Sony CDP-XB820 Service Manual page 15

Pin No. Pin Name
36
MODEL.SEL2
37 AVSS
38
RST
39
EXTAL
40
XTAL
41
VSS
42
TX
43
TEX
44 VDD (+5V)
45
VFDP (–30V)
46
XSEL
47
REINIT
48 RFGF
49 to 66
OPEN
67 to 87
S21 to S1
88
1G
89
VDD (+5V)
90 to 100
2G to 12G
I/O
I Destination setting terminal (fixed at "L")
— Ground terminal (for A/D converter)
System reset signal input from the reset signal generator (IC930) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Main system clock input terminal (8 MHz)
O Main system clock output terminal (8 MHz)
— Ground terminal
O Sub system clock output terminal Not used (open)
I Sub system clock input terminal Not used (fixed at "L")
— Power supply terminal (+5V)
— Power supply terminal (–30V) (for FL drive)
O Not used (open)
O Not used (open)
O Laser power hold control signal output to the CXA2568M (IC103) "H": hold on
O Not used (open)
O Segment drive signal output to the fluorescent indicator tube (FL801) "H": goes on
O Grid drive signal output to the fluorescent indicator tube (FL801) "H": goes on
— Power supply terminal (+5V)
O Grid drive signal output to the fluorescent indicator tube (FL801) "H": goes on
Function
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