x9271uvi-2.7 Intersil Corporation, x9271uvi-2.7 Datasheet - Page 13

• Manufacturer Part Number: x9271uvi-2.7
• Description: Single Digitally-controlled Xdcp? Potentiometer
• Manufacturer: Intersil Corporation

Transfer Data Register (DR) to Wiper Counter Register (WCR)
Increment/Decrement Wiper Counter Register (WCR)
Read Status Register (SR)
Notes: (1) “A1 ~ A0”: stands for the device addresses sent by the master.
Falling
Falling
Falling
Edge
Edge
Edge
CS
CS
CS
(2) WCRx refers to wiper position data in the Wiper Counter Register
(2) “I”: stands for the increment operation, SI held HIGH during active SCK phase (high).
(3) “D”: stands for the decrement operation, SI held LOW during active SCK phase (high).
(4) “X:”: Don’t Care.
Device Type
0
Device Type
0
Device Type
0
Identifier
Identifier
Identifier
1
1
1
0
0
0
1 0 0 A1
1 0 0
1 0 0
Addresses
Addresses
Addresses
13
Device
Device
Device
A1
A1
A0 1 1 0 1 RB RA 0
A0
A0
0 0 1 0 X X 0 0 I/D I/D
0 1 0 1 0 0 0 1 0 0 0 0 0 0 0
Instruction
Instruction
Instruction
Opcode
Opcode
Opcode
Addresses
Addresses
DR/Bank
X9271
DR/Bank
Addresses
DR/Bank
0
(Sent by Master on SDA)
(Sent by X9271 on SO)
Rising
Edge
Increment/Decrement
CS
Data Byte
.
.
.
.
I/D I/D
WIP
Rising
Edge
Rising
CS
Edge
CS
November 22, 2005
FN8174.2