X9460 Datasheet, PDF (7/16 Pages) Intersil Corporation – Dual Audio Control Digitally Controlled Potentiometer

X9460
INSTRUCTION
Read Wiper
Write Left Wiper Counter
Write Right Wiper Counter
Write Both Wiper Counters
TABLE 4. COMMAND SET
INSTRUCTION SET
I₃ I₂ I₁ I₀ X Z_D RT LT
OPERATION
LSB of Slave Byte=1, no command required
Slave will return Left then Right Data( not to be used with more
than one device on the 2-wire bus)
1 0 1 0 0 1/0 0 1 Write new value to the Wiper Counter Register
1 0 1 0 0 1/0 1 0 Write new value to the Wiper Counter Register
1 0 1 0 0 1/0 1 1 Write new value to the Wiper Counter Register
Inc/Dec Left Wiper Counter
0 0 1 0 0 1/0 0 1 Enable Increment/decrement of the Control Latch
Inc/Dec Right Wiper Counter 0 0 1 0 0 1/0 1 0 Enable Increment/decrement of the Control Latch
Inc/Dec Both Wiper Counters 0 0 1 0 0 1/0 1 1 Enable Increment/decrement of the Control Latch
Notes: “1/0” = data is one or zero
SCL
SDA
1
00
S 0 1 0 1 0 A1 A0 R/W A 0 0
T
C
A
K
R _{DEVICE TYPE}
T
IDENTIFIER
0
00 0
0
WW
CC
W
C
W
C
WA
CC
0
0
0
WW
CC
W
C
W
C
W
C
RR R R R ^K
RR R R R
43 2 1 0
43 2 1 0
LEFT POT
RIGHT POT
DATA BYTE
DATA BYTE
AS
CT
KO
P
FIGURE 4. THREE-BYTE COMMAND SEQUENCE (READ, SINGLE DEVICE ON THE 2-WIRE BUS ONLY)
SCL
SDA
0
1 01 0 0
0 00
WW W W W
S 0 1 0 1 0 A1 A0 R/W A I3 I2 I1 I0 0 ZD RT LT A 0 0 0 _{C C C C C} A S
T
C
A
K
R _{DEVICE TYPE}
C
K
RR
43
RR
21
R
0
CT
KO
P
T _IDENTIFIER
RIGHT or LEFT POT
INSTRUCTION BYTE
DATA BYTE
FIGURE 5. THREE-BYTE COMMAND SEQUENCE (WRITE)
7
FN8203.2
October 17, 2005