X9110 Datasheet, PDF (10/21 Pages) Xicor Inc. – Single Digitally-Controlled (XDCP) Potentiometer

X9110 – Preliminary Information
Write Data Register (DR)
Device Type
Identifier
CS
Falling
Edge _{0 1 0 1}
Device
Addresses
0 0 A0
Instruction
Opcode
1100
Register
Address
RB RA 0 0
Wiper Position or Data Wiper Position or Data
(Sent by Master on SI) (Sent by Master on SI)
CS
X
X
X
X
X
X
W
C
W
C
W
C
W
C
W
C
W
C
W
C
W
C
W
C
W
C
Rising
Edge
RRR R R R R R R R
987 6 5 4 3 2 1 0
Transfer Data Register (DR) to Wiper Counter Register (WCR)
CS
Falling
Edge
Device Type
Identifier
0101
Device
Addresses
0
0
A
0
Instruction
Opcode
1100
Register
Address
RB RA 0 0
CS
Rising
Edge
Transfer Wiper Counter Register (WCR) to Data Register (DR)
CS
Falling
Edge
Device Type
Identifier
0101
Device
Addresses
0
0
A
0
Instruction
Opcode
1110
Register
Address
RB RA 0
CS
Rising
Edge
0
HIGH-VOLTAGE
WRITE CYCLE
Read Status Register (SR)
CS
Falling
Edge
Device Type
Identifier
0101
Device
Addresses
0
0
A
0
Instruction Register
Status Data
Status Data
Opcode Addresses (Sent by Slave on SO)
(Sent by Slave on SO)
CS
Rising
Edge
0 1 0 X 0 0 0 1 X X X X X X X X 0 0 0 0 0 0 0 WIP
Notes: (1) “A0”: stands for the device address sent by the master.
(2) WCRx refers to wiper position data in the Wiper Counter Register
(3) “X”: Don’t Care.
REV 1.1.4 11/13/00
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Characteristics subject to change without notice. 10 of 21