Sony MXD-D40 Service Manual page 76

MXD-D40
• MAIN BOARD IC800 M30624MGA-A54FP (SYSTEM CONTROLLER (CD MECHANISM CONTROLLER))
Pin No. Pin Name
1 CD-DATA
2 CD-CLK
3 XLT
4 SIRCS
5 NC
6
SQ-DATA
7
S-QCLK
8 BYTE
9 CNVSS
10 HOLD
11 SENS
12 RESET
13 X-OUT
14 VSS
15 X-IN
16 VCC
17
NMI
18 P_DOWN
19 SCOR
20 TP
21 EXT_ON
22 CONNECT
23 TP
24 LINE_MUTE
25 LDON
26 MD_RST
27 DAC_MUTE
28 TP
29 IIC-CLK
30 IIC-DATA
31 TXD1
32 RXD1
33 CLK1
34 RTS1
35
FLWITE
36 FLREAD
37 FLCLK
38 FLCS
39 FLREQ
40 FLBUSY
41 NC
42 1-4
43 1-2
44 8-12
76
I/O
O Serial data output to the CD block
O Serial data transfer clock signal output to the CD block
O Serial data latch pulse signal output to the CD block
I Remote control signal input from the remote control receiver (IC781)
O Not used (open)
I
Subcode Q data input from the CD block
O
Subcode Q data reading clock signal output to the CD block "L": active
I External data bus line byte selection signal input "L": 16 bit, "H": 8 bit (fixed at "L")
— Ground terminal
O Laser power control signal output terminal Not used (open)
I Internal status (SENSE) input from the CD block
System reset signal input from the reset signal generator (IC505) "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 (+5V)
I Non-maskable interrupt input terminal "L" active (fixed at "H" in this set)
I Power down detection signal input terminal "L": power down, normally: "H"
I Subcode sync (S0+S1) detection signal input from the CD block "H": active
O Not used (open)
I EXT_ON input terminal
I Connect signal input terminal
O Not used (open)
O Audio line muting on/off control signal output "L": line muting on
O
Laser diode on/off control signal output to the automatic power control circuit "H": laser on
O Reset signal output to the system controller (IC801)
O Muting control signal output to the D/A converter (IC300)
O Not used (open)
Communication data reading clock signal output or transfer clock signal input with the system
I/O
controller (IC801)
I/O
Communication data bus with the system controller (IC801)
O
Not used (open)
O Not used (open)
O
Not used (open)
O
Not used (open)
O Serial data output to the display controller (IC751)
I Not used (fixed at "L")
O Serial data transfer clock signal output to the display controller (IC751)
O Serial data transfer request signal output to the display controller (IC751)
O Serial data transfer request signal input terminal Not used (open)
O Serial data transfer permission signal input terminal Not used (open)
O Not used (fixed at "L")
O Disc speed selection (normal/4 speed) signal output to the CD block
O Disc speed selection (normal/2 speed) signal output to the CD block
O Disc size selection signal output to the CD block Not used (open)
Description