– 41 –
Pin No.
Pin Name
I/O
Pin Description
1, 2
DAOUT0, DAOUT1
O
Not used (open)
3 – 5
KEY0 – KEY2
I
Key input terminal (A/D input) Not used (fixed at “H”)
6
CHACK-IN
I
Detection input from the disc chucking-in detect switch “L: chucking
Not used (fixed at “H”)
7
PACK-IN
I
Detection input from the loading-in detect switch
“L” at a load-out position, others: “H” Not used (fixed at “H”)
8
PACK-OUT
I
Detection input from the loading-out detect switch (S602)
“L” at a load-out position, others: “H”
9, 10
NC
—
Not used (fixed at “L”)
11
AVSS
—
Ground terminal
12
XINT
I
Interrupt status input from the CXD2654R (IC121)
13
PDOWN
I
Power down detection signal input terminal “L”: power down, normally: “H”
14
NC
—
Not used (fixed at “L”)
15
SQSY
I
Subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec Almost all, “H” is input
16
DQSY
I
Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec Almost all, “H” is input
17 – 19
NC
—
Not used (fixed at “L”)
20
SYS-RST
I
System reset signal input from the reset switch (Q604) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
21
TEST
I
Setting terminal for the test mode Not used (fixed at “L”)
22
+3.3V
—
Power supply terminal (+3.3V)
23
VBAT
I
Power supply for the internal real time clock and RAM
24
XOUT-T
O
Sub system clock output terminal (32.768 kHz)
25
XIN-T
I
Sub system clock input terminal (32.768 kHz)
26
GND
—
Ground terminal
27
XOUT
O
Main system clock output terminal (12 MHz)
28
XIN
I
Main system clock input terminal (12 MHz)
29
EXMEM
I
Setting terminal external ROM mode or internal ROM mode “L”: internal ROM mode
(fixed at “L”)
30
S1
—
Not used (open)
31
NC
—
Not used (fixed at “L”)
32
SENS
I
Internal status (SENSE) input from the CXD2654R (IC121)
33
SHOCK
I
Track jump detection signal input from the CXD2654R (IC121)
34, 35
NC
—
Not used (fixed at “L”)
36
STB
O
Relay drive signal output for the power on/off “L”: standby mode, “H”: relay on
37
REC P
I
Detection input from the recording position detect switch (S601) “L” active
38
PB P
I
Detection input from the playback position detect switch (S604) “L” active
39
LD-LOW
O
Loading motor drive voltage control signal output for the loading motor driver (IC602)
“H” active
40
NC
—
Not used (open)
41
MNT2 (XBUSY)
I
Busy status signal input from the CXD2654R (IC121)
42
MNT3 (SLOCK)
I
Spindle servo lock status monitor signal input from the CXD2654R (IC121)
43
LED0
O
LED drive signal output terminal “L”: LED on Not used (open)
44, 45
NC
—
Not used (fixed at “L”)
46
RST-LOW
—
Not used (open)
47
GND
—
Ground terminal
• DG BOARD IC601 RU8X13MF-0102 (MD MECHANISM CONTROLLER)
