Sony MXD-D3 Service Manual page 67

• MAIN BOARD IC501 M30625MGA-A50GP (CD MECHANISM CONTROL)
Pin No. Pin Name
1 NC
2 LEVEL R
3 LEVEL L
4, 5 NC
6 CNVSS
7, 8 NC
9 RESET
10 XOUT
11 VSS
12 XIN
13 VCC
14
NMI
15 NC
16 SCOR
17 LPH
18 XSEL
19 AMUTE
20, 21 NC
22 I2CCLK
23 I2CDATA
24 TXD1
25 RXD1
26 CLK1
27 RTS1
28 NC
29
SUBQ
30
SQCLK
31 to 33 NC
34 SPDL MUTE
35 DATA
36 CLK
37 XLT
38
SENSE
39 LDON
40
1/4 SW
41
8/12 SW
42 BDSW1
43
BDSW2
I/O
O Not used (open)
O
R-ch level output to the system controller (IC601)
O
L-ch level output to the system controller (IC601)
O
Not used (open)
— Ground terminal
O
Not used (open)
System reset signal input from the reset signal generator (IC906) "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 Fixed at "H" in this set
O
Not used (open)
Subcode sync (S0+S1) detection signal input from the CXD2585Q (IC101) on the CD block
I
"H": active
O Laser power control signal output to the CXD2585Q (IC101) on the CD block "H" active
O
Operation mode select signal output to the CXD2585Q (IC101) on the CD block "H" active
Analog muting on/off control signal output to the CXD2585Q (IC101) on the CD block
O
"H": muting on
O
Not used (open)
Communication data reading clock signal input or transfer clock signal output with the system
I/O
controller (IC601)
I/O
Communication data bus with the system controller (IC601)
O
Not used (open)
O
Not used (open)
O
Not used (open)
O
Not used (open)
O Not used (open)
I
Subcode Q data input from the CXD2585Q (IC101) on the CD block
Subcode Q data reading clock signal output to the CXD2585Q (IC101) on the CD block
O
"L": active
O
Not used (open)
O
Spindle motor muting control signal outputto the spindle motor drive (IC191) on the CD block
O Serial data output to the CXD2585Q (IC101) on the CD block
O
Serial data transfer clock signal output to the CXD2585Q (IC101) on the CD block "L" active
O
Serial data latch pulse output to the CXD2585Q (IC101) on the CD block "L" active
I Internal status detection monitor input from the CXD2585Q (IC101) on the CD block
O Laser on/off control signal output to the CXA2568M (IC131) "H": laser on
O Disc speed selection signal output to the BU4053BCFV (IC182) on the CD block
O Disc size selection signal output to the BU4053BCFV (IC182) on the CD block
O BD selection signal output Not used (open)
O BD selection signal output Not used (open)
Description
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