X9258 Datasheet, PDF (10/22 Pages) Xicor Inc. – Quad Digital Controlled Potentiometers (XDCP)

X9258
Write Data Register (WR)
S device type
T identifier
A
device
addresses
S
A
R
T
0
1
0
1
A
3
A
2
A
1
A
0
C
K
instruction
opcode
1100
DR and WCR
addresses
RRPP
1010
S
A
Data Byte
(sent by master on SDA)
S
A
S
T
C ^WWWWWWWWC O
K
P
7
P
6
P
5
P
4
P
3
P
2
P
1
P
0
K
P
HIGH-VOLTAGE
WRITE CYCLE
XFR Data Register (DR) to Wiper Counter Register (WCR)
S device type device
T
A
R
T
identifier
0101
addresses
AAAA
3210
S
A
C
K
instruction
opcode
1101
DR and WCR
addresses
RRPP
1010
SS
AT
CO
KP
XFR Wiper Counter Register (WCR) to Data Register (DR)
S
T
A
R
T
device type
identifier
0101
device
addresses
AAAA
3210
S
A
C
K
instruction
opcode
1110
DR and WCR
addresses
S
A
S
T
R R P P ^CO
1 0 1 0 KP
HIGH-VOLTAGE
WRITE CYCLE
Increment/Decrement Wiper Counter Register (WCR)
S device type
T identifier
A
device
addresses
S
A
instruction
opcode
R
T
0
1
0
1
A
3
A
2
A
1
A
0
C
K
0
0
1
0
WCR
addresses
0
0
P
1
P
0
S
A
increment/decrement
(sent by master on SDA)
S
T
C _I/
KD
I/
D
.
.
.
.
I/
D
I/ ^O
DP
Global XFR Data Register (DR) to Wiper Counter Register (WCR)
S device type
T identifier
device
addresses
S
A
instruction
opcode
DR
addresses
SS
AT
A
R
T
0
1
0
1
A
3
A
2
A
1
A
0
C
K
0
0
0
1
R
1
R
0
0
0
C
K
O
P
Global XFR Wiper Counter Register (WCR) to Data Register (DR)
S device type
T identifier
device
addresses
S
instruction
opcode
DR
addresses
S
S
A
R
T
0
1
0
1
A
3
A
2
A
1
A
AC
0K
1
0
0
0
RR
10
0
0
AT
CO
KP
HIGH-VOLTAGE
WRITE CYCLE
REV 1.1.7 2/4/03
www.xicor.com
Characteristics subject to change without notice. 10 of 22