Ic504 Cxk58257Bm (Digital Board); Ic512 Mc74Hc175F (Digital Board); Ic511 Sn74Hc153Ans; Ic516 M51953Bfp (Digital Board) - Sony PCM-R500 Service Manual

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3 7 63 1515 0

IC504 CXK58257BM (DIGITAL board)

A14 1
A13
•
A12 2 •
A11
•
A9
BUFFER
•
A8
•
•
A7 3
A6 4 •
A5
5
A10
•
A4 6
•
A3 7
BUFFER
A2 8 •
9 •
A1
10
A0
I/01 11
OE
I/02 12
BUFFER
WE
I/03 13
CE
TE
L 13942296513
14
GND

IC511 SN74HC153ANS

(DIGITAL board)
STROBE A
VCC
2G SELECT
16 15 14
1G
1C3 1C2 1C1 1C0
2
1 3
STROBE B 1C3 1C2 1C1 1C0
1G SELECT
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http://www.xiaoyu163.com
28
WE
27
• •
A13
MEMORY
ROW 26
MATRIX
• •
DECODER
512x512
• •
A8
25
A9
24
A11
23
• • •
OE
22
A10
21
I/O GATE
COLUMN
CE
20
DECODER
19
18
17
I/O BUFFER
16
15
DATA INPUTS
OUTPUT
2C3 2C2 2C1 2C0
2Y
9
13 12 11 10
2C3 2C2 2C1 2C0 2Y
2G
B B A A
B B A A
1Y
4 5
6 7 8
OUTPUT GND
1Y
DATA INPUTS
x ao
y
i
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8

IC512 MC74HC175F (DIGITAL board)

16
VCC
WE
CLR
A13
A8
CLR
A9
A11
1
OE
A10

IC516 M51953BFP (DIGITAL board)

CE
NC
8
I/08
I/07
I/06
I/05
Q Q
1.25V
I/04
3 6 7 1 3
1
NC
IC517 AT24C01A-10 SC (DIGITAL board)
8 7 6 5
START
STOP
LOGIC
LOAD
COMP
DEVICE
ADDRESS
COMPARATOR
R/W
DIN
DOUT
1 2 3 4
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.
– 70 –
2 9 9 4 2 8
9
15 14 13 12 11 10
Q Q Q Q
CLR
CK
D D CK
CK D D CK
CLR
Q Q
Q Q
2 3 4 5 6 7 8
DELAY
VDD OUTPUT
CAPACITANCE
7 6 5
1 5 0 5 8 2 9 9 4
2 3 4
NC NC GND
SERIAL
EN
CONTROL
H.V. PUMP/TIMING
LOGIC
DATA REGISTER
LOAD INC
DATA WORD
2
E PROM
ADDRESS/
COUNTER
Y DEC SERIAL MIX
DOUT/ACK
LOGIC
m
co
9 9
2 8 9 9