Read Sony CMT-PX333 / HCD-PX333 Service Manual online
87
HCD-PX333
Pin No.
Pin Name
I/O
Description
74
VCC3
—
Power supply terminal (+3.3V)
75
A18
O
Address signal output Not used (open)
76
VSS3
—
Ground terminal
77 to 85
A17 to A9
O
Address signal output Not used (open)
86 to 89
SEL3 to SEL0
I
Model destination setting input terminal
90
WP
O
Writing protect signal output Not used (fixed at “L”)
91
VCC4
—
Power supply terminal (+3.3V)
92
A8
O
Address signal output Not used (open)
93
VSS4
—
Ground terminal
94 to 100
A7 to A1
O
Address signal output Not used (open)
102 to 113
Two-way data bus Not used (open)
114
CLIP SEL
O
Not used (open)
115
I2CBUSY
I/O
Busy signal input/output for the IIC bus
116
DALOCK
I
Lock signal input from the D/A converter (IC1006)
117
LINE-MUTE
O
Audio line muting on/off control signal output
118
ADPDWN
O
Power down detection signal output to the A/D converter (IC1005)
119 to 122
D3 to D0
I/O
Two-way data bus Not used (open)
123
SPDIF-CUT
O
MD/CD digital input selection signal output terminal Not used (open)
124
OPTSEL
O
CD/optical digital input selection signal output to the digital signal selector (IC1008)
125 to 129
—
O
Not used (open)
130
VSS5
—
Ground terminal
131
—
O
Not used (open)
132
VCC5
—
Power supply terminal (+3.3V)
133
OP-LEVEL
I
Optical pick-up voltage input from the automatic power control circuit
134 to 139
—
O
Not used (open)
140
AVSS
—
Ground terminal (for analog system )
141
—
O
Not used (open)
142
VREF
I
Reference voltage (+3.3V) input terminal (for A/D converter)
143
AVCC
—
Power supply terminal (+3.3V) (for analog system )
144
—
O
Not used (open)
LB
D15 to D4
I/O
Not used (open)
O
101
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