X9409 Xicor, X9409 Datasheet - Page 9

• Manufacturer Part Number: X9409
• Description: Quad Digitally Controlled Potentiometers
• Manufacturer: Xicor

X9409 – Preliminary Information
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)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Write Wiper Counter Register (WCR) to Data Register (DR)
REV 1.6 1/30/03
S
A
R
S
A
R
S
A
R
S
T
A
R
T
S
A
R
S
A
R
T
T
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
device type
0 1 0 1
identifier
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
A
addresses
3
A
A
A
3
addresses
3
3
addresses
addresses
addresses
addresses
device
device
device
device
device
device
A
2
A
2
A
2
A
A
A
2
2
2
A
1
A
1
A
A
1
A
A
1
1
1
A
0
A
0
A
0
A
A
A
0
0
0
S
A
C
K
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 1 1 0
1 0 0 1 0 0
1 0 1 0 0 0
1 0 1 1
instruction
instruction
instruction
instruction
opcode
opcode
opcode
opcode
opcode
opcode
DR and WCR
R
1
DR and WCR
R
1
DR and WCR
DR and WCR
R
addresses
1
R
1
addresses
addresses
addresses
addresses
addresses
R
0
R
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WCR
WCR
0
R
R
0
0
P
1
P
P
1
1
P
1
P
P
1
1
P
P
P
0
0
0
P
0
P
0
P
0
S
A
C
K
S
A
C
K
S
A
C
K
S
A
C
K
S
A
C
K
S
A
C
K
(sent by master on SDA)
0 0
0 0
(sent by master on SDA)
0 0
O
S
P
(sent by slave on SDA)
T
O
0 0
S
P
T
(sent by slave on SDA)
wiper position
wiper position
wiper position
HIGH-VOLTAGE
W
P
W
W
5
WRITE CYCLE
P
P
5
5
wiper position
W
P
5
W
P
4
W
W
P
P
4
4
W
P
4
W
P
3
W
W
P
P
3
3
W
P
3
W
P
2
Characteristics subject to change without notice.
W
W
P
P
2
2
W
P
2
W
P
1
W
W
P
P
1
1
W
P
1
W
P
0
W
W
P
P
0
0
W
P
0
S
A
C
K
M
C
C
A
K
S
A
K
M
A
C
K
O
S
P
T
O
O
S
P
S
P
T
T
S
O
P
T
HIGH-VOLTAGE
WRITE CYCLE
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