X9448-2.7 XICOR [Xicor Inc.], X9448-2.7 Datasheet - Page 6

• Manufacturer Part Number: X9448-2.7
• Description: Mixed Signal with 2-Wire Interface
• Manufacturer: XICOR [Xicor Inc.]

X9448
Figure 5. Increment/Decrement Command Sequence
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 P
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 P
Read Data Register (DR)
Read the contents of the Register pointed to by P
Definitions:
SACK – Slave acknowledge, MACK – Master acknowledge, I/O – Increment/Decrement (I/O), R – Register,
P – Potentiometer
REV 1.0 6/21/00
S
A
R
S
A
R
S
T
A
R
T
SCL
SDA
T
T
T
T
device type
0 1 0 1
device type
0 1 0 1
device type
0 1 0 1
identifier
identifier
identifier
S
T
A
R
T
0
A
3
1
addresses
A
A
3
3
addresses
addresses
device
device
device
A
2
A
A
2
2
0
A
1
A
A
1
1
1
A
0
A
A
0
0
A3 A2 A1 A0
S
A
C
K
C
C
S
A
K
S
A
K
1 0 1 1
instruction
1 0 0 1 0 0
1 0 1 0 0 0
instruction
instruction
opcode
opcode
opcode
A
C
K
WCR/ACR/DR
R
1
WCR/ACR
WCR/ACR
addresses
addresses
1
addresses
I3
-P
R
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0
0
I2
and R
P
P
1
1
P
1
I1
P
P
0
0
P
P1 P0: 00-WCR0, 01 - WCR1
P1 P0: 10-ACR0, 11 - ACR1
P1 P0: 00-WCR0, 01 - WCR1
P1 P0: 10-ACR0, 11 - ACR1
0
R1 R0: 00-R0, 10-R1
1
-R
S
A
C
K
S
A
C
K
I0
0
C
S
A
K
.
0 0
(sent by master on SDA)
0 0
P1 P0 R1 R0 A
(sent by slave on SDA)
(sent by master on SDA)
0 0
01-R2, 11-R3
register data
register data
D
D
5
5
register data
D
5
X
D
D
4
4
D
4
D
D
X
3
3
D
3
Characteristics subject to change without notice.
D
D
2
2
C
K
D
2
D
D
1
1
D
1
N
C
1
I
D
D
0
1
0
D
0
-P
N
C
2
I
M
C
C
A
K
S
A
K
0
M
C
A
K
.
O
O
1
S
P
S
P
T
T
O
S
T
P
-P
0
N
C
n
I
.
D
E
C
1
D
E
C
n
6 of 20
O
S
T
P