PIN FUNCTION
10.
This is a pin to input the clock which is used as
the reference of the horizontal and vertical pulses.
This pin should be connected to DO on the timing
The frequency varies depending on CKMD (pin
5) as follows.
●
system
Main clock
1
270000 pixels fck
360000 pixels fck
system
:
:
9.534964 MHz(606 fH)
12.713285
fH)
.
320000 pixels fck
:
9,656250 MHz(6I 8
fH)
420
pixels
: 12.875000 MHz(824 fH)
This is an inverted output pin for CLKI (pin 1).
Clock out
o
CLKO
2
3
This is a pin to select TV systems.
—
—
● L o w
level
system
system
TV mode select
ICD
● High level
:
This is
BCPI (pin 10) within the vertical blanking period.
● High level BCPI outputs continuous pulses.
a pin to control stop and continuance of
Clamp pulse mode
select
:
CPMD
4
● Low level : BCP I stops outputting composite
pulses while there is no effective
pixel within the V blanking period.
This is an input pin to switch the frequency devision
in accordance with the area sensor as follows.
Frequency division
1/4
1/3
–
Clock mode select
CKMD
5
output
Low
High
CKMD
360000
270000
Number of pixels
This is an input pin for the external V reset pulse
which is used to apply vertical synchronization to
the counter (2 fck counter) on the synchronization.
This resetting takes priority over the internal reset-
ting. Since the rise of input at
is taken at the
horizontal synchronous frequency (2 fH) which is two
times as high as the internal frequency, when the
vertical pulses which were separated in terms of
frequency from the composite synchronous signal
from other equipment are used, the fall must have
VRI
u
6
Vertical reset
a
phase difference of less than 1/2
with the start timing of the vertical synchronous
signal. When the synchronization is obtained,
the High level should be selected. The input is de-
signed as a trigger buffer.
compared
This is an input pin for tests, Typically, this pin
should be open or at the Low level.
Test
1
–
7
