tda9874h NXP Semiconductors, tda9874h Datasheet - Page 6

• Manufacturer Part Number: tda9874h
• Description: Digital Tv Sound Demodulator/decoder
• Manufacturer: NXP Semiconductors

Philips Semiconductors
4
2000 Jun 26
handbook, full pagewidth
Digital TV sound demodulator/decoder
BLOCK DIAGRAM
SYSCLK
ADDR1
ADDR2
XTALO
TEST1
TEST2
XTALI
SDO
SDA
SCK
SCL
TP1
TP2
WS
P1
P2
37
42
13
19
29
30
15
16
34
31
32
33
22
17
11
9
IDENTIFICATION
TDA9874H
INTERFACE
INTERFACE
I
I
CLOCK
2
2
VCXO
C-BUS
S-BUS
TEST
DEMODULATION
2 CHANNEL
SATELLITE
SELECTOR
DECODER
DEMATRIX
ANALOG/
DIGITAL
FM/AM
Fig.1 Block diagram.
SIF2
23
INPUT SWITCH
AGC, ADC
6
OUTR
DEMODULATION
POST FILTER
CROSSBAR
DECODER
AF-OUPUT
BUFFERS
ANALOG
ADJUST
2
SWITCH
2 DACS
NICAM
NICAM
LEVEL
SIF1
25
OUTL
1
OPERATIONAL
SUPPLY DAC
REFERENCE
AMPLIFIERS
DETECTION
DIGITAL
SUPPLY
SUPPLY
SUPPLY
TIMING
DAC
SIF
21
20
24
18
14
10
12
28
27
35
36
26
41
43
44
39
40
38
Product specification
6
5
8
7
3
4
TDA9874H
MGL248
V DDA2
V SSA2
V ref1
I ref
V DDD1
V SSD1
V DDD2
V SSD2
V DDD3
V SSD3
V DDD4
V SSD4
CRESET
V DDA1
V SSA1
V ref2
V DDA3
V SSA3
EXTIR
EXTIL
MONOIN
V tune
NICAM
PCLK