Pioneer DVR-543H-S Service Manual page 113

5
PCA9557PW (MAIN ASSY : IC3802)
QQ
3 7 63 1515 0
• 8Bit IIC to PARA IC
PIN LAYOUT
1
SCL
SDA 2
3
A0
A1
4
A2 5
6
I/O0
I/O1
7
V
8
SS
PIN FUNCTION
Pin No.
1
2
3
4
5
TE
L 13942296513
6
7
8
9±14
15
16
www
.
5
http://www.xiaoyu163.com
6
BLOCK DIAGRAM
V
16
DD
15 RESET
A0
I/O7
14
A1
I/O6
13
A2
I/O5
12
SCL
I/O4
11
SDA
I/O3
10
I/O2
9
V
DD
V
SS
RESET
Name
SCL
SDA
A0
A1
A2
I/O0
I/O1
V
SS
I/O2±I/O7
RESET
V
DD
x ao u163
y
i
6
http://www.xiaoyu163.com
2 9
8
PCA9557
INPUT
FILTER
POWER-ON
RESET
Function
Serial clock line
Serial data line
Address input 0
Address input 1
Q Q
Address input 2
3 6 7 1 3 1 5
I/O0 (open drain)
I/O1
Supply ground
I/O2 to I/O7
Active-LOW reset input
Supply voltage
co
.
DVR-640H-S
7
9 4 2 8
8-BIT INPUT/
2
I C/SMBus
OUTPUT
CONTROL
PORTS
WRITE pulse
READ pulse
0 5 8 2 9 9 4 2 8
m
7
8
9 9
A
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
B
C
9 9
D
E
F
113
8