M52749FP Просмотр технического описания (PDF) - Renesas Electronics

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M52749FP

BUS Controlled 3ch Video Pre-amp for CRT Display Monitor

Renesas Electronics 

M52749FP

Block Diagram

OSD IN (R) 4

2

INPUT (R)

VCC (R) 12 V 3

5

OSD IN (G) 9

6

INPUT (G)

VCC (G) 12 V 8

10

Clamp

Clamp

Sub

contrast

Sub

contrast

OSD IN (B) 13

11

INPUT (B)

VCC (B) 12 V 12

16

Contrast

(ABL) IN

17

7

INPUT (G)

SOG Sep OUT 20

Clamp

Sync on

Green Sep

Sub

contrast

21

Clamp Pulse IN

Main

contrast

VCC

= 12 V

42

Main

Brightness

34

Retrace

BLK IN

30

OSD Mix

Amp

Retrace

blanking

41 OUTPUT (R)

Clamp

F/B

Main

contrast

OSD Mix

Amp

Clamp

F/B

Retrace

blanking

38 OUTPUT (G)

Main

contrast

OSD Mix

Amp

Main

contrast

8 bit

OSD

level 4 bit

Clamp

F/B

B Sub Cont 8 bit

G Sub Cont 8 bit

R Sub Cont 8 bit

DAC

Retrace

blanking

BUS

I/F

33 OUTPUT (B)

35 Main Contrast

Ref

31 Main Contrast

Cont

19 VCC 5 V

(Digital)

23 SDA

22 SCL

24

14

1

OSD BLK IN

25 26 27 28 29 32 36 39

DAC output

REJ03F0194-0201 Rev.2.01 Mar 31, 2008

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