35
35
CDX-M770
tuner unit
(TUX201)
DISC IN SW board
SWITCH board
DISPLAY board
KEY board
SERVO board
LIMIT SW board
MAIN board
SUB (CD) board
4-2. CIRCUIT BOARDS LOCATION
Pin No.
Pin Name
I/O
Pin Description
83
STBY
I
Hardware standby signal
84
VCC
—
Power supply pin (+5 V)
85
XTAL
—
Crystal oscillator (18.432 MHz)
86
EXTAL
—
Crystal oscillator (18.432 MHz)
87
VSS
—
Ground
88
PF7
O
Not used. (Open)
89
VCC
—
Power supply pin (+5 V)
90 – 96
PF6 – PF0
O
Not used. (Open)
97
UNI SO
O
SONY BUS serial data output
98
UNI SI
I
SONY BUS serial data input
99, 100
VSS
—
Ground
101
UNI CKI
I
SONY BUS serial clock input
102
P53
O
Not used. (Open)
103
AVCC
—
Power supply pin (+5 V)
104
VREF
—
Power supply pin (+5 V)
105 – 112
P40 – P47
I
Connecting to ground in this set.
113
AVSS
—
Ground
114
VSS
—
Ground
115 – 122
P17 – P10
O
Not used. (Open)
123
MD0
I
Mode setting 0
124
MD1
I
Mode setting 1
125
MD2
I
Mode setting 2
126 – 128
PG0 – PG2
O
Not used. (Open)
Содержание CDX-M770 - Fm/am Compact Disc Player
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