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X9259 Datasheet, PDF (12/25 Pages) Xicor Inc. – Quad Digitally-Controlled (XDCP) Potentiometers
X9259
INSTRUCTION FORMAT
Read Wiper Counter Register (WCR)
S
T
A
R
T
Device Type
Identifier
0101
Device
Addresses S
A
C
A3 A2 A1 A0 K
Instruction
Opcode
1001
DR/WCR
Wiper Position
Addresses S (Sent by X9259 on SDA) M S
A WWWWWWWWA T
0
0
C
P1 P0 K
C
R
C
R
C
R
CCCCCCO
RRRRRKP
76543210
Write Wiper Counter Register (WCR)
S Device Type
T Identifier
Device
Addresses
Instruction DR/WCR
Wiper Position
S Opcode Addresses S (Sent by Master on SDA) S S
A
R
T
0
1
0
1
A
C
A3 A2 A1 A0 K
1
0
1
0
0
A WWWWWWWWA T
0
P1
P0
C
K
C
R
C
R
C
R
C
R
C
R
C
R
C
R
C
R
C
K
O
P
76543210
Read Data Register (DR)
S Device Type
Device
Instruction
DR/WCR
Wiper Position
T
A
R
T
Identifier
0101
Addresses S
A
C
A3 A2 A1 A0 K
Opcode
1011
Addresses
RB RA P1 P0
S (Sent by X9259 on SDA) M S
A WWWWWWWWA T
CCCCCCCCCCO
KRRRRRRRRKP
76543210
Write Data Register (DR)
S
T
A
R
T
Device Type
Identifier
0101
Device
Addresses
A3 A2 A1 A0
S
A
C
K
Instruction
Opcode
1100
DR/WCR
Addresses
RB RA P1 P0
Wiper Position
S (Sent by Master on SDA) S
A WWWWWWWW A
CCCCCCCCCC
KRRRRRRRRK
76543210
S
T
O
P
Global XFR Data Register (DR) to Wiper Counter Register (WCR)
S
T
A
R
T
Device Type
Identifier
0101
Device
Addresses
A3 A2 A1 A0
S
A
C
K
Instruction
Opcode
0001
DR/WCR
Addresses
RB RA 0 0
SS
AT
CO
KP
REV 1.2.3 4/30/02
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Characteristics subject to change without notice. 12 of 25