X9119_08 Datasheet, PDF (8/17 Pages) Intersil Corporation – Single Digitally-Controlled (XDCP™) Potentiometer

X9119
SCL
SDA
01 0 1
0
00
S ID3 ID2 ID1 ID0 A2 A1 A0 R/W A I2 I0 I1 0
T
C
A
R
DEVICE ID
INTERNAL
ADDRESS
K _INSTRUCTION
OPCODE
T
RB RA 0
REGISTER
ADDRESS
FIGURE 3. TWO-BYTE INSTRUCTION SEQUENCE
AS
CT
KO
P
SCL
SDA
0 101
0
0X X0 0
X X XX X X
S ^{ID3 ID2 ID1 ID0 A2 A1 A0 R/W} A I2 ^{I1 I0 0 RB RA 0}
A
T
C
C
A
R
DEVICE ID INTERNAL
ADDRESS
T
KINSTRUCTION _REGISTER
OPCODE ADDRESS
K
W W A W W W WW W W WA S
C C _CC C C CC C C CC T
R R _KR R R RR R R RK O
98
7 6 5 43 2 1 0
P
WIPER OR DATA
POSITION
FIGURE 4. FOUR-BYTE INSTRUCTION SEQUENCE (WRITE OR READ FOR WCR OR DATA REGISTERS)
Instruction Format
READ WIPER COUNTER REGISTER (WCR)
DEVICE
TYPE
DEVICE
S ^{IDENTIFIER ADDRESSES}
T
A 0 1 0 1 A2 A1 A0
R
T
INSTRUCTION REGISTER
OPCODE ADDRESSES
S
A1 0 0 0 0 0 0 0
C
K
WIPER POSITION
(SENT BY SLAVE ON SDA)
WIPER POSITION
(SENT BY SLAVE ON SDA)
S
WWMWWWWWWWWM S
AXXXXXXCCACCCCCCCCAT
C
RRCRRRRRRRRCO
K
9 8K7 6 5 4 3 2 1 0KP
WRITE WIPER COUNTER REGISTER (WCR)
DEVICE
WIPER POSITION
WIPER POSITION
TYPE
DEVICE
INSTRUCTION REGISTER
(SENT BY MASTER ON
(SENT BY MASTER ON
S ^{IDENTIFIER ADDRESSES}
OPCODE ADDRESSES
SDA)
SDA)
T
S
S
WW S WWWWWWWW S S
A 0 1 0 1 A2 A1 A0
A 1 0 1 0 0 0 0 0 AXXXXXXC C A C C C C C C C C A T
R
C
C
RRCRRRRRRRRCO
T
K
K
9 8K7 6 5 4 3 2 1 0KP
READ DATA REGISTER (DR)
DEVICE
TYPE
DEVICE
INSTRUCTION REGISTER
WIPER POSITION
WIPER POSITION OR DATA
S ^{IDENTIFIER ADDRESSES}
OPCODE ADDRESSES
(SENT BY SLAVE ON SDA)
(SENT BY SLAVE ON SDA)
T
S
S
WWMWWWWWWWWM S
A 0 1 0 1 A2 A1 A0
A 1 0 1 0 RB RA 0 0 A X X X X X X C C A C C C C C C C C A T
R
C
C
RRCRRRRRRRRCO
T
K
K
9 8K7 6 5 4 3 2 1 0KP
8
FN8162.4
July 9, 2008