X9261_06 Datasheet, PDF (11/20 Pages) Intersil Corporation – Dual Digitally-Controlled Potentiometers

X9261
Write Data Register (DR)
Device Type Device Instruction DR and WCR
Data Byte
Identifier Addresses Opcode
CS
Addresses
(Sent by Host on SI)
CS
Falling
Edge ₀
1
0 1 0 0 A1 A0 1 1 0 0 RB RA
0
P0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Rising
Edge
Global Transfer Data Register (DR) to Wiper Counter Register (WCR)
CS
Falling
Edge
Device Type
Identifier
0101
Device
Addresses
0 0 A1 A0
Instruction
Opcode
0001
DR
Addresses
RB RA 0 0
CS
Rising
Edge
Global Transfer Wiper Counter Register (WCR) to Data Register (DR)
CS ^{Device Type Device}
Instruction
DR
CS
Falling ^Identifier
Addresses
Opcode
Addresses _Rising
Edge _{0 1 0 1 0 0 A1 A0 1 0 0 0 RB RA 0 0} Edge
HIGH-VOLTAGE
WRITE CYCLE
Transfer Wiper Counter Register (WCR) to Data Register (DR)
CS ^{Device Type Device}
Instruction DR and WCR _CS
Falling ^{Identifier Addresses Opcode}
Addresses _Rising
Edge _{0 1 0 1 0 0 A1 A0 1 1 1 0 RB RA 0 P0} Edge
HIGH-VOLTAGE
WRITE CYCLE
Transfer Data Register (DR) to Wiper Counter Register (WCR)
CS ^{Device Type}
Device
Instruction DR and WCR _CS
Falling ^Identifier
Addresses
Opcode
Addresses _Rising
Edge _{0 1 0 1 0 0 A1 A0 1 1 0 1 RB RA 0 P0} Edge
Increment/Decrement Wiper Counter Register (WCR)
CS ^{Device Type}
Device
Instruction
WCR
Increment/Decrement
CS
Falling ^Identifier
Addresses
Opcode
Addresses
(Sent by Master on SDA) _Rising
Edge _{0 1 0 1 0 0 A1 A0 0 0 1 0 X X 0 P0 I/D I/D . . . . I/D I/D} Edge
Read Status Register (SR)
CS ^{Device Type}
Device
Instruction
WCR
Data Byte
Falling ^Identifier
Addresses
Opcode Addresses
(Sent by X9261 on SO)
Edge _{0 1 0 1 0 0 A1 A0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 WIP}
CS
Rising
Edge
Notes: (1) “A1 ~ A0”: stands for the device addresses sent by the master.
(2) WPx refers to wiper position data in the 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).
11
FN8171.4
October 12, 2006