LC74794 データシートの表示（PDF） - SANYO -> Panasonic

部品番号

コンポーネント説明

メーカー

LC74794

On-Screen Display Controller LSI

SANYO -> Panasonic 

LC74794, 74794M

Continued from preceding page.

Pin no. Pin

Function

9

CS1 Enable input 1

10 SCLK1 Clock input 1

11

SIN1 Data input 1

12

VDD2 Power supply

13

CPOUT Charge pump output

14

VCOIN Oscillator control voltage input

15

VSS3 Ground

16

VDD3 Power supply (+5 V)

17

VCOR Oscillator range adjustment

18

DAV Data present output

19

CVOUT Video signal output

20

VSS2 Ground

21

CVIN Video signal input

22

CVCR Video signal input

23

VDD1 Power supply (+5 V)

24

SYNIN Sync separator circuit input

25

SEPC Sync separator circuit adjustment

26 SEPOUT Composite synchronizing signal output

27

SEPIN Vertical synchronizing signal input

28

CDLR Background color phase adjustment

29

RST Reset input

30

VDD1 Power supply (+5 V)

Notes

Enable input for OSD serial data input

Serial data input is enabled by a low-level input.

(A pull-up resistor is built in so the input has hysteresis characteristics.)

Serial data clock input

(A pull-up resistor is built in so the input has hysteresis characteristics.)

Serial data input (A pull-up resistor is built in so the input has hysteresis characteristics.)

Composite video signal level adjustment power supply (analog system power supply)

The charge pump output. Connect a low-pass filter to this pin.

VCO control voltage input

Ground (VCO ground)

Power supply (+5 V: VCO power supply)

Connection for the VCO range adjustment resistor

Outputs a low level when PDC/VPS data has been received.

Composite video signal output

Ground (analog system ground)

Composite video signal input

SECAM chrominance signal input

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

Internal sync separator circuit video signal input

Internal sync separator circuit adjustment input

Composite synchronizing signal output for the built-in sync separator circuit. Can be

switched to function as an output for the signal (high or ST. pulse) due to MOD0 by setting

SEL0 high.

Inputs the vertical synchronizing signal created by integrating the SEPOUT pin output

signal.

An integration circuit must be connected to the SEPOUT pin. This pin must be tied to VDD1

if unused.

Background color phase adjustment resistor connection

System reset input

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

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

No. 5557-3/30

Share Link: