Sanyo PLC-SW36 Service Manual page 35

Control Port Functions
● IIC Bus D/A Converter (IC3571, M62392FP) Port Functions
Pin No. Name
1 R
2 SCL
3 SDA
4 A07
5 A08
6 A09
7 A10
8 A11
9 A12
10 VrefL
11 VrefU1
12 Vss
13 VrefU2
14 A01
15 A02
16 A03
17 A04
18 A05
19 A06
20 Vcc
21 Vdd
22 CS2
23 CS1
24 CS0
● Sub CPU (IC1882, PIC12F675) Port Functions
Pin No. Name
1 VDD
2 GP5/T1CKI
3 GP4
4 GP3
5 GP2/T0CKI
6 GP1
7 GP0
8 GND
● Output Expander (IC1801, TC74LCX574FT) Port Functions
Pin No. Name
1 OE
2 D0
3 D1
4 D2
5 D3
6 D4
7 D5
8 D6
9 D7
10 GND
11 CK
12 Q7
13 Q6
14 Q5
15 Q4
16 Q3
17 Q2
18 Q1
19 Q0
20 Vdd
Function
Reset input
P_SCK2
P_SDA2
-
-
-
-
-
-
DAC Lower Reference Voltage input
DAC Upper Reference Voltage input (CH5~CH8)
GND
DAC Upper Reference Voltage input (CH1~CH 4)
R_V1
R_V2
G_V1
G_V2
B_V1
B_V2
Power Supply for Output Buffer (+12V)
Power Supply +5V
Slave address setting port 2 (Vdd)
Slave address setting port 1 (Vdd)
Slave address setting port 0 (GND)
Function
Power Supply +5V
TMR1_CLK
TXL
RXL
LAMP_PWM
SCEL
LAMP_ERR
-
Function
IO_ENB
D0
D1
D2
D3
D4
D5
D6
D7
GND
ADD1_CS
MUTE
READY_LED
LAMP_LED
TEMP_LED
PWR_LED
KO3
KO2
KO1
Power Supply +3.3V
IIC BUS SCL
IIC BUS SDA
Not used
Not used
Not used
Not used
Not used
Not used
Video signal reference voltage (-) R
Video signal reference voltage (+)R
Video signal reference voltage (-)G
Video signal reference voltage (+)G
Video signal reference voltage (-)B
Video signal reference voltage (+)B
Clock Input
Power switch signal
Lamp Status Signal
APL Level Input
Lamp ON/OFF Control
Lamp Error Output
Output Port Chip Select
Audio Mute Output
Ready LED
Lamp Replace LED
Warning Temperature LED
AC Power LED
KEY Scan Output
KEY Scan Output
KEY Scan Output
-35-
Low Wattage = L
Lamp ON = L
Lamp Error = H
Enable = L
Mute = H
Ready = H
Replace = H
Warning = H
ON = H
I/O
I
I
I/O
O
O
O
O
O
O
-
-
-
-
O
O
O
O
O
O
-
-
I
I
I
I/O
-
I
O
I
I
O
O
-
I/O
I
I
I
I
I
I
I
I
I
-
I
O
O
O
O
O
O
O
O
-