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7-12. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC201 CXP740056-010R (SYSTEM CONTROLLER)
Pin No.
Pin Name
1 to 3
NC
4
AMUTE
5
CDXLT
6
CDDATA
7
CDCLK
8
CDON
9
ELVON
10 to 35
NC
36
LCDON
37
LCDCE
38
RESET
39
GND
40
XTAL
41
EXTAL
42
TEXTSEL
43
LCDINH
44
LCDDATA
45
LCDCLK
46
CFSEL
47
EEINIT
48
EEDATA
49
EECLK
50
VSS
51
AVREF
52
VDD
53
SINGLE
54
LDON
55
AGCHOLD
56
RF AGC
57
H.TEMP
58
KEYIN
59
EHS
60
MCK
61
NC
62
ACCIN
63
EJECT
64
MAGSW
65
LOAD1
I/O
—
Not used (open)
O
Audio line muting on/off control signal output "H": muting on
O
Serial data latch pulse signal output to the CXD2598Q (IC101)
O
Serial data output to the CXD2598Q (IC101)
O
Serial data transfer clock signal output to the CXD2598Q (IC101)
O
D/A converter and servo section power supply on/off control signal output "H": power on
O
Mechanism deck section power supply on/off control signal output "H": power on
—
Not used (open)
The LCD in remote commander and FM transmitter section power supply on/off control signal
O
output "H": power on
O
Chip enable signal output to the LCD driver in remote commander
System reset signal input from the reset switch (SW302) and reset signal generator (IC303)
I
"L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
—
Ground terminal
O
Main system clock output terminal (12 MHz)
I
Main system clock input terminal (12 MHz)
CD text mode setting terminal "L": CD text on, "H": does not display track name
I
Not used (fixed at "L")
O
Inhibit signal output to the LCD driver in remote commander
O
Serial data output to the LCD driver in remote commander
O
Serial data transfer clock signal output to the LCD driver in remote commander
I
Custom file on/off setting terminal "L" custom file on Not used (fixed at "L")
I
Initialize signal input for the EEPROM "H": format Not used (fixed at "L")
I/O
Two way data bus with the EEPROM (IC203)
O
Serial data transfer clock signal output to the EEPROM (IC203)
—
Ground terminal (for A/D converter)
I
Reference voltage (+5V) input terminal (for A/D converter)
—
Power supply terminal (+5V) (for A/D converter)
Setting terminal for the single disc/multiple discs mode
I
"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
Elevator height position detection signal input from the RV202 (elevator height sensor)
I
(A/D input)
Input of signal for the fine adjustment (elevator height (address) adjustment; RV201) of elevator
I
position (A/D input)
—
Not used (open)
I
Accessory detection signal input "L": accessory on
I
Eject switch (SW301) input terminal "H" active
I
Magazine in/out detection switch input terminal Not used (open)
Chucking end detect switch (SW1) input terminal
I
"L": When completion of the disc chucking operation
Description
35
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