Read Sony SDP-EP70 / SDP-EP90ES Service Manual online
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4-17. IC BLOCK DIAGRAMS
• Main section
IC202 AT24C02N-10SC
IC302 TC74HC153AF
IC301 LC8905VD
1
2
3
4
8
6
5
8
DREF
ACK
DATA REGISTER
YDEC
E
2
PROM
61x61
XDEC
H. V. GENERATION
TIMING & CONTR OL
V
SS
NC
NC
NC
START CYCLE
CONTROL
LOGIC
START
STOP
LOGIC
SDA
SCL
WOR O
ADDRESS
COUNTER
COUNTER
LOAD
INC
R/W
32
8
2
5
32
CK
PIN
V
CC
TEST INPUT
7
1
2
3
4
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
15
14
13
DIN1
ERROR
DATAOUT
LRCK
BCK
FSI28
FSI28
CKOUT
DQSY/LD
SRDT/DO
SWDT/DI
SWDT/DI
XLAT/CE
SCLK/CL
TEST2
DIN2
E/DOUT
VDD
R
VIN
VCO
XMODE
GND
CKSEL
AVOCK
TEST1
INPUT
PLL
DATA
DEMODULATION
LOCK ERROR
DET
MUTE
OUTPUT
TIMING
3
C BIT
DET
SUB-Q
DET
MICOM
INTERFACE
TEST
3
16
1
2
3
4
5
6
7
8
15
14
13
12
2C3
2C2
B
A
B
A
2C1
2C0
2Y
1C3
1C2
1C1
1C0
1Y
V
CC
2C3
2C2
2C1
2C0
DATA INPUTS
DATA INPUTS
STROBE
2G
STROBE
1G
B
SELECT
1C3
1C2
1C1
1C0 OUTPUT
1Y
GND
A
SELECT
OUTPUT
2Y
2G
11
10
9
1G
B
A
B
A
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