Control Port Functions - Sanyo PLC-SW30 Service Manual

Control Port Functions

● Output Expander (IC1802, 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
● Input Expander (IC1811, TC74LCX541FT) Port Functions
Pin No. Name
1 OE1
2 A1
3 A2
4 A3
5 A4
6 A5
7 A6
8 A7
9 A8
10 GND
11 Y8
12 Y7
13 Y6
14 Y5
15 Y4
16 Y3
17 Y2
18 Y1
19 OE2
20 Vdd
Function
IO_ENB
D0
D1
D2
D3
D4
D5
D6
D7
GND
ADD1_CS
ON_3.3V
TURBO_C
SH_B_ST
SH_G_ST
SH_R_ST
IRM_RS
MCLK_SW
FAN_SW
Power Supply +3.3V
Function
IO_ENB 1
K11
K12
K13
OPTION1
OPTION2
OPTION3
LAMP_ERR
S_SW
GND
D7
D6
D5
D4
D3
D2
D1
D0
IO_ENB 2
Power Supply +3.3V
Output Port Chip Select
3.3V OFF at standby mode
Strobe for Turbo (IC9401)
Strobe for B sample & hold (IC501)
Strobe for G sample & hold (IC531)
Strobe for R sample & hold (IC561)
Reset for IC401
Switch for MCLK
Switch for FAN
CS1
KEY Scan Input
KEY Scan Input
KEY Scan Input
Option Resistor 1
Option Resistor 2
Option Resistor 3
Lamp Error Input
S-video Detection
-43-
Enable = L
Enable = L (OE1 and OE2)
Enable = L (OE1 and OE2)
I/O
I
I
I
I
I
I
I
I
I
-
I
O
O
O
O
O
O
O
O
-
I/O
I
I
I
I
I
I
I
I
I
-
O
O
O
O
O
O
O
O
I
-