X9241A Xicor, X9241A Datasheet - Page 6

• Manufacturer Part Number: X9241A
• Description: Quad Digitally Controlled Potentiometer (XDCP)
• Manufacturer: Xicor

X9241A
Figure 6. Increment/Decrement Timing Limits
Table 1. Instruction Set
Notes: (10) 1/0 = data is one or zero
REV 1.1.13 12/09/02
Read WCR
Write WCR
Read Data
Register
Write Data
Register
XFR Data
Register to
WCR
XFR WCR to
Data Register
Global XFR
Data Register to
WCR
Global XFR
WCR to Data
Register
Increment/
Decrement
Wiper
INC/DEC
ISSUED
Instruction
V
CMD
SDA
SCL
(11) X = Not applicable or don’t care; that is, a data register is not involved in the operation and need not be addressed (typical)
W
/R
W
I
1
1
1
1
1
1
0
1
0
3
I
0
0
0
1
1
1
0
0
0
2
I
0
1
1
0
0
1
0
0
1
1
Instruction Format
I
1
0
1
0
1
0
1
0
0
0
Voltage Out
1/0
1/0
1/0
1/0
1/0
1/0
1/0
P
X
X
1
(10)
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1/0
1/0
1/0
1/0
1/0
1/0
1/0
P
X
X
0
X
1/0
1/0
1/0
1/0
1/0
1/0
R
X
X
(11)
1
1/0
1/0
1/0
1/0
1/0
1/0
R
X
X
X
0
Read the contents of the Wiper Counter
Register pointed to by P
Write new value to the Wiper Counter
Register pointed to by P
Read the contents of the Register
pointed to by P
Write new value to the Register pointed
to by P
Transfer the contents of the Register
pointed to by P
associated WCR
Transfer the contents of the WCR
pointed to by P
pointed to by R
Transfer the contents of the Data
Registers pointed to by R
pots to their respective WCR
Transfer the contents of all WCRs to their
respective data Registers pointed to by
R
Enable Increment/decrement of the
WCR pointed to by P
1
–R
Characteristics subject to change without notice.
0
1
of all four pots
t
–P
CLWV
0
and R
Operation
1
1
1
1
–P
–P
–P
–R
1
0
0
0
0
–R
and R
and R
to the Register
1
–P
0
1
1
0
–P
–P
1
–R
1
1
–R
–R
0
0
0
0
0
of all four
to its
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