Sony MXD-D4 - Page 79

79
Pin No. Pin Name I/O Description
74 VCC
— Power supply terminal (+3.5V)
75 A18 O
Address signal output to the flash ROM (IC802)
76 VSS
— Ground terminal
77 to 85 A17 to A9 O
Address signal output to the flash ROM (IC802)
86 SEL3
I Not used (open)
87 SEL2
I Model setting input terminal (fixed at “L” in this set)
88, 89 SEL1, SEL0
I Destination setting terminal (fixed at “L” in this set)
90 WP O
Writing protect signal output to the flash ROM (IC802)
91 VCC
— Power supply terminal (+3.5V)
92 A8 O
Address signal output to the flash ROM (IC802)
93 VSS
— Ground terminal
94 to 100 A7 to A1 O
Address signal output to the flash ROM (IC802)
101 XLB (A0)
— Not used (open)
102 to 113 D15 to D4 I/O
Two-way data bus with the flash ROM (IC802)
114 CLIP SEL
O Not used (open)
115 I2CBUSY
I/O Not used (open)
116 SPDIF LOCK
I Lock signal input from the D/A converter (IC300)
117 LINE MUTE O
Audio line muting on/off control signal output
118 ADRESET
O Not used (open)
119 to 12
2
D3 to D0 I/O
Two-way data bus with the flash ROM (IC802)
123 SPDIF MUTE O
MD/CD digital input control signal output to the MD/CD selector (IC307)
124 NC
O Not used (open)
125 TEST 2
I Input terminal for the test Not used (open)
126 TEST 3
I Input terminal for the test Not used (open)
127 TEST 4
I Input terminal for the test Not used (open)
128, 129 NC
— Not used (open)
130 VSS
— Ground terminal
131 NC
O Not used (open)
132 VCC
— Power supply terminal (+3.5V)
133 IOP
I Optical pick-up voltage input from the automatic power control circuit
134 to 139 NC
O Not used (open)
140 AVSS
— Ground terminal (for analog system )
141
NC O Not used (open)
142 VREF I Reference voltage (+3.5V) input terminal (for A/D converter)
143 AVCC
— Power supply terminal (+3.5V) (for analog system )
144 NC
O Not used (open)