38
CFD-E75
•
MAIN BOARD IC801 CXP83624-035Q (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
CD-WRQ
I
Interruption detection signal input from the LC78645NE (IC701)
2
RMC
I
Sircs remote control signal input from the remote control receiver (IC804)
3
BUZZER
O
Buzzer sound signal output
4
N.C
O
Not used (open)
5
CD-RES
O
System reset signal output to the LC78645NE (IC701) “L”: reset
6
CD CE
O
Chip enable signal output to the LC78645NE (IC701)
7
CD CL
O
Serial data transfer clock signal output to the LC78645NE (IC701)
8
CD DO
I
Serial data input from the LC78645NE (IC701)
9
CD DI
O
Serial data output to the LC78645NE (IC701)
10
CD DRF
I
Focus on/off detection signal input from the LC78645NE (IC701)
11
CD FSEQ
I
Synchronizing signal detection signal input from the LC78645NE (IC701)
12
V-DATA
O
Serial data output to the electrical volume (IC320)
13
V-CLOCK
O
Serial data transfer clock signal output to the electrical volume (IC320)
14
N.C
O
Not used (open)
15
MEGABASS
O
Mega bass on/off control signal output “L”: mega bass on
16
A-MUTE
O
Audio muting on/off control signal output to the electrical volume (IC320) “H”: muting on
17
N.C
O
Not used (open)
18
CD
O
Power on/off control signal output for the CD +6V power supply and CD function control signal
output to the TA2068N (IC301) “H”: CD power on (CD on)
19
P-CON
O
Power on/off control signal output for the PLL low-pass filter circuit power supply and to the
power amplifier (IC390) “L”: standby mode, “H”: power on
20
CD DOOR
I
CD lid open/close detection switch (S901) input terminal “L”: CD lid is closed
21
REG CHK
I
Regulator check signal input of the AC input or battery input “H” active
22
N.C
O
Not used (open)
23
KEY-1
I
Key input terminal (A/D input) S401 to S406 (POWER, STANDBY, RADIO BAND AUTO
PRESET, TUNE
m
–, TUNE
M
+, DSPL ENT MEM) keys input
24
KEY-2
I
Key input terminal (A/D input) S407 to S413 (MENU ALARM,
x
,
u
, VOLUME –,
, MEGA BASS, MODE) keys input
25
JOG-B
I
Jog dial pulse input from the rotary encoder (RE401 JOG DIAL) (B phase input)
26
JOG-A
I
Jog dial pulseinput from the rotary encoder (RE401 JOG DIAL) (A phase input)
27
SIMUKE CHECK
I
Destination setting terminal
28
INIT
O
Initial setting terminal (Used for the Singapore, Taiwan, Korean and Argentina models)
29
SHIFT CLK
O
Shift clock output of the main system clock (4.19 MHz) “H” active
30
RST
I
System reset signal input from the reset signal generator (IC843) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
31
EXTAL
I
Main system clock input terminal (4.19 MHz)
32
XTAL
O
Main system clock output terminal (4.19 MHz)
33
VSS
—
Ground terminal
34
VL
O
Liquid crystal display drive bias control signal output terminal
35 to 37
VLC3 to VLC1
—
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
38 to 41
COM0 to COM3
O
Common drive signal output to the liquid crystal display (LCD801)
42 to 61
SEG0 to SEG19
O
Segment drive signal output to the liquid crystal display (LCD801)
62 to 64
N.C
O
Not used (open)
65
RADIO
O
Power on/off control signal output for the radio +6V power supply “H”: radio power on
66
TU-CE
O
PLL chip enable signal output to the FM/AM PLL (IC2)
6-18.
IC PIN FUNCTION DESCRIPTION
