Read Sony SDP-EP70 / SDP-EP90ES Service Manual online
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Pin No.
Pin Name
I/O
Function
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
Write enable output
Read enable output
Ground for bus control
Not used
Debug serial clock/Chip status 1 input/output
Debug request input
Debug serial output
Debug serial input/Chip status 0 input/output
Bus strobe output (Not used)
X/Y select output
Ground for address bus
Data memory select output
Power supply for address bus
Program memory select output
Adress data output to S-RAM
Ground for address bus
Adress data output to S-RAM
Power supply for interrupt/mode control
Ground for interrupt/mode control
Adress data output to S-RAM
Power supply for address bus
Ground for address bus
Adress data output to S-RAM
Ground for address bus
Adress data output to S-RAM
Power supply for address bus
Adress data output to S-RAM
Ground for address bus
Not used
Data input/output to S-RAM
Ground for data bus
Data input/output to S-RAM
Power supply for data bus
Data input/output to S-RAM
WR
RD
GNDC
NC
DSCK/OS1
DR
DSO
DSI/OS0
BS
X/Y
GNDN
DS
VCCN
PS
A0
A1
GNDN
A2
A3
A4
VCCQ
GNDQ
A5
VCCN
GNDN
A6
A7
A8
A9
GNDN
A10
A11
A12
VCCN
A13
GNDN
A14
A15
D0
D1
GNDD
D2
D3
VCCD
D4
D5
O
O
–
–
I/O
I
O
I/O
O
O
–
O
–
O
O
O
–
O
O
O
–
–
O
–
–
O
O
O
O
–
O
O
O
–
O
–
O
O
I/O
I/O
–
I/O
I/O
–
I/O
I/O
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