X9241A_07 Datasheet, PDF (6/16 Pages) Intersil Corporation – Quad Digital Controlled Potentionmeters (XDCP™)

X9241A
SCL
SDA
S0
T
A
R
T
10
1 A3 A2 A1 A0 A I3 I2
C
K
I1 I0 P1 P0 R1 R0 _{A CM} DW D5 D4 D3 D2 _{D1 D0 A} S
C
CT
K
KO
P
FIGURE 4. THREE-BYTE INSTRUCTION SEQUENCE
SCL
SDA
XX
S 0 1 0 1 A3 A2 A1 A0 A I3 I2 I1 I0 P1 P0 R1 R0 A I
I
T
C
CN _N
A
K
KC _C
R
12
T
FIGURE 5. INCREMENT/DECREMENT INSTRUCTION SEQUENCE
ID
NE
CC
n1
DS
ET
CO
nP
INC/DEC
CMD
ISSUED
SCL
SDA
t_CLWV
V_W/R_W
VOLTAGE OUT
FIGURE 6. INCREMENT/DECREMENT TIMING LIMITS
TABLE 1. INSTRUCTION SET
INSTRUCTION FORMAT
INSTRUCTION I₃ I₂ I₁ I₀ P₁
P₀
R₁
R₀
OPERATION
Read WCR
1
0
0
1 1/0 1/0
X
(Note 1)
(Note 2)
X
Read the contents of the Wiper Counter Register pointed to by P₁ to P₀
Write WCR
Read Data
Register
Write Data
Register
1 0 1 0 1/0 1/0
X
X Write new value to the Wiper Counter Register pointed to by P₁ to P₀
1 0 1 1 1/0 1/0 1/0 1/0 Read the contents of the Register pointed to by P₁ to P₀ and R₁ to R₀
1 1 0 0 1/0 1/0 1/0 1/0 Write new value to the Register pointed to by P₁ to P₀ and R₁ to R₀
6
FN8164.6
August 31, 2007