X9448 Datasheet, PDF (6/19 Pages) Xicor Inc. – Mixed Signal with 2-Wire Interface

X9448
Figure 6. Instruction Set
Read Wiper Counter Register (WCR) or Analog Control Register (ACR)
Read the contents of the Wiper Counter Register or Analog Control Register pointed to by P₁ - P₀.
S device type
T identifier
A
device
addresses
S
A
instruction
opcode
WCR/ACR
addresses
S
A
register data
(sent by slave on SDA)
MS
AT
R
T
0
1
0
1
A
3
A
2
A
1
A
0
C
K
1
0
0
1
0
0
P
1
P
0
C
K
0
0
D
5
D
4
D
3
D
2
D
1
D
0
C
K
O
P
P1 P0: 00 - WCR0, 01 - WCR1
P1 P0: 10 - ACR0, 11 - ACR1
Write Wiper Counter Register (WCR) or Analog Control Register (ACR)
Write new value to the Wiper Counter Register or Analog Control Register pointed to by P₁ - P₀.
S device type
T identifier
A
device
addresses
S
A
instruction
opcode
WCR/ACR
addresses
S
A
register data
(sent by master on SDA)
S
A
S
T
R
T
0
1
0
1
A
3
A
2
A
1
A
0
C
K
1
0
1
0
0
0
P
1
P
0
C
K
0
0
D
5
D
4
D
3
D
2
D
1
D
0
C
K
O
P
P1 P0: 00 - WCR0, 01 - WCR1
P1 P0: 10 - ACR0, 11 - ACR1
Read Data Register (DR)
Read the contents of the Register pointed to by P₁ - P₀ and R₁ - R₀.
S device type
T identifier
device
addresses
S
A
instruction
opcode
WCR/ACR/DR
addresses
S
A
register data
(sent by master on SDA)
M
A
S
T
A
R
T
0
1
0
1
A
3
A
2
A
1
A
0
C
K
1
0
1
1
R
1
R
0
P
1
P
0
C
K
0
0
DDDDDDCO
5 4 3 2 1 0KP
R1 R0: 00 - R0, 10 - R1
01 - R2, 11 - R3
Definitions:
SACK – Slave acknowledge, MACK – Master acknowledge, I/O – Increment/Decrement (I/O), R – Register,
P – Potentiometer
6
FN8201.0
April 18, 2005