X9418 Xicor, X9418 Datasheet - Page 9

• Manufacturer Part Number: X9418
• Description: Dual Digitally Controlled Potentiometers
• Manufacturer: Xicor

X9418
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 7/23/02
S
A
R
S
A
R
S
A
R
S
T
A
R
T
S
A
R
T
T
T
T
T
T
T
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
3
addresses
3
3
addresses
addresses
addresses
device
device
device
device
device
A
2
A
2
A
A
A
2
2
2
A
1
A
1
A
A
A
1
1
1
A
0
A
0
A
A
A
0
0
0
S
A
C
K
S
A
C
K
C
C
S
A
C
K
S
A
K
S
A
K
1 1 0 0
1 1 0 1
instruction
instruction
1 0 0 1 0 0 0
1 0 1 0 0 0 0
1 0 1 1
instruction
instruction
instruction
opcode
opcode
opcode
opcode
opcode
R
DR and WCR
1
R
DR and WCR
1
DR and WCR
R
1
addresses
addresses
addresses
addresses
addresses
R
R
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WCR
WCR
0
0
R
0
0
0 P0
0
P
P
0
0
P
0
P
0
S
A
C
K
S
A
C
K
S
A
C
K
S
A
C
K
C
S
A
K
0 0
(sent by master on SDA)
0 0
O
S
P
(sent by slave on SDA)
T
(sent by master on SDA)
0 0
0 0
(sent by slave on SDA)
wiper position/data
wiper position/data
wiper position
wiper position
W
W
P
P
5
5
W
P
5
W
P
5
W
W
P
P
4
4
W
P
4
W
P
4
W
W
P
P
3
3
W
P
3
W
P
3
Characteristics subject to change without notice.
W
W
P
P
2
2
W
P
2
W
P
2
W
W
P
P
1
1
W
P
1
W
P
1
W
W
P
P
0
0
W
P
0
W
P
0
M
C
C
A
K
S
A
K
S
A
C
K
M
A
C
K
O
O
S
P
S
P
T
T
O
S
P
T
O
S
T
P
HIGH-VOLTAGE
WRITE CYCLE
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