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X9409 Datasheet, PDF (10/20 Pages) Xicor Inc. – Quad Digitally Controlled Potentiometers
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X9409
Instruction Format
Notes: (1) “MACK”/”SACK”: stands for the acknowledge sent by the master/slave.
(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).
Read Wiper Counter Register (WCR)
S device type device
instruction WCR
wiper position
T
A
R
T
identifier
0101
addresses
AAAA
3210
S
A
C
K
opcode
1001
addresses
0
0
P
1
P
0
S
A
C
K
(sent by slave on SDA)
MS
AT
WWWWWWC O
0
0
P
5
P
4
P
3
P
2
P
1
P
0
K
P
Write Wiper Counter Register (WCR)
S device type device
instruction WCR
wiper position
T
A
R
T
identifier
0101
addresses
AAAA
3210
S
A
C
K
opcode
1010
addresses
0
0
P
1
P
0
S
A
C
K
(sent by master on SDA)
S
A
WWWWWW C
0
0
P
5
P
4
P
3
P
2
P
1
P
0
K
S
T
O
P
Read Data Register (DR)
S
T
A
R
T
device type
identifier
0101
device
addresses
AAAA
3210
S
A
C
K
instruction
opcode
1011
DR and WCR
addresses
RRPP
1010
S
A
C
K
wiper position
(sent by slave on SDA)
MS
AT
WWWWWWC O
0
0
P
5
P
4
P
3
P
2
P
1
P
0
K
P
Write Data Register (DR)
S
T
A
R
T
device type
identifier
0101
device
addresses
AAAA
3210
S
A
C
K
instruction
opcode
1100
DR and WCR
addresses
S
A
wiper position
(sent by master on SDA)
S
A
S
T
R
1
R
0
P
1
P
0
C
K0
WWWWWWC O
0
P
5
P
4
P
3
P
2
P
1
P
0
K
P
HIGH-VOLTAGE
WRITE CYCLE
Transfer Data Register (DR) to Wiper Counter Register (WCR)
S
T
A
R
T
device type
identifier
0101
device
addresses
AAAA
3210
S
A
C
K
instruction
opcode
1101
DR and WCR
addresses
RRPP
1010
S
A
C
K
S
T
O
P
Write Wiper Counter Register (WCR) to Data Register (DR)
S device type
T identifier
device
addresses
S
instruction
opcode
DR and WCR
addresses
S
S
A
R0 1
T
A
0
1
A
3
A
2
A
1
A
0
C
K
1
11
0
R
1
R
0
P
1
AT
P CO
0 KP
HIGH-VOLTAGE
WRITE CYCLE
10
FN8192.3
October 19, 2005
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