Read Sony CDX-M730 Service Manual online
26
CDX-M730
Pin No.
Pin Name
I/O
Pin Description
86
EXTAL
—
Crystal oscillator (18.43 MHz)
87
VSS
—
Ground pin
88
PF7
O
Not used. (Open)
89
VCC
—
Power supply pin (+5 V)
90 to 96
NCO
O
Not used. (Open)
97
UNI SO
O
Bus data signal output to bus interface (IC802)
98
UNI SI
I
Bus data signal input from bus interface (IC802)
99
VSS
—
Ground pin
100
VSS
—
Ground pin
101
UNI SCK
I
Bus clock signal input from system control (IC801)
102
P53
O
Not used. (Open)
103
AVCC
—
Power supply pin (+5 V)
104
VREF
—
Reference voltage (+5 V)
105 to 111
NIL
I
Connect to ground in this set.
112
SA IN
I
SA data signal input from electronic volume (IC305)
113
AVSS
—
Ground pin
114
VSS
—
Ground pin
115 to 122
NCO
O
Not used. (Open)
123
MD0 (H)
—
Mode pin
124
MD1 (H)
—
Mode pin
125
MD2 (H)
—
Mode pin
126 to 128
NCO
O
Not used. (Open)
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