Sony MDS-M100 Service Manual page 34

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