Sony MXD-D4 Service Manual page 79

Pin No. Pin Name
74 VCC
75 A18
76 VSS
77 to 85 A17 to A9
86 SEL3
87 SEL2
88, 89 SEL1, SEL0
90 WP
91 VCC
92 A8
93 VSS
94 to 100 A7 to A1
101 XLB (A0)
102 to 113 D15 to D4
114 CLIP SEL
115 I2CBUSY
116 SPDIF LOCK
117 LINE MUTE
118 ADRESET
119 to 122 D3 to D0
123 SPDIF MUTE
124 NC
125 TEST 2
126 TEST 3
127 TEST 4
128, 129 NC
130 VSS
131 NC
132 VCC
133 IOP
134 to 139 NC
140 AVSS
141
NC
142 VREF
143 AVCC
144 NC
I/O
— Power supply terminal (+3.5V)
O Address signal output to the flash ROM (IC802)
— Ground terminal
O
Address signal output to the flash ROM (IC802)
I Not used (open)
I Model setting input terminal (fixed at "L" in this set)
I Destination setting terminal (fixed at "L" in this set)
O
Writing protect signal output to the flash ROM (IC802)
— Power supply terminal (+3.5V)
O
Address signal output to the flash ROM (IC802)
— Ground terminal
O
Address signal output to the flash ROM (IC802)
— Not used (open)
I/O
Two-way data bus with the flash ROM (IC802)
O Not used (open)
I/O Not used (open)
I Lock signal input from the D/A converter (IC300)
O
Audio line muting on/off control signal output
O Not used (open)
I/O
Two-way data bus with the flash ROM (IC802)
O
MD/CD digital input control signal output to the MD/CD selector (IC307)
O Not used (open)
I Input terminal for the test Not used (open)
I Input terminal for the test Not used (open)
I Input terminal for the test Not used (open)
— Not used (open)
— Ground terminal
O Not used (open)
— Power supply terminal (+3.5V)
I Optical pick-up voltage input from the automatic power control circuit
O Not used (open)
— Ground terminal (for analog system )
O Not used (open)
I Reference voltage (+3.5V) input terminal (for A/D converter)
— Power supply terminal (+3.5V) (for analog system )
O Not used (open)
Description
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