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X9258TV24I Datasheet(PDF) 6 Page - Xicor Inc.

Part # X9258TV24I
Description  Quad Digital Controlled Potentiometers (XDCP)
Download  22 Pages
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Manufacturer  XICOR [Xicor Inc.]
Direct Link  http://www.xicor.com
Logo XICOR - Xicor Inc.

X9258TV24I Datasheet(HTML) 6 Page - Xicor Inc.

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X9258
Characteristics subject to change without notice.
6 of 22
REV 1.1.7 2/4/03
www.xicor.com
Table 1. Instruction Set
Note:
(1) 1/0 = data is one or zero
Figure 4. Three-Byte Instruction Sequence
Instruction
Instruction Set
Operation
I3
I2
I1
I0
R1
R0
P1
P0
Read Wiper Counter
Register
1
0
0
1
0
0
1/0
1/0
Read the contents of the Wiper Counter Regis-
ter pointed to by P1–P0
Write Wiper Counter
Register
1
0
1
0
0
0
1/0
1/0
Write new value to the Wiper Counter Register
pointed to by P1–P0
Read Data Register
1
0
1
1
1/0
1/0
1/0
1/0
Read the contents of the Data Register pointed
to by P1–P0 and R1–R0
Write Data Register
1
1
0
0
1/0
1/0
1/0
1/0
Write new value to the Data Register pointed to
by P1–P0 and R1–R0
XFR Data Register to
Wiper Counter Regis-
ter
1
1
0
1
1/0
1/0
1/0
1/0
Transfer the contents of the Data Register point-
ed to by P1–P0 and R1–R0 to its associated Wip-
er Counter Register
XFR Wiper Counter
Register to Data
Register
1
1
1
0
1/0
1/0
1/0
1/0
Transfer the contents of the Wiper Counter Reg-
ister pointed to by P1–P0 to the Data Register
pointed to by R1–R0
Global XFR Data
Registers to Wiper
Counter Registers
0
0
0
1
1/0
1/0
0
0
Transfer the contents of the Data Registers
pointed to by R1–R0 of all four pots to their re-
spective Wiper Counter Registers
Global XFR Wiper
Counter Registers
to Data Register
1
0
0
0
1/0
1/0
0
0
Transfer the contents of both Wiper Counter
Registers to their respective data Registers
pointed to by R1–R0 of all four pots
Increment/Decrement
Wiper Counter Regis-
ter
0
0
1
0
0
0
1/0
1/0
Enable Increment/decrement of the Control
Latch pointed to by P1–P0
S
T
A
R
T
0
1
0
1
A3 A2 A1 A0 A
C
K
I3
I2
I1 I0
R1 R0 P1 P0 A
C
K
SCL
SDA
S
T
O
P
A
C
K
D7
D6 D5 D4 D3 D2
D1 D0


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