x9271uvi-2.7 Intersil Corporation, x9271uvi-2.7 Datasheet - Page 11

• Manufacturer Part Number: x9271uvi-2.7
• Description: Single Digitally-controlled Xdcp? Potentiometer
• Manufacturer: Intersil Corporation

Figure 5. Increment/Decrement Instruction Sequence
Figure 6. Increment/Decrement Timing Limits
Table 6. Instruction Set
Note:
Read Wiper Counter
Register
Write Wiper Counter
Register
Read Data Register
Write Data Register
XFR Data Register to
Wiper Counter Register
XFR Wiper Counter
Register to Data Register
Increment/Decrement
Wiper Counter Register
Read Status (WIP bit)
SCL
SI
CS
1/0 = data is one or zero
Instruction
ID3 ID2 ID1 ID0
0
Device ID
1
SCK
V W
SI
0
1
INC/DEC CMD ISSUED
11
0
0
I3
1
1
1
1
1
1
0
0
0
0
Internal
Address
A1 A0
I2
0
0
0
1
1
1
0
1
I1
0
1
1
0
0
1
1
0
Instruction Set
VOLTAGE OUT
I3
I0
1
0
1
0
1
0
0
1
Instruction
Opcode
I2
RB
1/0
1/0
1/0
1/0
0
0
0
0
I1 I0
X9271
RA
1/0
1/0
1/0
1/0
0
0
0
0
RA RB
Register
Address
1/0
1/0
P
0
0
0
0
0
0
1
P1
0
1/0
1/0
1/0
1/0
P
Address
Pot/Bank
0
0
0
1
0
P0
0
t WRID
Read the contents of the Wiper Counter
Register
Write new value to the Wiper Counter
Register
Read the contents of the Data Register
pointed to by P1 - P0 and RB - RA
Write new value to the Data Register
pointed to by P1 - P0 and RB - RA
Transfer the contents of the Data Register
pointed to by RB - RA (Bank 0 only) to the
Wiper Counter Register
Transfer the contents of the Wiper Counter
Register to the Register pointed to by RB-RA
(Bank 0 only)
Enable Increment/decrement of the Wiper
Counter Register
Read the status of the internal write cycle, by
checking the WIP bit.
N
C
1
I
N
C
2
I
Operation
N
C
n
I
D
E
C
1
D
E
C
n
November 22, 2005
FN8174.2