Ic Block Diagrams - Sony CDX-C90R Service Manual

• IC Block Diagrams

IC1 CXA1791N-T4 (SERVO BOARD)
1
LD
APC VREF
PD AMP 1.25V
+
–
2
PD
3
PD1 –
+
VC
RF
IV AMP1
PD2 4
–
+
VC
RF
IV AMP2
GND 5
F 6
–
+
VC
F
IV AMP
E 7
–
+
VC
E
IV AMP
VR 8
9 VC
VC
10
NC
IC2 CXD2522R-T6
XEMP 49
50
XWIH
AM4 51
AM3
52
AM2 53
54
AM1
55
AM0
VDD 56
57
XQOK
GSCR 58
SCOR
59
NC
60
NC 61
NC
62
GRST
63
XRST
64
VC
APC
LD AMP
+
VCC 20 VCC
–
19 APC ON
18 RFI
VC
–
17 RFO
+
RF
VC
SUMMING AMP
VC
–
16 FE
+
FOCUS
ERROR AMP
15 FE BIAS
VC
VC
–
14 TE
+
VC
TRACKING
ERROR AMP
13 EI
12 EO
VCC
VC BUFFER
11 NC
47 45 44 43 42
48 46 41
CPU I/F
ADDRESS MONITOR
VWA
WRITE
BASE
COUNTER
READ
BASE
COUNTER
DATA
DSP
LINKING
I/F
CONTROL
1 2 3 4 5 6 7 8 9 10 11
IC6 LB1638MTP-T1
GND 1
2
IN1
VCC 3
IN2 4
GND 5
IC551 LC89170M-TLM
EXCK
1
SBSO 2
32 WORD X 8 BIT
DUAL PORT RAM
3
SCOR
WFCK 4
5
MCK
6
XMODE
GND 7
39 38 37 35
40 36
DRAM
I/F
SELECTOR
TIMING
GEN.
DAC
I/F
12 13 14 15 16
– 63 –
10 N.C.
9 OUT1
8 VS
7
OUT2
6 N.C.
VDD
CPU INTERFACE
CRC
CHECKER
TIMING
&
SYNCHRONIZATION
SIGNAL
PROTECTION
33
34
32
XCAS
31
D4
30 D3
29
D0
28 D1
27 XWE
26 XRAS
25 A9
24 VDD
23 A0
22
A1
21
A2
20
A3
19 C176
DIGITAL
18
DOUT
OUT
17
LRCK
14 VDD
13
DQSY
12 SRDT
11 SCLK
10
SW2
9 SW1
8 TEST