X9400 Datasheet, PDF (6/21 Pages) Xicor Inc. – Quad Digitally Controlled Potentiometers (XDCP)

Figure 4. Two-Byte Instruction Sequence
X9400
CS
SCK
SI
0 1 0 1 0 0 A1 A0 I3 I2 I1 I0 R1 R0 P1 P0
Figure 5. Three-Byte Instruction Sequence (Write)
CS
SCK
SI
0 1 0 1 0 0 A1 A0
I3 I2 I1 I0 R1 R0 P1 P0
0 0 D5 D4 D3 D2 D1 D0
Figure 6. Three-Byte Instruction Sequence (Read)
CS
SCK
SI
0 1 0 1 0 0 A1 A0
I3 I2 I1 I0 R1 R0 P1 P0
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 0 0 A1 A0
I3 I2 I1 I0 0 0 P1 P0
II
ID
D
NN
NE
E
CC
CC
C
12
n1
n
6
FN8189.1
March 31, 2005