Sony MXD-D40 Service Manual page 79

• MAIN BOARD IC801 M30803MG (MD MECHANISM CONTROLLER)
Pin No. Pin Name
1, 2 NC
3 LEVEL_L
4 LEVEL_R
5 to 7 NC
8 BYTE
9 CNVSS
10 XIN-T
11 XOUT-T
12 S·RST
13 XOUT
14 GND
15 XIN
16 VCC
17
NMI
18 DQSY
19 P.DOWN
20 SQSY
21 to 24 NC
25 XINT
26 NC
27 NC (CLIP)
28 NC
29 IIC CLK
30 IIC DATA
31
SWDT
32 SRDT
33 SCLK
34
RST1
35 NC (CLIP)
36 NC (CLIP)
37 NC (CLIP)
38 to 40
NC
41 EPM
42, 43
NC
44 PROTECT
45 SCL
46 CE
47 EEP-WP
48 XBUSY
49 OUT-SW
50 XLATCH
I/O
O Not used (open)
O L-ch level output to the CD mechanism controller (IC800)
O R-ch level output to the CD mechanism controller (IC800)
O Not used (open)
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 Not used (open)
O Sub system clock output terminal Not used (open)
System reset signal input "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 (+3.5V)
I Non-maskable interrupt input terminal "L" active (fixed at "H" in this set)
Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2662R (IC151)
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"
Subcode Q sync (SCOR) input from the CXD2662R (IC151)
I
"L" is input every 13.3 msec Almost all, "H" is input
O Not used (open)
I Interrupt status input from the CXD2662R (IC151)
O Not used (open)
O Serial data output terminal Not used (open)
O Not used (open)
Communication data reading clock signal output or transfer clock signal input with the CD
I/O
mechanism controller (IC800)
I/O
Communication data bus with the CD mechanism controller (IC800)
O
Writing data output to the CXD2662R (IC151)
I
Reading data input from the CXD2662R (IC151)
O
Serial clock signal output to the CXD2662R (IC151)
O
Not used (open)
O Serial clock signal output terminal Not used (open)
O Not used (open)
I Serial data input terminal Not used (open)
O Not used (open)
I Not used (fixed at "L")
O Not used (open)
I
Rec-proof claw detect input from the protect detect switch (S102-2) "H": write protect
O
Clock signal output to the EEPROM (IC195)
I Not used (fixed at "H")
O
Writing protect signal output to the EEPROM (IC195)
I
Busy signal input from the CXD2662R (IC151)
Detection input from the loading-out detect switch (S103)
I
"L" at a load-out position, others: "H"
O Serial data latch pulse signal output to the CXD2662R (IC151)
Description
MXD-D40
79