Sony CDX-4480ESP Service Manual page 34

• IC Block Diagrams
IC1 CXA1791N-T4
LD 1
APC VREF
PD AMP 1.25V
+
–
PD 2
3
PD1
–
+
VC
RF
IV AMP1
PD2 4
–
+
VC
RF
IV AMP2
GND 5
6
F
–
+
VC
F
IV AMP
7
E –
+
VC
E
IV AMP
VR 8
VC 9 VC
NC 10
IC2 CXD2522R-T6
49
XEMP
50
XWIH
AM4 51
AM3
52
53
AM2
54
AM1
55
AM0
56
VDD
57
XQOK
GSCR 58
SCOR
59
NC
60
NC
61
NC 62
GRST 63
XRST
64
VC
APC
LD AMP
+
– VCC
VC
–
+
RF
VC
SUMMING AMP
VC
–
+
FOCUS
ERROR AMP
VC
VC
–
+
VC
TRACKING
ERROR AMP
VCC
VC BUFFER
48 47 46 45 44 43 42 41
CPU I/F
ADDRESS MONITOR
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
IN1 2
20 VCC
19 APC ON
VCC 3
18 RFI
IN2 4
17 RFO
GND 5
16 FE
15 FE BIAS
14 TE
13 EI
12 EO
11 NC
40 39 38 37 36
DRAM
VWA
SELECTOR
TIMING
GEN.
DAC
I/F
12 13 14 15 16
– 53 –
10
9
8
7
6
35 34 33
32 XCAS
31
D4
30
D3
29
D0
28 D1
27 XWE
I/F
26 XRAS
25 A9
24 VDD
23
A0
22 A1
21 A2
20 A3
19 C176
DIGITAL
18 DOUT
OUT
17 LRCK
N.C.
OUT1
VS
OUT2
N.C.