8
FN8189.4
September 2, 2015
Figure 8. Increment/Decrement Timing Limits
Table 1. Instruction Set
Instruction
Instruction Set
OperationI
3
I
2
I
1
I
0
R
1
R
0
P
1
P
0
Read Wiper Counter Register 1 0 0 1 0 0 P
1
P
0
Read the contents of the Wiper Counter Register
pointed to by P
1
- P
0
Write Wiper Counter Register 1 0 1 0 0 0 P
1
P
0
Write new value to the Wiper Counter Register
pointed to by P
1
- P
0
Read Data Register 1 0 1 1 R
1
R
0
P
1
P
0
Read the contents of the Data Register pointed to
by P
1
- P
0
and R
1
- R
0
Write Data Register 1 1 0 0 R
1
R
0
P
1
P
0
Write new value to the Data Register pointed to by
P
1
- P
0
and R
1
- R
0
XFR Data Register to Wiper
Counter Register
1101R
1
R
0
P
1
P
0
Transfer the contents of the Data Register pointed to
by R
1
- R
0
to the Wiper Counter Register pointed to by
P
1
- P
0
XFR Wiper Counter Register
to Data Register
1110R
1
R
0
P
1
P
0
Transfer the contents of the Wiper Counter
Register pointed to by P
1
- P
0
to the Register
pointed to by R
1
- R
0
Global XFR Data Register to
Wiper Counter Register
0001R
1
R
0
0 0 Transfer the contents of the Data Registers pointed
to by R
1
- R
0
of all four pots to their respective Wiper
Counter Register
Global XFR Wiper Counter
Register to Data Register
1000R
1
R
0
0 0 Transfer the contents of all Wiper Counter
Registers to their respective data Registers
pointed to by R
1
- R
0
of all four pots
Increment/Decrement Wiper
Counter Register
00100 0P
1
P
0
Enable Increment/decrement of the Wiper Counter
Register pointed to by P
1
- P
0
Read Status (WIP bit) 0 1 0 1 0 0 0 1 Read the status of the internal write cycle, by
checking the WIP bit.
SCK
SI
V
W
/R
W
INC/DEC CMD Issued
t
WRID
Voltage Out
X9400
