– 42 –
Pin No.
Pin Name
I/O
Function
66 to 70
G1 to G5
O
Grid drive signal output to the fluorescent indicator tube (FL801)
71
VFDP
I
Reference voltage input for the fluorescent indicator tube (FL801)
72
VDD
—
Power supply terminal (+5V)
73
(VDD)
—
Power supply terminal (+5V)
74, 75
NC
O
Not used (open)
76
BUSOUT
O
Audio bus signal output for the audio bus interface
77
TEST PULSE
O
Table position detect pulse output terminal (for disc sensor alignment)
78
WRQ
I
Subcode Q synchronizing signal input from the DSP (IC102)
79
TSENS3
I
Disc table home position detect sensor (IC53) input terminal
80
TSENS2
I
Disc table flag detect sensor (IC52) input terminal