Sony HCD-XG60 Service Manual page 54

HCD-XG60/XG500
Pin No. Pin Name
43
GR-1
44 to 66 SEG-1 to SEG-23
67 LED STANDBY
68 VKK
69 VDD
70 XIN
71 VSS
72 XOUT
73 RESET
74 JOG A
75 JOG B
76 TEST
77 —
78 I2C DATA
79 I2C CLK
80 D-SW
54
I/O
O
Grid drive signal output to the fluorescent indicator tube (FL601)
O
Segment drive signal output to the fluorescent indicator tube (FL601)
O LED drive signal output of the I/1 indicator (D601) "H": LED on
—
Power supply terminal (–35V) (for fluorescent indicator tube drive)
—
Power supply terminal (+5V)
I
System clock input terminal (12.5 MHz)
— Ground terminal
O
System clock output terminal (12.5 MHz)
System reset signal input from the reset signal generator (IC801) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I
Jog dial pulse input from the rotary encoder (S763 JOG DIAL) (A phase input)
I Jog dial pulse input from the rotary encoder (S763 JOG DIAL) (B phase input)
I
Connected to ground
—
Not used (open)
I/O
Communication data bus with the system controller (IC501)
Communication data reading clock signal input or transfer clock signal output with the system
I/O
controller (IC501)
I CD door open/close detection switch (S742) input terminal "L": close, "H": open
Description