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Fabricante

SAA5261PS/223

10-page intelligent teletext decoders

Philips Electronics 

Philips Semiconductors

10-page intelligent teletext decoders

Product specification

SAA5261; SAA5262; SAA5263

SYMBOL

G

R

VDS

HSYNC

VSYNC

VDDA

VDDD(T)

OSCGND

XTALI

XTALO

RESET

VDDD(M)

PUINL

DISDSR

DIS8/30

DISLCBD

SCLK2

SDAT2

ME8/30T

E/W

PIN

DESCRIPTION

33 green dot rate character output of the green colour information: the high voltage level is

defined by the RGBREF pin (can source 4 mA)

34 red dot rate character output of the red colour information: the high voltage level is defined by

the RGBREF pin (can source 4 mA)

35 push-pull output for blanking the TV picture

36 horizontal sync input: the polarity of this pulse is set by input HSMODE

37 vertical sync input: the polarity of this pulse is set by input VSMODE

38 analog supply voltage (+5 V)

39 digital supply voltage for teletext circuits (+5 V)

40 ground for crystal oscillator

41 12 MHz crystal oscillator input

42 12 MHz crystal oscillator output

43 reset input

44 digital supply voltage for microcontroller (+5 V)

45 power-up in list mode control input: LOW selects auto TOP/Fastext on power-up; HIGH

selects LIST mode on power-up

46 disable default status row input: LOW enables display of status row

47 disable packet 8/30 display input: LOW enables display of packet 8/30

48 disable Link Control Byte (LCB) decode input: LOW enables decoding of the LCB in Fastext

49 serial clock input (I2C-bus)

50 serial data input/output (I2C-bus)

51 mesh 8/30 and time displays input: HIGH will select a meshed display for the packet 8/30 and

time

52 East/West language select input: LOW selects West language

1998 Apr 22

6

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