X9259_07 INTERSIL [Intersil Corporation], X9259_07 Datasheet - Page 12

• Manufacturer Part Number: X9259_07
• Description: Quad Digitally-Controlled Potentiometers
• Manufacturer: INTERSIL [Intersil Corporation]

Global XFR Wiper Counter Register (WCR) to Data Register (DR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Increment/Decrement Wiper Counter Register (WCR)
Notes: (1) “MACK”/”SACK”: stands for the acknowledge sent by the Master/Slave.
R
R
S
T
A
T
S
T
A
R
T
S
T
A
T
S
A
R
T
T
Device Type
0
0
0 1 0 1 A3 A2 A1 A0
0
Device Type
Device Type
Device Type
Identifier
Identifier
Identifier
(2) “A3 ~ A0”: stands for the device addresses sent by the master.
(3) “X”: indicates that it is a “0” for testing purpose but physically it is a “don’t care” condition.
(4) “I”: stands for the increment operation, SDA held high during active SCL phase (high).
(5) “D”: stands for the decrement operation, SDA held low during active SCL phase (high).
Identifier
1
1
1
0
0
0
1 A3 A2 A1 A0
1 A3 A2 A1 A0
1 A3 A2 A1 A0
Addresses
Addresses
Addresses
Device
Addresses
Device
Device
Device
12
S
A
C
K
C
S
A
K
S
A
C
K
S
A
C
K
0 0 1 0 0 0
Instruction
1 0 0 0 RB RA 0 0
Instruction
1 1 1 0 RB RA P1 P0
Opcode
Instruction
1 1 0 1 RB RA P1 P0
Instruction
Opcode
Opcode
Opcode
Addresses
Addresses
DR/WCR
DR/WCR
Addresses
Addresses
X9259
DR/WCR
DR/WCR
P1
P0
S
A
C
K
S
A
C
K
S
A
C
K
C
S
A
K
O
S
T
P
I/D I/D .
O
S
T
P
O
S
P
T
(Sent by Master on SDA)
HIGH-VOLTAGE
Increment/Decrement
WRITE CYCLE
HIGH-VOLTAGE
WRITE CYCLE
.
.
. I/D I/D
O
S
P
T
April 13, 2007
FN8169.5