SAA5261PS Ver la hoja de datos (PDF) - Philips Electronics

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SAA5261PS

10-page intelligent teletext decoders

Philips Electronics 

Philips Semiconductors

10-page intelligent teletext decoders

Product specification

SAA5261; SAA5262; SAA5263

BLOCK DIAGRAM

handbook, full pagewidth

43 POWER-ON

RESET

RESET

27

FRAME

PON RGBREF G

VDS COR

B

R

35 30 29 31 32 33 34

VDDA VDDD(T) VDDD(M)

38

39

44

DISPLAY

DRAM

REFRESH

AND TIMING

10 k × 8

DRAM

9 to 12

res

24 TO 18

HAMMING

DECODER

TELETEXT

PL 21 ACQUISITION

AND

DECODING

SERIAL-TO-

PARALLEL

CONVERTER

DATA SLICER

AND CLOCK

REGENERATOR

PACKET 26

PROCESSING

ENGINE

SAA526xPS

VPS

ACQUISITION

AND

DECODING

WSS

ACQUISITION

AND

DECODING

TELETEXT

OR

VPS

CONTROL

INPUT CLAMP

AND SYNC

SEPARATOR

MEMORY

INTERFACE

SYSTEM

CONTROLLER

I2C-BUS

INTERFACE

52

E/W

20

16

PDI

SA

48

DISLCBD

17 FP

47 DIS8/30

18 HSMODE

46

DISDSR

19 VSMODE

45 PUINL

1-8 V0-V7

51 ME8/30T

15 SDA1

14

SCL1

50 SDA2

49

SCL2

DISPLAY

CLOCK

GENERATOR

25 BLACK

36

HSYNC

37

VSYNC

26 ANALOG-

Iref

REFERENCE

GENERATOR

22 13 28

VSSA VSSD1 VSSD2

ANALOG-

TO-DIGITAL

CONVERTER

23

CVBS1

24

CVBS2

1998 Apr 22

Fig.1 Block diagram.

4

12 MHz

CLOCK

GENERATOR

40

OSCGND

42

XTALO

41

XTALI

MGL418

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