X9111 Xicor, X9111 Datasheet - Page 10
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X9111
Manufacturer Part Number
X9111
Description
Single Digitally-Controlled Potentiometer
Manufacturer
Xicor
Datasheet
1.X9111.pdf
(21 pages)
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X9111 – Preliminary Information
Write Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Read Status Register (SR)
Notes: (1) “A0 and A1”: stand for the device address sent by the master.
REV 1.1.15 5/9/03
Falling
Falling
Falling
Falling
Edge
Edge
Edge
Edge
CS
CS
CS
CS
(2) WCRx refers to wiper position data in the Wiper Counter Register
(3) “X”: Don’t Care.
Device Type
0
Device Type
0
Device Type
0
Device Type
0
Identifier
Identifier
Identifier
Identifier
1
1
1
1
0
0
0
0
1
1
1
1
0 A1 A0
0 A1 A0
0 A1 A0
0 A1 A0
Addresses
Addresses
Addresses
Addresses
Device
Device
Device
Device
1 1 0 0 RB RA 0 0 X X X X X X
Instruction
0
1
Instruction
Opcode
Instruction
1
Opcode
Opcode
Instruction
1
1
Opcode
1
0
1
0
0
0
0 RB RA 0
Addresses
0
RB
Register
Addresses
Register
Addresses
0
Addresses
Register
Register
www.xicor.com
RA
0
1 X X X X X X X X 0
0
0
Wiper Position or Data
(Sent by Master on SI)
0
(Sent by Slave on SO)
Rising
Edge
CS
Rising
Edge
CS
Status Data
HIGH-VOLTAGE
WRITE CYCLE
W
C
R
9
W
C
R
8
Characteristics subject to change without notice.
W
C
R
7
Wiper Position or Data
(Sent by Master on SI)
W
C
R
6
(Sent by Slave on SO)
0
W
C
R
5
0
W
C
R
Status Data
4
0
W
C
R
3
0
W
C
R
2
0
W
C
R
1
0 WIP
W
C
R
0
Rising
Edge
CS
Rising
Edge
CS
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