X9241 Xicor, X9241 Datasheet - Page 6

• Manufacturer Part Number: X9241
• Description: Quad E2POT Nonvolatile Digital Potentiometer
• Manufacturer: Xicor

X9241
Table 1. Instruction Set
Notes: (7) 1/0 = data is one or zero
Figure 7. Acknowledge Response from Receiver
Read WCR
Write WCR
Read Data
Register
Write Data
Register
XFR Data Reg-
ister to WCR
XFR WCR to
Data Register
Global XFR Data
Register to WCR
Global XFR WCR
to Data Register
Increment/Decre-
ment Wiper
Instruction
(8) N/A = Not applicable or don't care; that is, a data register is not involved in the operation and need not be addressed (typical)
TRANSMITTER
SCL FROM
RECEIVER
MASTER
OUTPUT
OUTPUT
FROM
FROM
DATA
DATA
START
1
1
1
1
1
1
0
1
0
I
3
I
0
0
0
1
1
1
0
0
0
2
I
0
1
1
0
0
1
0
0
1
1
Instruction Format
1
I
1 1/0
0
1
0
1
0
1
0
0
0
N/A
N/A
1/0
1/0
1/0
1/0
1/0
1/0
P
1
(7)
N/A
N/A
1/0
1/0
1/0
1/0
1/0
1/0
1/0
P
0
6
N/A
N/A
N/A
1/0
1/0
1/0
1/0
1/0
1/0
R
(8)
1
N/A
N/A
N/A
1/0
1/0
1/0
1/0
1/0
1/0
R
o
Read the contents of the Wiper Counter
Register pointed to by P
Write new value to the Wiper Counter
Register pointed to by P
Read the contents of the Register
pointed to by P
Write new value to the Register
pointed to by P
Transfer the contents of the Register
pointed to by P
to its associated WCR
Transfer the contents of the WCR
pointed to by P
pointed to by R
Transfer the contents of all four Data
Registers pointed to by R
respective WCR
Transfer the contents of all WCRs
to their respective data Registers
pointed to by R
Enable Increment/decrement of the
WCR pointed to by P
8
ACKNOWLEDGE
Operation
1
1
1
1
1
1
–P
–P
–P
–P
–R
–R
9
0
0
0
0
0
0
and R
and R
and R
to the Register
1
–P
3864 ILL F14
1
1
0
–P
–P
1
–R
1
1
1
–R
–R
–R
0
0
0
3864 PGM T02.1
0
0
0
to their