X9420_06 Datasheet, PDF (7/19 Pages) Intersil Corporation – Single Digitally Controlled Potentiometer

X9420
Figure 5. Three-Byte Instruction Sequence (Write)
CS
SCL
SI
0 1 0 1 1 1 0 A0
I3 I2 I1 I0 R1 R0 0 0
Figure 6. Three-Byte Instruction Sequence (Read)
0 0 D5 D4 D3 D2 D1 D0
CS
SCL
SI
0 1 0 1 1 1 0 A0
I3 I2 I1 I0 R1 R0 0 0
S0
Figure 7. Increment/Decrement Instruction Sequence
Don’t Care
0 0 D5 D4 D3 D2 D1 D0
CS
SCK
SI
0 1 0 1 1 1 0 A0
I3 I2 I1 I0 0 0 0 0
II
ID
D
NN
CC
N
C
E
C
E
C
12
n1
n
Figure 8. Increment/Decrement Timing Limits
SCK
t_WRID
SI
V_W
Voltage Out
INC/DEC CMD Issued
7
FN8195.1
April 26, 2006