Sony MXD-D4 - Page 76

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), RECz,
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