LR38620

4

PIN NO. SYMBOL IO SYMBOL POLARITY

PIN NAME

DESCRIPTION

16

BCPX

O3MR1

Optical black clamp

pulse output

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.

Clamp pulse output

O3MR1

CLPX

17

18

ADCK

O6M32

AD clock output

An output pin for AD converter. The output phase of

ADCK is selected by serial data in 90˚ steps.

A pulse to clamp the feed-through level for the CCD.

The output phase and output polarity of FCDS are

selected by serial data.

CDS pulse output 1

O6M32

FCDS

19

20

FS

O6M32

CDS pulse output 2

A pulse to sample-hold the signal for the CCD.

The output phase and output polarity of FS are selected

by serial data.

A trigger pulse for effective signal period.

Trigger output

O3MR1

SHTR

21

22

ID

O3MR1

Line index pulse

output

The pulse is used in the color separator.

The signal switches between high and low at every line.

Supply of +3.3 V power.

Power supply

–

23

–

–

24

–

Power supply

Supply of +3.3 V power.

A grounding pin.

Ground

–

GND

25

–

–

26

CKI

OSCI3

Clock input

An input pin for reference clock oscillation.

The frequency is 49.0909 MHz.

An output pin for reference oscillation.

The output is the inverse of CKI (pin 26).

Clock output

OSCO3

CKO

27

–

An output pin to generate HD and VD pulses.

The frequency is 24.54545 MHz.

Clock output

O6M32

CLK

28

29

DCLK

O6M32

Clock output

An output pin for DSP IC. The frequency is 24.54545 MHz.

The output phase of DCLK is selected by serial data in

90˚ steps.

An input pin for reference of vertical pulse.

Connect to VD pin of DSP IC.

Vertical reference

pulse input

IC3

VD

30

31

HD

IC3

Horizontal drive

pulse input

An input pin for reference of horizontal pulse.

Connect to HD pin of DSP IC.

An input pin for the strobe pulse, to control the functions

of LR38620. For details, see "Serial Data Control".

Strobe pulse input

ICSD3

32

–

–

33

ICSD3

Shift register clock

input

An input pin for the clock of the shift register, to control

the functions of LR38620. For details, see "Serial Data

Control".