X9241A_06 Datasheet, PDF(7/16 Page) Intersil Corporation – Quad Digital Controlled Potentionmeters (XDCP™)

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X9241A_06 Datasheet, PDF (7/16 Pages) Intersil Corporation – Quad Digital Controlled Potentionmeters (XDCP™)

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X9241A

TABLE 1. INSTRUCTION SET

INSTRUCTION FORMAT

INSTRUCTION I3 I2 I1 I0 P1

P0 R1 R0

OPERATION

Read WCR

1 0 0 1 1/0(10) 1/0 X(11) X Read the contents of the Wiper Counter Register pointed to by P1 - P0

Write WCR

1 0 1 0 1/0 1/0 X

X Write new value to the Wiper Counter Register pointed to by P1 - P0

Read Data

1 0 1 1 1/0 1/0 1/0 1/0 Read the contents of the Register pointed to by P1 - P0 and R1 - R0

Write Data

1 1 0 0 1/0 1/0 1/0 1/0 Write new value to the Register pointed to by P1 - P0 and R1 - R0

XFR Data

1 1 0 1 1/0 1/0 1/0 1/0 Transfer the contents of the Register pointed to by P1 - P0 and R1 - R0

to its associated WCR

XFR WCR to

Data Register

1 1 1 0 1/0 1/0 1/0 1/0 Transfer the contents of the WCR pointed to by P1 - P0 to the Register

pointed to by R1 - R0

Global XFR

0001 X

Data Register to

WCR

X 1/0 1/0 Transfer the contents of the Data Registers pointed to by R1 - R0 of all

four pots to their respective WCR

Global XFR

WCR to Data

1000 X

X 1/0 1/0 Transfer the contents of all WCRs to their respective data Registers

pointed to by R1 - R0 of all four pots

Increment/

Decrement

Wiper

0 0 1 0 1/0 1/0 X

X Enable Increment/decrement of the WCR pointed to by P1 - P0

Notes: (10) 1/0 = data is one or zero

(11) X = Not applicable or donât care; that is, a data register is not involved in the operation and need not be addressed (typical)

SCL from

Master

Data Output

from Transmitter

Data Output

from Receiver

START

FIGURE 7. ACKNOWLEDGE RESPONSE FROM RECEIVER

Acknowledge

FN8164.5

December 14, 2006

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