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6-12.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC201 CXP740056-010R (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 3
NC
—
Not used (open)
4
AMUTE
O
Audio line muting on/off control signal output “H”: muting on
5
CDXLT
O
Serial data latch pulse signal output to the CXD2598Q (IC101)
6
CDDATA
O
Serial data output to the CXD2598Q (IC101)
7
CDCLK
O
Serial data transfer clock signal output to the CXD2598Q (IC101)
8
CDON
O
D/A converter and servo section power supply on/off control signal output “H”: power on
9
ELVON
O
Mechanism deck section power supply on/off control signal output “H”: power on
10 to 35
NC
—
Not used (open)
36
LCDON
O
The LCD in remote commander and FM transmitter section power supply on/off control signal
output “H”: power on
37
LCDCE
O
Chip enable signal output to the LCD driver in remote commander
38
RESET
I
System reset signal input from the reset switch (SW302) and reset signal generator (IC303)
“L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
39
GND
—
Ground terminal
40
XTAL
O
Main system clock output terminal (12 MHz)
41
EXTAL
I
Main system clock input terminal (12 MHz)
42
TEXTSEL
I
CD text mode setting terminal “L”: CD text on, “H”: does not display track name
Not used (open)
43
LCDINH
O
Inhibit signal output to the LCD driver in remote commander
44
LCDDATA
O
Serial data output to the LCD driver in remote commander
45
LCDCLK
O
Serial data transfer clock signal output to the LCD driver in remote commander
46
CFSEL
I
Custom file on/off setting terminal “L” custom file on Not used (open)
47
EEINIT
I
Initialize signal input for the EEPROM “H”: format Not used (open)
48
EEDATA
I/O
Two way data bus with the EEPROM Not used(open)
49
EECLK
O
Sirial data transfer clock signal output to the EEPROM Not used (open)
50
VSS
—
Ground terminal (for A/D converter)
51
AVREF
I
Reference voltage (+5V) input terminal (for A/D converter)
52
VDD
—
Power supply terminal (+5V) (for A/D converter)
I
Setting terminal for the single disc/multiple discs mode
“L”: single mode, “H”: multiple discs mode Not used (open)
O
The laser automatic power control on/off signal output “H”: automatic power control on
O
RF AGC hold on/off signal output “H”: hold on
O
RF AGC level control signal output “L ”: off, center voltage : 40%, “H”: 60%
I
High temperature sensor input terminal Not used (open)
I
Key input terminal (A/D input) from the remote commander
I
Elevator height position detection signal input from the RV202 (elevator height sensor)
(A/D input)
60
MCK
I
Input of signal for the fine adjustment (elevator height (address) adjustment; RV201) of elevator
position (A/D input)
61
NC
—
Not used (open)
62
ACCIN
I
Accessory detection signal input “L”: accessory on
63
EJECT
I
Eject switch (SW301) input terminal “H” active
64
MAGSW
I
Magazine in/out detection switch input terminal Not used (open)
65
LOAD1
I
Chucking end detect switch (SW1) input terminal
“L”: When completion of the disc chucking operation
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