Sony Walkman PCM-M1 Service Manual page 29

IC508 AK6420HM-E2
Vcc
8
INSTRUCTION INSTRUCTION
DI
REGISTER DECODE.
3
CONTROL
AND
3
CLOCK
GENERATION
CS
1
SK
2
RESET
6
5 GND
IC518 MB88347PFV
DI
14
12BIT SHIFT REGISTER
CLK
D1
13 D0 D2 D3 D4
8
D0 D7
1
8BIT
LATCH
9 VCC
8BIT
R-2R
D/A CONV.
VDD
8
16
GND
IC503 MB3796
SCP 1
TRIANGLE
TC 2
GENERATOR
V REF 3
RT 4
5
SB
REGULATOR
6
VAO 1
VI 1– 7
VI 1+ 8
9
RB 1
10
VC 1
CB1 B 11
CB1 A 12
DATA
REGISTER
16
R/W AMPS
AND
AUTO
ERASE
ADD.
DECODER
7 14
BUFFERS
VPP SW
V REF
D5 D6 D7 D9 D10 D11
D8
ADDRESS
DECODER
1 8
8
D0 D7
8
8BIT
LATCH
8BIT
R-2R
D/A CONV.
. .
15 2 7 10
AO1 AO8
24 VCC
23 CT 1
22 CT 2
21 GND
20 DTC
VAO 2
19
18 VI 2–
VI 2+
17
16 VC 2
15 RB 2
13 CB2 A
14 CB2 B
DO
4
16
EEPROM
2048BIT
(128x16)
14
VPP
GENERATOR
RDY/BUSY
7
IC310 TK15325MT-L
DO
1ch
11
4
LD
12
1ch
2
2ch
9
2ch
11
GND
1
6
VSS
IC306 DS1802E
GND 1
2
COUT
3
CLK
4
DIN
5
CS
6
ZCEN
7
MODE
W0 8
POS64
L0 9
65-TO-1
MULTIPLEXER
H0 10
POS0
– 32 –
1
Vcc
+
1ch OUT
A 3
+
B
1KEY
5
+
2ch OUT
A 10
+
2Key
B
8
VEE
12
20
19
18
COMMAND/CONTROL
17
UNIT
16
15
16-BIT
14
b0 b15
I/O SHIFT
REGISTER
13
POS0
12
65-TO-1
MULTIPLEXER
11
POS64
VCC
VU(UC1)
VD(DC1)
B0(UC0)
B1(DC0)
MUTE
AGND
H1
L1
W1