X9118_14 Datasheet, PDF (8/17 Pages) Intersil Corporation – Single Digitally-Controlled Potentiometer

X9118
SCL
SDA
01 0 1
0
00
S ID3 ID2 ID1 ID0
T
A
R
DEVICE ID
T
0 A1 A0 R/W
INTERNAL
ADDRESS
A I2 I1 I0 0
C
K _INSTRUCTION
OPCODE
RB RA 0
REGISTER
ADDRESS
AS
CT
KO
P
FIGURE 3. TWO-BYTE INSTRUCTION SEQUENCE
SCL
SDA
0 101 0
0
0X X0 0
X X XX X X
S ^{ID3 ID2 ID1 ID0 0 A1 A0 R/W} A I2 ^{I1 I0 0 RB RA 0}
A
T
C
C
A
R
DEVICE ID
T
INTERNAL ^K INSTRUCTION REGISTER
ADDRESS
OPCODE
ADDRESS
K
WW ^A W W WWW W W WA S
CC C C C CCC C C CC T
RR K R R RRR R R RK O
98
7 6 543 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
R _{0 1 0 1 0 A1 A0}
T
INSTRUCTION
S
OPCODE
A
C
K ^{1 00 0}
REGISTER
WIPER POSITION
WIPER POSITION
ADDRESSES _S (SENT BY SLAVE ON SDA) _M (SENT BY SLAVE ON SDA) _{M S}
A
W W ^A W WW W W W W W ^{A T}
000
0
C
K ^XXX
X
X
X
C
R
C ^C C CC
R ^K R RR
C
R
C
R
C
R
C
R
C ^CO
R ^KP
98
765 4 3 2 1 0
Write Wiper Counter Register (WCR)
S ^{DEVICE TYPE}
T ^IDENTIFIER
A
R
T^{0 1 01}
DEVICE
ADDRESSES
0 A1 A0
INSTRUCTION
S OPCODE
A
C
K1 0 1 0
REGISTER
ADDRESSES
000 0
WIPER POSITION
S (SENT BY MASTER ON SDA)
A
C
KX
WW
X
XX
X
X
C
R
C
R
98
WIPER
POSITION
S (SENT BY MASTER ON SDA) S S
A
AT
C ^{W W W W W W W W} CO
K ^{C C C C C C C C} KP
RRR R R R R R
765 4 3 2 1 0
Read Data Register (DR)
DEVICE TYPE
S IDENTIFIER
DEVICE
ADDRESSES
T
A
R _{0 1 0 1 0 A1 A0}
T
INSTRUCTION
REGISTER
WIPER POSITION
WIPER POSITION OR DATA
S
OPCODE
ADDRESSES
S ^{(SENT BY SLAVE ON SDA)} _M ^{(SENT BY SLAVE ON SDA)} M S
A
A
WW A WWWWWWWWAT
C
K
1
01
0
RB
RA
0
0
C
K
X
X
X
X
X
X
C
R
C^C
R^K
C
R
C
R
C
R
CC
RR
C
R
C
R
C ^CO
R ^KP
98
76543210
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8
FN8161.5
April 9, 2014