X9428 Xicor, X9428 Datasheet - Page 9

• Manufacturer Part Number: X9428
• Description: Single Digitally Controlled Potentiometer
• Manufacturer: Xicor

X9428
Instruction Format
Notes: (1) “MACK”/”SACK”: stands for the acknowledge sent by the master/slave.
Read Wiper Counter Register (WCR)
Write Wiper Counter Register (WCR)
Read Data Register (DR)
Write Data Register (DR)
XFR Data Register (DR) to Wiper Counter Register (WCR)
REV 1.1.5 7/8/03
R
R
R
R
R
S
T
A
T
S
T
A
T
S
T
A
T
S
T
A
T
S
T
A
T
device type
device type
0 1 0 1
0 1 0 1
device type
0 1 0 1
device type
0 1 0 1
device type
0 1 0 1
identifier
identifier
identifier
identifier
identifier
(2) “A3 ~ A0”: stands for the device addresses sent by the master.
(3) “X”: indicates that it is a “0” for testing purpose but physically it is a “don’t care” condition.
(4) “I”: stands for the increment operation, SDA held high during active SCL phase (high).
(5) “D”: stands for the decrement operation, SDA held low during active SCL phase (high).
A
3
A
3
addresses
A
A
A
addresses
3
3
3
addresses
addresses
addresses
device
device
device
device
device
A
2
A
2
A
A
A
2
2
2
0
0
0
0
0
A
0
A
0
A
A
A
0
0
0
C
S
A
K
S
A
C
K
C
S
A
C
K
S
A
C
K
S
A
K
1 1 0 0
1 1 0 1
instruction
instruction
1 0 1 1
1 0 0 1 0 0 0 0
1 0 1 0 0 0 0 0
instruction
instruction
instruction
opcode
opcode
opcode
opcode
opcode
R
1
R
addresses
1
addresses
R
1
register
addresses
register
R
0
R
register
0
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R
0
0 0
0 0
0 0
C
S
A
K
S
A
C
K
C
C
C
S
A
K
S
A
K
S
A
K
(sent by master on SDA)
0 0
O
S
P
T
0 0
0 0
0 0
(sent by master on SDA)
wiper position/data
(sent by slave on SDA)
(sent by slave on SDA)
wiper position/data
W
P
5
wiper position
wiper position
W
W
W
P
P
P
5
5
5
W
P
4
W
W
W
P
4
P
P
4
4
W
P
3
W
W
W
P
P
P
3
3
3
W
P
2
Characteristics subject to change without notice.
W
W
W
P
2
P
P
2
2
W
P
1
W
W
W
P
P
P
1
1
1
W
P
0
W
W
W
P
0
P
P
0
0
C
S
A
K
M
C
M
A
K
A
C
K
S
A
C
K
O
S
T
P
O
S
P
O
O
T
S
T
P
S
T
P
HIGH-VOLTAGE
WRITE CYCLE
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