x9268us24c7979 Intersil Corporation, x9268us24c7979 Datasheet - Page 9

• Manufacturer Part Number: x9268us24c7979
• Description: Dual Digitally Controlled Xdcp? Potentiometers
• Manufacturer: Intersil Corporation

Table 1. Identification Byte Format
Table 2. Instruction Byte Format
Table 3. Instruction Set
Note: 1/0 = data is one or zero
Read Wiper Counter
Register
Write Wiper Counter Register
Read Data Register
Write Data Register
XFR Data Register to Wiper
Counter Register
XFR Wiper Counter Register
to Data Register
Global XFR Data Registers to
Wiper Counter Registers
Global XFR Wiper Counter
Registers to Data Register
Increment/Decrement Wiper
Counter Register
(MSB)
(MSB)
ID3
I3
0
Instruction
ID2
I2
1
Device Type
Instruction
Identifier
Opcode
9
ID1
I1
0
I3
1
1
1
1
1
1
0
1
0
I2
0
0
0
1
1
1
0
0
0
ID0
I0
1
I1
0
1
1
0
0
1
0
0
1
Instruction Set
I0
1
0
1
0
1
0
1
0
0
RB
A3
RB RA
1/0
1/0
1/0
1/0
1/0
1/0
0
0
0
Selection
X9268
Register
Data
1/0
1/0
1/0
1/0
1/0
1/0
0
0
0
RA
A2
Slave Address
0
0
0
0
0
0
0
0
0
0
1/0 Read the contents of the Wiper Counter
1/0 Write new value to the Wiper Counter
1/0 Read the contents of the Data Register
1/0 Write new value to the Data Register
1/0 Transfer the contents of the Data Register
1/0 Transfer the contents of the Wiper Counter
1/0 Enable Increment/decrement of the Control
P0
0
0
A1
Register pointed to by P0
Register pointed to by P0
pointed to by P0 and RB - RA
pointed to by P0 and RB - RA
pointed to by P0 and RB - RA to its
associated Wiper Counter Register
Register pointed to by P0 to the Data
Register pointed to by RB - RA
Transfer the contents of the Data Registers
pointed to by RB - RA of all four pots to their
respective Wiper Counter Registers
Transfer the contents of both Wiper Counter
Registers to their respective data Registers
pointed to by RB - RA of all four pots
Latch pointed to by P0
0
(WCR Selection)
Pot Selection
(LSB)
(LSB)
P0
A0
Operation
August 29, 2006
FN8172.4