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X9420 Datasheet, PDF (9/20 Pages) Xicor Inc. – Single Digitally Controlled (XDCP) Potentiometer
X9420
Transfer Wiper Counter Register (WCR) to Data Register (DR)
CS
Falling
Edge
device type
identifier
0101
device
addresses
1
1
0
A
0
instruction
opcode
1110
register
addresses
R
1
R
0
0
0
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
Increment/Decrement Wiper Counter Register (WCR)
device type device instruction
increment/decrement
CS
identifier addresses
Falling
opcode
(sent by master on SDA)
CS
Rising
Edge
0
1
0
1
1
1
0
A
0
0
0
1
0
0
0
0
0
I/D I/D
.
.
.
.
I/D I/D
Edge
Read Status
device type device instruction
Data Byte
CS identifier addresses opcode
(sent by X9420 on SO) CS
Falling
Edge
0
1
0
1
1
1
0
A
0
0
1
0
1
0
0
0
1
0
0
0
0
0
0
W Rising
0 I Edge
P
REV 1.1.6 7/30/02
www.xicor.com
Characteristics subject to change without notice. 9 of 20