TDA9874A Philips Semiconductors, TDA9874A Datasheet - Page 6

• Manufacturer Part Number: TDA9874A
• Description: Digital TV sound demodulator/decoder
• Manufacturer: Philips Semiconductors

Philips Semiconductors
4
1999 Dec 03
handbook, full pagewidth
Digital TV sound demodulator/decoder
The pin numbers given in parenthesis refer to the TDA9874AH.
BLOCK DIAGRAM
SYSCLK
ADDR1
ADDR2
XTALO
TEST1
TEST2
XTALI
SDO
SDA
SCK
SCL
TP1
TP2
TP3
WS
P1
P2
18 (13)
19 (14)
16 (11)
14 (9)
41 (37)
4 (42)
23 (19)
33 (29)
34 (30)
20 (15)
38 (34)
35 (31)
36 (32)
37 (33)
26 (22)
21 (17)
(16)
IDENTIFICATION
INTERFACE
DETECTION
INTERFACE
I
I
CLOCK
2
2
PEAK
C-BUS
TEST
S-BUS
TDA9874APS
(TDA9874AH)
DEMODULATION
2-CHANNEL
SATELLITE
SELECTOR
DECODER
DEMATRIX
ANALOG/
Fig.1 Block diagram.
DIGITAL
FM/AM
SIF2
27 (23)
INPUT SWITCH
AGC, ADC
6
CHANNEL
BUFFERS
OUTPUT
MONO
OUTM
DEMODULATION
5 (43)
POST FILTER
CROSSBAR
DECODER
ANALOG
ADJUST
SWITCH
3 DACs
NICAM
NICAM
LEVEL
SIF1
29 (25)
OUTL
2-CHANNEL
BUFFERS
OUTPUT
7 (1)
OUTR
8 (2)
REFERENCE
OPAMPS
DIGITAL
SUPPLY
SUPPLY
SUPPLY
DACs
SIF
Preliminary specification
(21) 25
(20) 24
(28) 32
(27) 31
(24) 28
(18) 22
(10) 15
(12) 17
(35) 39
(36) 40
(26) 30
(38) 42
(7) 13
(6) 12
(5) 11
(4) 10
(44) 6
(41) 3
(39) 1
(40) 2
MHB584
(3) 9
TDA9874A
(8)
V DEC
V SSA2
V DDA3
V SSA3
V ref1
I ref
V SSD2
V DDD1
V SSD1
V DDD3
V SSD3
CRESET
V DDA1
V SSA1
V SSA4
V ref2
EXTIR
EXTIL
MONOIN
NICAM
PCLK
n.c.