X9401_09 Datasheet, PDF (6/18 Pages) Intersil Corporation – Quad, 64 Tap, Digitally Controlled Potentiometer (XDCP™)

X9401
CS
SCK
SI
0 1 0 1 0 0 A1 A0
I3 I2 I1 I0 R1 R0 P1 P0
FIGURE 3. TWO-BYTE COMMAND SEQUENCE
CS
SCL
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 4. THREE-BYTE COMMAND SEQUENCE (WRITE)
CS
SCL
SI
S0
CS
SCK
0 1 0 1 0 0 A1 A0
I3 I2 I1 I0 R1 R0 P1 P0
DON’T CARE
0 0 D5 D4 D3 D2 D1 D0
FIGURE 5. THREE-BYTE COMMAND SEQUENCE (READ)
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
FIGURE 6. INCREMENT/DECREMENT COMMAND SEQUENCE
6
FN8190.4
October 13, 2009