X9111 Datasheet, PDF (8/18 Pages) Xicor Inc. – Single Digitally-Controlled Potentiometer

X9111
Read Data Register (DR)
Device
Type
CS ^Identifier
Device
Addresses
Falling
Edge
0 1 0 1 0 A1 A0
Instruction
Opcode
1010
Register
Addresses
RB RA 0 0
Wiper Position
Wiper Position
(Sent by X9111 on SO)
(sent by X9111 on SO)
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
RRRRRRRRRR
9876543210
Write Data Register (DR)
CS
Falling
Edge
Device Type
Identifier
0101
Device
Addresses
0 A1 A0
Instruction
Opcode
1100
Register
Addresses
R
B
R
A
00
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
WWW W W W
CCC C C C
RRR R R R
W
C
R
W
C
R
WW
CC
RR
Rising
Edge
987 6 5 4 3 2 1 0
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Device Type
Device
Identifier
Addresses
CS
Falling
Edge _{0 1 0 1 0 A1 A0}
Instruction
Opcode
Register
Addresses
1 1 0 0 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 A1 A0
Instruction
Opcode
1110
Register Addresses
RB RA 0 0
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
Read Status Register (SR)
CS
Falling
Edge
Device Type
Identifier
0101
Device
Addresses
0 A1 A0
Instruction
Register
Status Data
Status Data
Opcode
Addresses
(Sent by Slave on SO)
(Sent by Slave on SO)
CS
Rising
0
1
0
0
0
0
0
1
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
WI
P
Edge
NOTES:
1. “A0 and A1”: stand 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.
8
FN8159.1
March 25, 2005