Sony CDX-V7800X Service Manual page 22

Pin No. Pin Name
58 ANT ON
59 EZ SEL
60 POWER ON
61 – 63 NC
64 ST IN
65 LCD CK0
66 LCD SO
67 NC
68 MSC
69 MSI
70 MSO
71 MSRQ
72 MCS
73 NC
74 VREF
75 GND1
76 X OUT
77 X IN
78 BU IN
79 VDD1
80 RESET
22
I/O
O Car antenna control output
I Rotary commander shift key input
O System power on/off control and power amplifier control output
— Not used. (Open)
I FM stereo indicator input (L: FM STEREO ON, H: FM MONO ON)
O Clock data output for LCD driver IC.
O Serial data output for LCD driver IC.
— Not used. (Open)
O Serial clock output to slave microcomputer IC.
I Serial input from slave microcomputer IC.
O Serial output to slave microcomputer IC.
I Serial request input from slave microcomputer IC.
O Chip select output to slave microcomputer IC.
— Not used. (Open)
— Reference power supply voltage pin
— Ground
O Crystal oscillator output (4.5 MHz)
I Crystal oscillator input (4.5 MHz)
I Back-up power supply input
— Power supply pin
I Reset input
Pin Description