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• IC Pin Function Description
MAIN BOARD IC601 uPD78F0526GB (S)-UET-A (SYSTEM CONTROLLER)
MAIN BOARD IC601 uPD78F0526GB (S)-UET-A (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
KEY-WAKE
I
System wake up signal input terminal
2
AC CUT
I
AC cut on/off detection signal input terminal "L": AC cut on
3
EROM-DA
I/O
Two-way serial data bus with the EEPROM
4
EROM-CL
O
Serial data transfer clock signal output to the EEPROM
5
RESET
I
System reset signal input from the reset switch "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
6
XT2
O
Sub system clock output terminal (32.768 kHz)
7
XT1
I
Sub system clock input terminal (32.768 kHz)
8
FLMDO
I
Internal fl ash memory data writing mode control signal input terminal Not used
9
X2
O
Main system clock output terminal (16 MHz)
10
X1
I
Main system clock input terminal (16 MHz)
11
REGC
-
External capacitor connection terminal for regulator
12
VSS
-
Ground terminal
13
VDD
-
Power supply terminal (+3.3V)
14, 15
-
-
Not used
16
AMP-ON
O
Power amplifi er on/off control signal output terminal "H": power amplifi er on
17
(A-MUTE)
O
Power amplifi er muting on/off control signal output terminal "H": Power amplifi er muting on
18
SA-INT
I
Interrupt request signal input from the EZW-RT10
19
SA-CL
O
Serial data transfer clock signal output to the EZW-RT10
20
SA-DA
I/O
Two-way serial data bus with the EZW-RT10
21
SA-RST
O
System reset signal output to the EZW-RT10 "L": reset
22
DAC-DA
I/O
Two-way serial data bus with the D/A converter
23
DAC-CL
O
Serial data transfer clock signal output to the D/A converter
24
LCD-MOD
O
Signal output for discriminating between command and display data to the liquid crystal
display driver "L":display data, "H": command
display driver "L":display data, "H": command
25
LCD-INH
O
Reset signal output to the liquid crystal display driver "L": reset
26
SA-PA
I
PAIRING key input terminal
27
SIRC
I
SIRCS signal input terminal Not used
28
STB-LED
O
LED drive signal output terminal for STANDBY indicator "H": LED on
29
P-ON DET
I
AC power detection signal input terminal
30
3.3V-ON
O
Power supply on/off signal output terminal for the EZW-RT10 and D/A converter
"H": power on
"H": power on
31
LCD-LED
O
LED drive signal output terminal for LCD back light "H": LED on
32
SA-LED
O
LED drive signal output terminal for S-AIR indicator "H": LED on
33
FLAS-SI
I
Serial data input terminal Not used
34
FLAS-SO
O
Serial data output terminal Not used
35
LCD-DA
O
Serial data output to the liquid crystal display driver
36
LCD-CE
O
Chip enable signal output to the liquid crystal display driver
37
LCD-CL
O
Serial data transfer clock signal output to the liquid crystal display driver
38
AVREF
I
Reference voltage (+3.3V) input terminal
39
AVSS
-
Ground terminal
40
LEV-DET
I
Audio level detection signal input terminal
41
SA-ID
I
S-AIR ID switch input terminal
42
P-MONI
I
Power monitor input terminal
43
SPEC
I
Time display setting terminal
"L": AEP model, "M": Japanese model, "H": North American model
"L": AEP model, "M": Japanese model, "H": North American model
44 to 46
KEY2 to KEY0
I
Front panel key input terminal
47
3.3V-MONI
I
Power supply voltage detection signal input terminal for the EZW-RT10 and D/A converter
48
P-ON
O
Main power on/off control signal output terminal
49
A-MUTE
O
Muting on/off control signal output terminal Not used
50
BUZZ2
O
Buzzer volume control signal output terminal
51
BUZZER
O
Buzzer interval control signal output terminal
52
BUZZ3
O
Buzzer volume control signal output terminal
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