Sony Walkman PCM-M1, Service Manual

Page: 29 / 46

INSTRUCTION
REGISTER
INSTRUCTION
DECODE.
CONTROL
AND
CLOCK
GENERATION
DATA
REGISTER
R/W AMPS
AND
AUTO
ERASE
EEPROM
2048BIT
(128x16)
ADD.
BUFFERS
DECODER
VPP SW
VPP
GENERATOR
V REF
7
RDY/BUSY
4
DO
8
3
1
2
6
5 GND
RESET
SK
CS
DI
Vcc
3
7
14
16 16
14
8BIT
LATCH
8BIT
D/A CONV.
R-2R
D0 D7
8BIT
LATCH
8BIT
D/A CONV.
R-2R
D0 D7
12BIT SHIFT REGISTER
ADDRESS
DECODER
14
13
9
8
16 15 2 7 10 1
11
12
DO
LD
DI
CLK
VCC
VDD
GND
AO1 AO8
VSS
D0 D1 D2 D3 D4 D5 D6 D7 D8
D9 D10 D11
8 1
8
1
8
8
. .
1
2
3
4
5
6
7
8
9
10
11
12 14
13
15
16
17
18
19
20
21
22
23
24 SCP
TC
V REF
RT
SB
VAO 1
VI 1–
VI 1+
RB 1
VC 1
CB1 B
CB1 A
VCC
CT 1
CT 2
GND
DTC
VAO 2
VI 2–
VI 2+
VC 2
RB 2
CB2 B
CB2 A
TRIANGLE
GENERATOR
REGULATOR
+
+
+
+
6 12
VEE GND
11
9
8
10
2
4
1
3
5
Vcc
1ch
1ch
A
B
1ch OUT
1KEY
2ch
2ch
A
B
2ch OUT
2Key
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
COMMAND/CONTROL
UNIT
b15 b0
16-BIT
I/O SHIFT
REGISTER
65-TO-1
MULTIPLEXER 65-TO-1
MULTIPLEXER
POS64 POS0
POS64
POS0
GND
COUT
CLK
DIN
CS
ZCEN
MODE
W0
L0
H0
VCC
VU(UC1)
VD(DC1)
B0(UC0)
B1(DC0)
MUTE
AGND
H1
L1
W1
IC508 AK6420HM-E2
IC518 MB88347PFV
IC503 MB3796
IC310 TK15325MT-L
IC306 DS1802E
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