X9259_14 Datasheet, PDF (11/21 Pages) Intersil Corporation – Single Supply/Low Power/256-Tap/2-Wire Bus Quad Digitally-Controlled Potentiometers

X9259
Transfer Wiper Counter Register (WCR) to Data Register (DR)
S DEVICE TYPE
DEVICE
INSTRUCTION
DR/WCR
T
A
R
T
IDENTIFIER
0101
ADDRESSES
A3 A2 A1 A0
S
A
C
K
OPCODE
1110
ADDRESSES
RB RA P1 P0
S
A
C
K
S
T
O
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
S
A
INSTRUCTION
OPCODE
C
A3 A2 A1 A0 _K 1 1 0 1
DR/WCR
ADDRESSES
RB RA P1 P0
SS
AT
CO
KP
Increment/Decrement Wiper Counter Register (WCR)
S
T
A
R
T
DEVICE TYPE
IDENTIFIER
0101
DEVICE
ADDRESSES
A3 A2 A1 A0
S
A
C
K
INSTRUCTION
OPCODE
0010
DR/WCR
ADDRESSES
0 0 P1 P0
S
A
INCREMENT/DECREMENT
(SENT BY MASTER ON SDA)
S
T
C
O
K ^{I/D I/D . . . . I/D I/D} P
NOTES:
5. “MACK”/”SACK”: stands for the acknowledge sent by the Master/Slave.
6. “A3 ~ A0”: stands for the device addresses sent by the master.
7. “X”: indicates that it is a “0” for testing purpose but physically it is a “don’t care” condition.
8. “I”: stands for the increment operation, SDA held high during active SCL phase (high).
9. “D”: stands for the decrement operation, SDA held low during active SCL phase (high).
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FN8169.6
December 12, 2014