67
•
MAIN BOARD IC501 M30625MGA-A50GP (CD MECHANISM CONTROL)
Pin No.
Pin Name
I/O
Description
1
NC
O
Not used (open)
2
LEVEL R
O
R-ch level output to the system controller (IC601)
3
LEVEL L
O
L-ch level output to the system controller (IC601)
4, 5
NC
O
Not used (open)
6
CNVSS
—
Ground terminal
7, 8
NC
O
Not used (open)
9
RESET
I
System reset signal input from the reset signal generator (IC906) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
10
XOUT
O
Main system clock output terminal (10 MHz)
11
VSS
—
Ground terminal
12
XIN
I
Main system clock input terminal (10 MHz)
13
VCC
—
Power supply terminal (+5V)
14
NMI
I
Non-maskable interrupt input terminal Fixed at “H” in this set
15
NC
O
Not used (open)
16
SCOR
I
Subcode sync (S0+S1) detection signal input from the CXD2585Q (IC101) on the CD block
“H”: active
17
LPH
O
Laser power control signal output to the CXD2585Q (IC101) on the CD block “H” active
18
XSEL
O
Operation mode select signal output to the CXD2585Q (IC101) on the CD block “H” active
19
AMUTE
O
Analog muting on/off control signal output to the CXD2585Q (IC101) on the CD block
“H”: muting on
20, 21
NC
O
Not used (open)
22
I2CCLK
I/O
Communication data reading clock signal input or transfer clock signal output with the system
controller (IC601)
23
I2CDATA
I/O
Communication data bus with the system controller (IC601)
24
TXD1
O
Not used (open)
25
RXD1
O
Not used (open)
26
CLK1
O
Not used (open)
27
RTS1
O
Not used (open)
28
NC
O
Not used (open)
29
SUBQ
I
Subcode Q data input from the CXD2585Q (IC101) on the CD block
30
SQCLK
O
Subcode Q data reading clock signal output to the CXD2585Q (IC101) on the CD block
“L”: active
31 to 33
NC
O
Not used (open)
34
SPDL MUTE
O
Spindle motor muting control signal outputto the spindle motor drive (IC191) on the CD block
35
DATA
O
Serial data output to the CXD2585Q (IC101) on the CD block
36
CLK
O
Serial data transfer clock signal output to the CXD2585Q (IC101) on the CD block “L” active
37
XLT
O
Serial data latch pulse output to the CXD2585Q (IC101) on the CD block “L” active
38
SENSE
I
Internal status detection monitor input from the CXD2585Q (IC101) on the CD block
39
LDON
O
Laser on/off control signal output to the CXA2568M (IC131) “H”: laser on
40
1/4 SW
O
Disc speed selection signal output to the BU4053BCFV (IC182) on the CD block
41
8/12 SW
O
Disc size selection signal output to the BU4053BCFV (IC182) on the CD block
42
BDSW1
O
BD selection signal output Not used (open)
43
BDSW2
O
BD selection signal output Not used (open)