Sanyo CP28WF2, Руководство по обслуживанию

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IC Block Diagrams
IC3451 < Digital TV Sound Processor > TDA9875A
I
2
C-BUS
INTERFACE
ADDR1
ADDR2
P1
P2
9
20
SCL
SDA
3
13
4
5
IDENTIFICATION
CLOCK
XTALI
XTALO
SYSCLK
18
17
21
PEAK
DETECTION
SDI1
SDI2
SDO1
SDO2
SCK
WS
27
26
25
24
22
23
I
2
C-BUS
AUDIO
INTERFACE
VDDD1
VDDD2
VSSD1
VSSD2
CRESET
15
64
14
49
16
DIGITAL
SUPPLY
TEST1
TEST2
28
30
TEST
TDA9875
MOL MOR AUXOL AUXOR
61 60
58
57
SUPPLY
OPERATIONAL
AMPLIFIERS
DAC(2)
DAC(2)
AUDIO PROCESSING
DAC(2)
ADC(2)
DIGITAL
SELECT
LEVEL
ADJUST
LEVEL
ADJUST
DEMATRIX
NICAM
DECODER
FM (AM)
DEMODULATION
NICAM
DEMODULATION
INPUT SWITCH
AGC, ADC
SIF2 SIF1
10 12
SUPPLY
SOUND IF
(SIF)
VDDA1
VSSA1
V
ref1
I
ref
TIMING
DETECTION DAC
19
2
1
V
tune
NICAM
PCLK
SCIR1
SCIL1
SCIR2
SCIL2
EXTIR
EXTIL
MONOIN
33
34
36
37
31
32
29
SCOR1
SCOL1
SCOR2
SCOL2
LOR
LOL
47
48
51
52
63
62
ANALOG
CROSSBAR
SWITCH
CAPL2
CAPL1
CAPR1
CAPR2
42
41
45
44
PCAPR
PCAPL
VDDA2
VSSA2
VSSG
V
ref2
V
ref(P)
V
ref(n)
54
55
38
43
35
46
39
40
SUPPLY
DAC
VDDA3
VSSA3
V
ref3
VSSA4
SUPPLY DAC
REFERENCE
59
56
53
50
7
6
11
8
(first general purpose I/O pin)
(second general purpose I/O pin)
(first I
2
C-bus slave
address modifier)
(second I
2
C-bus slave
address modifier)
(I
2
C-bus clock)
(I
2
C-bus data)
(crystal oscillator input)
(crystal oscillator output)
(system clock output)
(I
2
S-bus data input 1)
(I
2
S-bus data input 2)
(I
2
S-bus data output 1)
(I
2
S-bus data output 2)
(I
2
S-bus clock)
(I
2
S-bus word select)
(digital supply voltage 1)
(digital supply voltage 2)
(supply ground 1)
(supply ground 2)
(capacitor for power-on reset)
(first test pin)
(second test pin)
(analog supply voltage 1)
(supply ground 1)
(reference voltage)
(resistor for reference
current generator)
(tuning voltage output for crystal
oscillator)
(serial NICAM data output at
728 kHz)
(NICAM clock output at 728 kHz)
(SCART 1 input right channel)
(SCART 1 input left channel)
(SCART 2 input right channel)
(SCART 2 input left channel)
(external audio input right channel)
(external audio input left channel)
(audio mono input)
(SCART 1 output right channel)
(SCART 1 output left channel)
(SCART 2 output right channel)
(SCART 2 output left channel)
(line output right channel)
(line output left channel)
(filter capacitor pin 2 )
(filter capacitor pin 1)
(filter capacitor pin 1)
(filter capacitor pin 2)
(post-filter capacitor pin right channel,
audio digital-to-analog coverter)
(post-filter capacitor pin
left channel, audio digital-
to-analog converter)
(analog supply votage 2)
(supply ground 2)
(ground guards)
(reference voltage)
(positive reference voltage)
(reference voltage ground)
(analog supply voltage)
(supply ground 3)
(reference voltage)
(supply ground 4)
(Loudspeak
er (Main)
output r
ight channel)
(Loudspeak
er (Main)
output left channel)
(Headphone (A
uxiliar
y)
output r
ight channel)
(Headphone (A
uxiliar
y)
output left channel)
(sound IF input 2)
(sound IF input 1)