CAT5221 Datasheet, PDF (12/16 Pages) Catalyst Semiconductor – Dual Digitally Programmable Potentiometers (DPP) with 64 Taps and 2-wire Interface

CAT5221
INSTRUCTION FORMAT (continued)
Global Transfer Data Register (DR) to Wiper Control Register (WCR)
S _{DEVICE ADDRESS} A
INSTRUCTION ^{A S}
T
A
0
1 0 1 A3 A2 A1 A0
C
K
00
0 1 0 0 R1 R0
C
K
T
O
R
P
T
Global Transfer Wiper Control Register (WCR) to Data Register (DR)
S _{DEVICE ADDRESS} A
INSTRUCTION ^{A S}
T
A
0
1 01
A3 A2 A1 A0
C
K
C
1 0 0 0 0 0 R1 R0 _K
T
O
R
P
T
Transfer Wiper Control Register (WCR) to Data Register (DR)
S _{DEVICE ADDRESS} A
INSTRUCTION
AS
T
A
0
1
01
A3 A2 A1 A0
C
K
11
10
0 P0
R1R0
C
K
T
O
R
P
T
Transfer Data Register (DR) to Wiper Control Register (WCR)
S _{DEVICE ADDRESS} A
INSTRUCTION
AS
T
A
0
1
01
A3 A2 A1 A0
C
K
11
01
0
P0 R1R0
C
K
T
O
R
P
T
Increment (I)/Decrement (D) Wiper Control Register (WCR)
S _{DEVICE ADDRESS}
A _INSTRUCTION
A
T
A
0
1 0 1 A3 A2 A1 A0
C
K
00
10
0 P0 0 0
C
K ^{I/D I/D}
R
T
DATA
•••
AS
I/D I/D
C
K
T
O
P
Notes:
(1) Any write or transfer to the Non-volatile Data Registers is followed by a high voltage cycle after a STOP has been issued.
Document No. 2113, Rev. I
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