X9428_06 Datasheet, PDF (9/21 Pages) Intersil Corporation – Single Digitally Controlled Potentiometer

X9428
Figure 7. Acknowledge Response from Receiver
SCL from
Master
1
Data Output
from Transmitter
Data Output
from Receiver
START
Figure 8. Detailed Potentiometer Block Diagram
8
9
Acknowledge
Serial Data Path
From Interface
Circuitry
Register 0
8
Register 2
If WCR = 00[H] then V_W/R_W = V_L/R_L
If WCR = 3F[H] then V_W/R_W = V_H/R_H
Serial
Bus
Input
C
Register 1
o
u
6
Parallel
Bus
Input
n
t
e
r
Register 3
Wiper
Counter
D
Register
e
(WCR)
c
o
d
e
UP/DN
INC/DEC
Logic
UP/DN
Modified SCL
CLK
V_H/R_H
V_L/R_L
V_W/R_W
9
FN8197.1
April 26, 2006