X9111 Xicor, X9111 Datasheet - Page 9

• Manufacturer Part Number: X9111
• Description: Single Digitally-Controlled Potentiometer
• Manufacturer: Xicor

X9111 – Preliminary Information
Table 6. Instruction Set
Note: (1) 1/0 = data is one or zero
INSTRUCTION FORMAT
Read Wiper Counter Register (WCR)
Write Wiper Counter Register (WCR)
Read Data Register (DR)
REV 1.1.15 5/9/03
Falling
Falling
Falling
Read Wiper Counter
Register
Write Wiper Counter
Register
Read Data Register
Write Data Register
XFR Data Register to
Wiper Counter Register
XFR Wiper Counter
Register to Data Register
Read Status (WIP bit)
Edge
Edge
Edge
CS
CS
CS
Device Type
0
Device Type
0
Device Type
0
Instruction
Identifier
Identifier
Identifier
1
1
1
0
0
0
1
1
1
0 A1 A0
0 A1 A0
0 A1 A0
Addresses
Addresses
Addresses
Device
Device
Device
R/W
1
0
1
0
1
0
1
1
1
Instruction
Instruction
1
Opcode
Instruction
I
Opcode
1
1
1
1
1
1
0
3
Opcode
0
0
0
0
1
1
I
0
0
0
1
1
1
1
2
0
0
0 RB RA 0
0
0
Addresses
Addresses
Register
I
Register
0
1
1
0
0
1
0
1
Addresses
0
Instruction Set
0
Register
www.xicor.com
0
0
0
0
0
0
0
0
0
0
0 X X X X X X
0 X X X X X X
0 X X X X X X
RB
1/0
1/0
1/0
1/0
(Sent by X9111 on SO)
0
0
0
(Sent by Master on SI)
(Sent by X9111 on SO)
Wiper Position
Wiper Position
RA
1/0
1/0
1/0
1/0
Wiper Position
0
0
0
0
0
0
0
0
0
0
0
W
C
R
W
9
C
R
9
0
0
0
0
0
0
0
1
W
C
R
9
W
C
R
8
W
C
R
8
Characteristics subject to change without notice.
W
C
R
8
W
Read the contents of the Wiper
Counter Register
Write new value to the Wiper
Counter Register
Read the contents of the Data
Register pointed to RB-RA
Write new value to the Data
Register pointed to RB-RA
Transfer the contents of the Data
Register pointed to by RB-RA to
the Wiper Counter Register
Transfer the contents of the Wiper
Counter Register to the Data
Register pointed to by RB-RA
Read the status of the internal write
cycle, by checking the WIP bit
(read status register).
C
R
7
W
C
R
7
(sent by X9111 on SO)
(Sent by Master on SI)
W
C
R
7
W
C
R
W
6
C
R
6
(sent by X9111 on SO)
Wiper Position
W
C
R
Wiper Position
6
W
C
R
5
W
C
R
5
Wiper Position
W
C
R
5
W
C
R
W
4
C
R
4
W
Operation
C
R
4
W
C
R
3
W
C
R
3
W
C
R
3
W
C
R
2
W
C
R
2
W
C
R
2
W
C
R
W
1
C
R
1
W
C
R
1
W
C
R
0
W
C
R
0
W
C
R
0
Rising
Rising
Edge
Edge
CS
CS
Rising
Edge
CS
9 of 21