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
DIF Reference Clock  
Common Recommendations for Differential Routing  
L1 length, route as non-coupled 50ohm trace  
L2 length, route as non-coupled 50ohm trace  
L3 length, route as non-coupled 50ohm trace  
Dimension or Value  
0.5 max  
0.2 max  
0.2 max  
33  
Unit Figure  
inch  
inch  
inch  
ohm  
ohm  
1
1
1
1
1
Rs  
Rt  
49.9  
Down Device Differential Routing  
L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max  
inch  
inch  
1
1
L4 length, route as coupled stripline 100ohm differential trace  
1.8 min to 14.4 max  
Differential Routing to PCI Express Connector  
L4 length, route as coupled microstrip 100ohm differential trace 0.25 to 14 max  
inch  
inch  
2
2
L4 length, route as coupled stripline 100ohm differential trace  
0.225 min to 12.6 max  
Figure 1: Down Device Routing  
L2  
L1  
Rs  
Rs  
L4  
L4'  
L2'  
L1'  
Rt  
Rt  
HCSL Output Buffer  
PCI Express  
Down Device  
REF_CLK Input  
L3' L3  
Figure 2: PCI Express Connector Routing  
L2  
L1  
Rs  
L4  
L4'  
L2'  
L1'  
Rs  
Rt  
Rt  
HCSL Output Buffer  
PCI Express  
Add-in Board  
REF_CLK Input  
L3' L3  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
13  
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Alternative Termination for LVDS and other Common Differential Signals (figure 3)  
Vdiff  
0.45v  
0.58  
0.80  
0.60  
Vp-p  
0.22v  
0.28  
0.40  
0.3  
Vcm  
1.08  
0.6  
0.6  
1.2  
R1  
33  
33  
33  
33  
R2  
R3  
R4  
Note  
150  
78.7  
78.7  
174  
100  
137  
none  
140  
100  
100  
100  
100  
ICS874003i-02 input compatible  
Standard LVDS  
R1a = R1b = R1  
R2a = R2b = R2  
Figure 3  
L2  
L1  
R3  
R4  
R1a  
L4  
L4'  
L2'  
L1'  
R1b  
R2a  
R2b  
HCSL Output Buffer  
Down Device  
REF_CLK Input  
L3'  
L3  
Cable Connected AC Coupled Application (figure 4)  
Component  
Value  
Note  
R5a, R5b  
R6a, R6b  
Cc  
8.2K 5%  
1K 5%  
0.1 µF  
Vcm  
0.350 volts  
Figure 4  
3.3 Volts  
R5a  
R5b  
Cc  
Cc  
L4  
L4'  
R6a  
R6b  
PCIe Device  
REF_CLK Input  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
14  
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
THERMALLY ENHANCED, VERY THIN, FINE PITCH  
QUAD FLAT / NO LEAD PLASTIC PACKAGE  
DIMENSIONS  
DIMENSIONS (mm)  
SYMBOL  
MIN.  
0.8  
0
0.25 Reference  
0.18 0.3  
0.50 BASIC  
9.00 x 9.00  
6.00  
MAX.  
1.0  
0.05  
SYMBOL  
64L  
64  
A
A1  
A3  
N
ND  
16  
NE  
16  
b
e
D x E BASIC  
D2 MIN. / MAX.  
E2 MIN. / MAX.  
L MIN. / MAX.  
6.25  
6.25  
0.50  
6.00  
0.30  
Ordering Information  
Part / Order Number Shipping Package  
Package  
64-pin MLF  
64-pin MLF  
64-pin MLF  
64-pin MLF  
Temperature  
0 to +70°C  
0 to +70°C  
0 to +70°C  
0 to +70°C  
Difference  
9ZX21201AKLF  
9ZX21201AKLFT  
9ZX21201BKLF  
9ZX21201BKLFT  
Trays  
Tape and Reel  
Trays  
W/O Byte 0 PLL Control  
With Byte 0 PLL Mode  
Control  
Tape and Reel  
"LF" designates PB-free configuration, RoHS compliant.  
"A and B" are the device revision designators (will not correlate with the datasheet revision).  
IDT® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
1682B- 12/08/11  
15  
9ZX21201  
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI  
Revision History  
Rev. Issuer Issue Date Description  
Page #  
0.1  
RDW  
7/15/2010 Intial Release  
1. Reformat to Z buffer DS format.  
1-3, 6-9,  
11-12  
0.2  
RDW  
8/4/2010 2. Added in power management table  
3. Minor typo fixes.  
0.3  
0.4  
RDW  
RDW  
8/26/2010 1. Updated OE latency to be 4 to 12 clocks  
4/14/2011 1. Corrected Pin description table. Pin 37 was missing  
1. Updated electrical tables with char data  
9/13/2011 2. Fixed minor typographical errors  
3. Moved to final  
A
RDW  
Various  
1. Added B rev functionality description to Features, Benefits  
2. Updated tDSPO_BYP parameter from +/-350ps to +/-250ps  
3.Updated SMBus Byte 0 with B rev functionality  
B
RDW  
12/8/2011  
1,7,11,15  
4. Updated ordering information to include B rev  
Innovate with IDT and accelerate your future networks. Contact:  
www.IDT.com  
For Sales  
For Tech Support  
800-345-7015  
408-284-6578  
408-284-8200  
pcclockhelp@idt.com  
Fax: 408-284-2775  
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KT22 7TU  
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800 345 7015  
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Phone: 65-6-744-3356  
Fax: 65-6-744-1764  
England  
Phone: 44-1372-363339  
Fax: 44-1372-378851  
© 2010 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, ICS, 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  
16  
厂商 型号 描述 页数 下载

IDT

 		9ZX21201 12 ，输出差分Z缓冲的第二代PCIe / 3和QPI[ 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI ] 16 页

IDT

 		9ZX21201AKLF 12 ，输出差分Z缓冲的第二代PCIe / 3和QPI[ 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI ] 16 页

IDT

 		9ZX21201BKLF 12 ，输出差分Z缓冲的第二代PCIe / 3和QPI[ 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI ] 16 页

IDT

 		9ZX21201BKLFT 12 ，输出差分Z缓冲的第二代PCIe / 3和QPI[ 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI ] 16 页

IDT

 		9ZX21501B 15输出差分Zbuffer的第二代PCIe / 3和QPI[ 15-Output Differential Zbuffer for PCIe Gen2/3 and QPI ] 16 页

IDT

 		9ZX21501BKLF 15输出差分Zbuffer的第二代PCIe / 3和QPI[ 15-Output Differential Zbuffer for PCIe Gen2/3 and QPI ] 16 页

IDT

 		9ZX21501BKLFT 15输出差分Zbuffer的第二代PCIe / 3和QPI[ 15-Output Differential Zbuffer for PCIe Gen2/3 and QPI ] 16 页

IDT

 		9ZX21901B 19 ，输出差分Zbuffer的第二代PCIe / 3和QPI[ 19-Output Differential Zbuffer for PCIe Gen2/3 and QPI ] 16 页

IDT

 		9ZX21901BKLF 19 ，输出差分Zbuffer的第二代PCIe / 3和QPI[ 19-Output Differential Zbuffer for PCIe Gen2/3 and QPI ] 16 页

IDT

 		9ZX21901BKLFT 19 ，输出差分Zbuffer的第二代PCIe / 3和QPI[ 19-Output Differential Zbuffer for PCIe Gen2/3 and QPI ] 16 页

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