JVC KD-S845 Service Manual page 26

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3 7 63 1515 0
4.12 TC9490FA (IC541) : DSP & DAC
• Pin layout & Block daiagram
48 47
DV
49
SS3
50
RO
51
DV
DD3
LPF
52
DVR
LO 53
54
DV
SS3
55
ZDET
V 56
SS5
57
BUS0
58
BUS1
59
BUS2
TE
L 13942296513
60
BUS3
61
BUCK
62
/CCE
63
/RST
64
V
DD5
1 2
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1-26 (No.49858)
http://www.xiaoyu163.com
46 45 44 43 42
Clock
generator
1-bit
DAC
Address
circuit
16k
RAM
Audio output
Digital output
circuit
Micro-
controller
interface
3 4 5 6 7
x ao
y
i
http://www.xiaoyu163.com
8
41 40 39 38 37
PWM
Servo control
ROM
Digital equalizer
automatic
adjustment circuit
RAM
CLV servo
Sync signal
protection
Q Q
3 6 7 1 3
EFM
Sub code
detector
8 9 10 11 12
u163
.
2 9 9 4 2 8
36 35 34 33
TEZI
32
31
TEI
D/A
30
SBAD
29
FEI
A/D
28 RFRP
27
RFZI
26
RFCT
25 AV
24
RFI
Data
slicer
23
SLCO
22
AV
1 5 0 5 8 2 9 9 4
VCO
21
VCOF
20
RV
19
LPFO
PLL
TMAX
18
LPFN
17
TMAX
13 14 15 16
m
co
9 9
DD3
SS3
2 8 9 9
REF