X9269_07 Datasheet, PDF (9/24 Pages) Intersil Corporation – Dual Digitally-Controlled Potentiometers

Table 1. Identification Byte Format
Device Type
Identifier
ID3
ID2
ID1
ID0
0
1
0
1
(MSB)
X9269
Slave Address
A3
A2
A1
A0
(LSB)
Table 2. Instruction Byte Format
Instruction
Opcode
I3
I2
I1
I0
(MSB)
Register
Selection
RB
RA
Pot Selection
(WCR Selection)
0
P0
(LSB)
Table 3. Instruction Set
Instruction Set
Instruction
I3 I2 I1 I0 RB RA 0 P0
Operation
Read Wiper Counter
Register
1 0 0 1 0 0 0 1/0 Read the contents of the Wiper Counter
Register pointed to by P0
Write Wiper Counter Register 1 0 1 0 0 0 0 1/0 Write new value to the Wiper Counter
Register pointed to by P0
Read Data Register
1 0 1 1 1/0 1/0 0 1/0 Read the contents of the Data Register
pointed to by P0 and RB - RA
Write Data Register
1 1 0 0 1/0 1/0 0 1/0 Write new value to the Data Register
pointed to by P0 and RB - RA
XFR Data Register to Wiper
Counter Register
1 1 0 1 1/0 1/0 0 1/0 Transfer the contents of the Data Register
pointed to by P0 and RB - RA to its
associated Wiper Counter Register
XFR Wiper Counter Register 1 1 1 0 1/0 1/0 0 1/0 Transfer the contents of the Wiper Counter
to Data Register
Register pointed to by P0 to the Data
Register pointed to by RB - RA
Global XFR Data Registers to 0 0 0 1 1/0 1/0 0 0 Transfer the contents of the Data Registers
Wiper Counter Registers
pointed to by RB - RA of all four pots to their
respective 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 RB - RA of all four pots
Increment/Decrement Wiper 0 0 1 0 0 0 0 1/0 Enable Increment/decrement of the Control
Counter Register
Latch pointed to by P0
Note: 1/0 = data is one or zero
9
FN8173.4
April 17, 2007