Read Sony MDS-JB940 Service Manual online
58
Pin No.
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 to 85
86 to 89
90
91
92
93
94 to 101
102 to 113
114
115
116
117
118
119 to 122
123
124
125
126
127
128
129
130
131
132
133
134
135
I/O
I
O
I
O
I
I
I
I
O
I/O
O
O
O
O
O
I
I
O
O
O
O
O
I
O
I
O
I
O
I
O
I
O
I/O
O
O
I
I
I
I/O
I
I
O
O
O
O
O
I
O
I
I
I
I
Description
Not used (fixed to High)
Microprocessor mode
Not used (fixed to High)
Microprocessor mode
(DSP)
Power supply ground
(DSP)
3.3 V power supply
EEP-ROM write protect
EEP data
Not used
Read signal output
Not used
Write signal output
EEP CLK
Disc reflection index detection switch
Protect switch
Chip select (Flash ROM)
Not used
Not used
Address bus
Address bus
3.3 V power supply
Address bus
Power supply ground
Address bus
Model identification
Flash ROM write-protect
3.3 V power supply
Address bus
Power supply ground
Address bus
Data bus
Keyboard clock ON/OFF
Not used
Keyboard data
REC VOL (B)
REC VOL (A)
Data bus
JOG (0)
JOG (1)
DA latch
OPT1/OPT2 selection
OPT1/OPT2 selection
Chip select for display
Not used
Power supply ground
DSP driver power control output
3.3 V power supply
OP voltage (current) detection
Not used
Not used
Pin Name
RDY
ALE
HOLD
HLDA
MNT2(XBUSY)
VSS
MNT1(SHCK)
VCC
EEP-WP
SDA(EEP)
BCLK
OE
BHE
WE
SCL(EEP)
REFRECT-SW
PROTECT-SW
CS0(FLASH)
CS1(SRAM)
CS2 (Dictionary ROM)
A20
A19
VCC
A18
VSS
A17 to 9
SEL3 to 0
WP(FLASH)
VCC
A8
VSS
A7 to A0
D15 to D4
KEYBD-CLK-CTRL
I2CBUSY
KEYBD-DAT
REC-VOL-B
REC-VOL-A
D3 to D0
JOG-0
JOG-1
LATCH(DA)
OPT1/OPT2
COAX/OPT
FL-CS
POWER(IIC)
VSS
STB
VCC
OP-LEVEL
NC
NC
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