Sony HCD-RG222 Service Manual page 42

HCD-RG222
• IC BLOCK DIAGRAMS
IC301 TC94A34FG-002 (BD81A BOARD)
32 31 30 29 28 27
RAS 33
CAS 34
OE 35
BUCK 36
CCE 37
AD12 38
AD11 39
40
VDDM
SRMSTB 41
42
VDDT
AD10 43
AD9 44
Bus
Switch
AD8 45
AD7 46
47
AD6
48
AD5
49 50 51 52 53 54
26 25 24 23 22 21 20 19 18 17
16 LRCKIA
15 BCKIA
14
SDI0
13 LRCKO
12
BCKO
11 SDO0
10 VSS
9 VDDT
8 MIACK
7 MICK
6 MIDIO
5 MILP
4 MICS
3 STANBY
2
RESET
1 VDDP
Timing
VC0
Generator
55 56 57 58 59 60 61 62 63 64
IC251 BA5947FM (BD81A BOARD)
CH4OUTR 19 D
CH4OUTF 20 D
CH3OUTF 21 D
19k
CH3OUTR 22 D
10k
POW
23 VCC
POWVCC
(ch3, 4)
50k 50k
24 POW
MUTE
VCC
25
GND
GND 26
PREGND 27
28
CT
CH3RIN 29
CH3FIN 30
100k
CH4IN 31
PIN3
32
CH4CAPA
10k
50k
OUTVREF 33
34
DPOUT
Pre
TREVCC 35
Vcc
36
NC
42 42
IC701, 712 BA6956AN (DRIVER BOARD)
D 18 CH1PUTF
D CH1OUTR
17
D 16 CH2OUTF
PIN26
6.5k
D 15 CH2OUTR
Vref
POW
1 2 3
VCC
14 POWVCC
(ch1, 2)
50k 50k
13 CNF4
50k 50k
12 GND
Vref
11 C-M
10 C-P
9 VG
8 CH2RIN
7
CH2FIN
6 CH1RIN
5 CH1FIN
SW
4 SW
3 OPIN+
2
OPIN-
1 NC
TSD
CONTROL LOGIC
4 5 6 7 8 9