Rev.2.00 Sep 14, 2006 page 1 of 16

M52347SP/FP

Sync Signal Processor

REJ03F0190-0200

Rev.2.00

Sep 14, 2006

Description

The M52347 automatically selects three types of synchronous signals containing separate sync (positive and negative

(sync negative polarity), and performs waveform shaping. The IC is optimum to synchronous signal processing for

multi-scan type display monitor.

Features

• Low power consumption with supply voltage of 5 V

• Capable of obtaining output information on whether to input synchronous signal, and on polarity

• Output of clamp pulse

• Equipped with V TIME GATE SW that enables selecting whether or not VD portion pulse is output from pin 14/15.

• Equipped with CLAMP SW that enables switching the clamp pulse output position.

Application

Display monitor

Recommended Operating Condition

Supply voltage range:

Rated supply voltage:

Block Diagram

CLAMP

TIMING

CLAMP

SW

GREEN

IN

GND

COMP/H

IN

COMP/H

DET

V IN

V TIME GATE

SW

V DET

H.STATE V.STATE

V.POL.

H.POL.

CLAMP+

OUT

HD+

OUT

VD+

OUT

V S/S

OUT

V S/S

IN

HD−

OUT

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

CLAMP

GEN

EDGE

SW

V.TIME

GATE

V.SYNC

SEP

SYNC

SEP

H

SHAPE

H

DET

LOGIC

LOGIC

V

SHAPE

V

DET