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MAIN BOARD IC501 M30620MC-400FP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
NC
O
Not used (open)
3
C1
O
Monitor output terminal for the test C1 error rate is output when test mode
4
ADER
O
Monitor output terminal for the test ADER is output when test mode
5
SQSY
I
Subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec Almost all, “H” is input
6
RMC
I
Remote control signal input from the remote control receiver (IC781)
7
A1 IN
I
Sircs remote control signal input of the CONTROL A1 Not used
8
BYTE
I
External data bus line byte selection signal input “L”: 16 bit, “H”: 8 bit (fixed at “L”)
9
CNVSS
—
Ground terminal
10
XT-IN
I
Sub system clock input terminal (32.768 kHz) Not used (fixed at “L”)
11
XT-OUT
O
Sub system clock output terminal (32.768 kHz) Not used (open)
12
S.RST
I
System reset signal input from the reset signal generator (IC406) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13
XOUT
O
Main system clock output terminal (10 MHz)
14
GND
—
Ground terminal
15
XIN
I
Main system clock input terminal (10 MHz)
16
+3.3V
—
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt input terminal (fixed at “H” in this set)
18
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
19
P.DOWN
I
Power down detection signal input terminal “L”: power down, normally: “H”
20
KEYBOARD CLK
I
Not used (open)
21
KEYBOARD DATA
I
Not used (open)
22
BEEP OUT
O
Beep sound drive signal output terminal Not used (open)
23
XINT
I
Interrupt status input from the CXD2654R (IC121)
24 to 27
NC
O
Not used (open)
28
L3-CLOCK
O
Serial data transfer clock signal output to the A/D, D/A converter (IC301)
29
NC
O
Not used (open)
30
L3-DATA
O
Serial data output to the A/D, D/A converter (IC301)
31
SWDT
O
Writing data output to the CXD2654R (IC121)
32
SRDT
I
Reading data input from the CXD2654R (IC121)
33
SCLK
O
Serial clock signal output to the CXD2654R (IC121)
34
FLCS
O
Chip select signal output to the FL/LED driver (IC761)
35
FLDATA
O
Serial data output to the FL/LED driver (IC761)
36
NC
O
Not used (open)
37
FLCLK
O
Serial data transfer clock signal output to the FL/LED driver (IC761)
38 to 40
NC
O
Not used (open)
41
NC
I
Not used (fixed at “L”)
42
JOG1
I
JOG dial pulse input from the rotary encoder (S713
=
AMS
+
) (B phase input)
43
JOG0
I
JOG dial pulse input from the rotary encoder (S713
=
AMS
+
) (A phase input)
44
NC
O
Not used (open)
45
A1 OUT
O
Sircs remote control signal output of the CONTROL A1 Not used
46
NC
I
Not used (fixed at “L”)
47
L3-MODE
O
L3 mode control signal output to the A/D, D/A converter (IC301)
48
DA RST
O
Reset signal output for the A/D, D/A converter “L”: reset Not used (open)
49
MUTE
O
Audio line muting on/off control signal output terminal “L”: line muting on
