No. 5731-3/23

LC74788, 74788M, 74788JM

Continued from preceding page.

Pin no.

Pin

Function

Notes

13

Video signal output

Composite video signal output

14

Ground

Ground connection (analog system ground)

15

Video signal input

Composite video signal input

16

Video signal input

SECAM chrominance signal input

17

Power supply

Power supply (+5 V: digital system power supply)

Video signal input to the internal sync separator circuit (Used as either the horizontal

18

Sync separator circuit input

synchronizing signal or the composite synchronizing signal input when the internal sync

separator circuit is not used.)

19

Sync separator circuit bias

Internal sync separator circuit bias voltage monitor

voltage

20

Composite synchronizing

Internal sync separator circuit composite synchronizing signal output. Can be switched to

signal output

function as a signal (high, low, or ST. pulse) output by the SEL0 and MOD0 setting.

21

Vertical synchronizing signal input

unused. This pin can be switched to function as the frame signal input mode by setting SEL1

high. This is valid when CTL3 is set high. This input has hysteresis characteristics.

22

CDLR

Background color phase

Background color phase adjustment. Connect a resistor between this pin and ground.

adjustment

23

RST

Reset input

System reset input

A pull-up resistor is built in and the input has hysteresis characteristics.

24

Power supply (+5 V)

Power supply (+5 V: digital system power supply)