X9420 Datasheet, PDF (6/20 Pages) Xicor Inc. – Single Digitally Controlled (XDCP) 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
0 0 D5 D4 D3 D2 D1 D0
Figure 6. Three-Byte Instruction Sequence (Read)
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
CS
SCK
Don’t Care
0 0 D5 D4 D3 D2 D1 D0
SI
0 1 0 1 1 1 0 A0
I3 I2 I1 I0 0 0 0 0
II
ID
D
NN
NE
E
CC
CC
C
12
n1
n
Figure 8. Increment/Decrement Timing Limits
SCK
t_WRID
SI
V_W
Voltage Out
INC/DEC CMD Issued
REV 1.1.6 7/30/02
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Characteristics subject to change without notice. 6 of 20