Sony MXD-D400 Service Manual page 80

MXD-D400
• MAIN BOARD IC12 M30624MGN-A23FP (MD MECHANISM CONTROLLER)
Pin No. Pin Name
1 FLDT
2 FLCK
3 LEVEL-L
4 LEVEL-R
5 to 7 OPEN
8 BYTE
9 CNVSS
10 XIN-T
11 XOUT-T
12 SRST
13 XOUT
14 GND
15 XIN
16 VCC
17
NMI
18 DQSY
19 PDOWN
20 SQSY
21 KBCLK
22
KBDATA
23 IICBUSY
24
A1OUT
25 XINT
26
BEEP
27
XELT
28
IICPOWER
29 IICCLK
30 IICDATA
31 SWDT
32 SRDT
33 SCLK
34
KBCLKCTL
35 L3DATAO
36 L3DATAI
37 L3CLK
38 L3MODE
39
ADARST
40 ADALATCH
41 EPM
42
OCLIPSEL
43 OPEN
44 PROTECT
45 SCL (EEP)
80
I/O
O
Display serial data output terminal Not used
O Display serial data transfer clock signal output terminal Not used
O
L-channel level output to the system controller
O
R-channel level output to the system controller
— 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)
O Sub system clock output terminal (32.768 kHz)
System reset signal input from the system controller and regulator "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 MD DSP
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 MD DSP
I
"L" is input every 13.3 msec Almost all, "H" is input
O Not used
O Not used
O
Busy signal output for the I2C bus "L" active Not used
—
Not used
I Interrupt status input from the MD DSP
O Beep sound drive signal output terminal Not used
O Not used
O Not used
I IIC data transfer clock signal input from the system controller
I/O
IIC data bus with the system controller
O
Writing data output to the MD DSP
I
Reading data input from the MD DSP
O Serial clock signal output to the MD DSP
O Not used
O
L3 bus data output terminal Not used
I
L3 bus data input terminal Not used
O L3 bus data transfer clock signal output terminal Not used
O
L3 bus mode control signal output terminal Not used
O System reset signal output terminal Not used
O
Serial data latch pulse output terminal Not used
I Not used
O
Not used
— Not used
Detection input from the disc reflection rate detect switch
I
"L": high reflection rate disc, "H": low reflection rate disc
O
Serial clock signal output to the EEPROM
Description