X9271 Datasheet, PDF (12/23 Pages) Xicor Inc. – Single Digitally-Controlled (XDCP) Potentiometer

X9271
Transfer Data Register (DR) to Wiper Counter Register (WCR)
CS ^{Device Type}
Device
Instruction
DR/Bank
CS
Falling ^Identifier
Addresses
Opcode
Addresses _Rising
Edge _{0 1 0 1 0 0 A1 A0 1 1 0 1 RB RA 0 0} Edge
Increment/Decrement Wiper Counter Register (WCR)
CS ^{Device Type}
Device
Instruction DR/Bank
Increment/Decrement
CS
Falling ^Identifier
Addresses
Opcode Addresses
(Sent by Master on SDA) _Rising
Edge _{0 1 0 1 0 0 A1 A0 0 0 1 0 X X 0 0 I/D I/D . . . . I/D I/D} Edge
Read Status Register (SR)
CS ^{Device Type}
Device
Instruction DR/Bank
Data Byte
Falling ^Identifier
Addresses
Opcode Addresses
(Sent by X9271 on SO)
Edge _{0 1 0 1 0 0 A1 A0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 WIP}
CS
Rising
Edge
Notes: (1) “A1 ~ A0”: stands for the device addresses sent by the master.
(2) WCRx refers to wiper position data in the Wiper Counter Register
(2) “I”: stands for the increment operation, SI held HIGH during active SCK phase (high).
(3) “D”: stands for the decrement operation, SI held LOW during active SCK phase (high).
(4) “X:”: Don’t Care.
REV 1.1.7 2/6/03
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Characteristics subject to change without notice. 12 of 23