LR38575 Datasheet, PDF (4/9 Pages) Sharp Electrionic Components – Timing Generator IC for 1 310 k-pixel CCD

LR38575
PIN NO. SYMBOL IO SYMBOL POLARITY
PIN NAME
14 BCPX
O3
Optical black clamp
pulse output
15 CLPX
O3
Clamp pulse output
16 ADCK
17 GND
O6MA3
AD clock output
–
– Ground
18 FCDS O6MA3
CDS pulse output 1
19 FS
O6MA3
CDS pulse output 2
20 VDD3
–
– Power supply
21 ACLX
ICU3 – All clear input
22 RS
23 GND
O6MA3
S/H pulse output
–
– Ground
24 VCON
ICU3 – VD control input
25 CKI
26 CKO
27 CLK
OSCI3 – Clock input
OSCO3 – Clock output
O6MA3
Clock output
DESCRIPTION
A pulse to clamp the optical black signal.
This pulse is controlled by serial data BCPCNT;
BCPCNT = H; This pulse stays high during the
absence of effective pixels within the
vertical blanking or during the
sweepout signal.
BCPCNT = L; This pulse stays high during the
sweepout signal.
A pulse to clamp the dummy outputs of the CCD signal.
This pulse stays high during the sweepout period.
An output pin for AD converter. The output phase of
ADCK is selected by serial data in 90˚ steps.
A grounding pin.
A pulse to clamp the feed-through level for the CCD.
The output phase and output polarity of FCDS are
selected by serial data.
A pulse to sample-hold the signal for the CCD.
The output phase and output polarity of FS are selected
by serial data.
Supply of +3.3 V power.
An input pin for resetting all internal circuits at power-on.
Connect to VDD through the diode and GND through the
capacitor.
A pulse to sample-hold the signal for the CDS circuit.
The output polarity of RS is selected by serial data.
A grounding pin.
An input pin to control internal vertical clock for long
shutter speed.
H level or open : VD
L level
: VD is masked by the pulse which
is latched at the rising edge of VD.
It's necessary to be set SMD = high and number of the
fields data n ≥ 2 in serial data control at VCON operation.
An input pin for reference clock oscillation.
The frequency is 24.54545 MHz.
An output pin for reference clock oscillation.
The output is the inverse of CKI (pin 25).
An output pin to generate HD and VD pulses.
The frequency is 12.272725 MHz.
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