– 28 –
Pin No.
Pin Name
I/O
Description
37
SLVCD
I
Not used (fixed at “H”)
38
AVLS
I
AVLS (Automatic Volume Limiter System) switch (S803) input terminal
“L”: normal mode, “H”: limit mode
39
HOLD
I
HOLD switch (S804) input terminal “L”: hold ON, “H”: hold OFF
40
EX BATT
I
External battery detection signal input terminal “H”: external battery
41
DRVRST
O
Control signal output to the spindle motor driver (IC402)
42
XOE
O
Optical pick-up power ON/OFF control signal output terminal “L”: ON
43
XLAT
O
Serial data latch pulse signal output to the CXD3027R (IC601)
44
XSOE
O
Serial data output enable signal output to the CXD3027R (IC601)
45
DRVLT
O
Latch signal output to the spindle motor driver (IC402)
46
XPOWLT
O
Latch signal output to the power control (IC401)
47
XDOUTON
O
Digital output LED control signal output terminal “L”: ON
48
XAPC OFF
O
APC mute signal output terminal “L”: mute
49
NC
—
Not used (open)
50 to 64
SEG14 to SEG0
O
Segment drive signal output terminal for the display Not used (open)
65 to 68
COM3 to COM0
O
Common drive signal output terminal for the display Not used (open)
69 to 71
V3 to V1
O
Bias signal output terminal for the display driver Not used
72, 73
C1, C0
O
Capacitor connected terminal for the display driver voltage-up (for bias)
74
STOP
I
Not used (fixed at “L”)
75
TEST
I
Test terminal for internal connection (normally: fixed at “L”)
76
XHPSW
O
ON/OFF control signal output to the headphone amp (IC351) “L”: ON
77
XLIGHT
O
Back light control signal output terminal for the display Not used (fixed at “L”)
78
RESET
I
System reset signal input from the power control (IC401) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
79
XIN
I
System clock input from the CXD3027R (IC601) (4.2336MHz: 1/4 dividing of 16.9MHz)
80
XOUT
O
System clock output terminal Not used (open)
