TDA9874A Ver la hoja de datos (PDF) - Philips Electronics

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componentes Descripción

Fabricante

TDA9874A

Digital TB sound demodulator/processor

Philips Electronics 

Philips Semiconductors

Digital TV sound demodulator/decoder

4 BLOCK DIAGRAM

Preliminary specification

TDA9874A

handbook, full pagewidth

P1

P2

ADDR1

ADDR2

SCL

SDA

41 (37)

4 (42)

18 (13)

23 (19)

33 (29)

34 (30)

I2C-BUS

INTERFACE

SIF2

27 (23)

SIF1

29 (25)

INPUT SWITCH

AGC, ADC

SUPPLY

SIF

(21) 25

(20) 24

(28) 32

(27) 31

(24) 28

(18) 22

VDEC

VSSA2

VDDA3

VSSA3

Vref1

Iref

IDENTIFICATION

FM/AM

DEMODULATION

NICAM

DEMODULATION

XTALI

XTALO

SYSCLK

20 (15)

19 (14)

38 (34)

CLOCK

PEAK

DETECTION

DEMATRIX

2-CHANNEL

ANALOG/

SATELLITE

DECODER

NICAM

DECODER

LEVEL

ADJUST

SDO

WS

SCK

35 (31)

36 (32)

37 (33)

I2S-BUS

INTERFACE

DIGITAL

SELECTOR

POST FILTER

3 DACs

DIGITAL

SUPPLY

(10) 15

(12) 17

(8)

NICAM

PCLK

n.c.

(7) 13

(6) 12

(5) 11

(35) 39

(36) 40

(26) 30

VSSD2

VDDD1

VSSD1

VDDD3

VSSD3

CRESET

SUPPLY

DACs

OPAMPS

REFERENCE

(3) 9

(4) 10

(44) 6

(41) 3

VDDA1

VSSA1

VSSA4

Vref 2

TEST1

TEST2

TP1

TP2

TP3

26 (22)

21 (17)

16 (11)

14 (9)

(16)

TDA9874APS

(TDA9874AH)

TEST

ANALOG

CROSSBAR

SWITCH

MONO

CHANNEL

OUTPUT

BUFFERS

5 (43)

2-CHANNEL

OUTPUT

BUFFERS

7 (1) 8 (2)

OUTM

OUTL OUTR

(39) 1

(40) 2

(38) 42

EXTIR

EXTIL

MONOIN

MHB584

The pin numbers given in parenthesis refer to the TDA9874AH.

Fig.1 Block diagram.

1999 Dec 03

6

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