76
Pin No.
Pin Name
I/O
Description
86
DSENSE
I
Detection input from the disc in detect sensor on the CD mechanism block
“H”: disc detected Not used (open)
87
PRTC SW
I
Detection input from the CD tray door open/close detect switch input terminal
“L”: when CD lid is open, “H”: when CD lid is close Not used (open)
88
SOFT TEST
O
Not used (open)
89
KEY3
I
Key input terminal (A/D input) S741 to S746 (
x
(MD),
X
(MD),
H
(MD),
M
(MD), REC
z
,
A
EJECT keys input)
90
KEY2
I
Key input terminal (A/D input) S731 to S736 (
m
(MD), MENU/NO, YES, CD SYNCHRO
HIGH, CD SYNCHRO NORMAL,
A
OPEN/ CLOSE keys input)
91
KEY1
I
Key input terminal (A/D input) S721 to S729 (
l
AMS
L
PUSH ENTER (MD)
TIME/CHAR MD, PLAY MODE MD, INPUT, DISPLAY, PLAY MODE CD,TIME CD,
CLEAR (CD) keys input)
92
KEY0
I
Key input terminal (A/D input) S701 to S707 (
l
AMS
L
PUSH ENTER (CD),
x
(CD),
X
(CD),
H
(CD), REC-IT,
M
(CD),
m
(CD), I/
1
keys input)
93
SPEC IN
I
Destination setting terminal (fixed at “H” in this set)
94
LEVEL L
I
L-ch level input from the system controller (IC801)
95
LEVEL R
I
R-ch level input from the system controller (IC801)
96
AVSS
—
Ground terminal
97
TE
I
Tracking error signal input terminal Not used (open)
98
VREF
I
Reference voltage (+5V) input terminal (for A/D converter)
99
AVCC
—
Power supply terminal (+5V) (for analog system )
100
XRST
O
Reset signal output to the CD block
