X9430 Datasheet, PDF (9/21 Pages) Xicor Inc. – Dual Digitally Controlled Potentiometer (XDCP™) with Operational Amplifier

X9430 – Preliminary Information
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Transfer the contents of the Register pointed to by R₁-R₀ to the WCR
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
1101
DR/WCR
addresses
R
1
R
0
0
P
0
CS
Rising
Edge
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Transfer the contents of the WCR to the Register pointed to by R₁-R₀
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
1110
DR/WCR
addresses
R
1
R
0
0
P
0
CS _HIGH-VOLTAGE
Rising
Edge
WRITE CYCLE
P₀: 0-WCR0, 1-WCR1
Increment/Decrement Wiper Counter Register (WCR)
Enable Increment/decrement of the WCR pointed to by P₁-P₀
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
0010
WCR
addresses
X
X
0
P
0
increment/decrement
(sent by master on SDA)
I/ I/
DD
.
.
.
.
I/
D
I/
D
CS
Rising
Edge
Global Transfer Data Register (DR) to Wiper Counter Register (WCR)
Transfer the contents of all four Data Registers pointed to by R₁-R₀ to their respective WCR
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
0001
DR
addresses
R
1
R
0
0
0
CS
Rising
Edge
Global Transfer Wiper Counter Register (WCR) to Data Register (DR)
Transfer the contents of all WCRs to their respective data Registers pointed to by R₁-R₀
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
1000
DR
addresses
R
1
R
0
0
0
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
Read Status
Returns the contents of the WIP bit which indicates if an internal write cycle is in progress
CS
Falling
Edge
device type
identifier
0101
device
addresses
0
0
A
1
A
0
instruction
opcode
0101
wiper
addresses
0001
Data Byte
(sent by X9430 on SO) _CS
W ^Rising
0 0 0 0 0 0 0 I ^Edge
P
REV 1.0 6/20/00
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Characteristics subject to change without notice. 9 of 21