7

FN8164.1

September 15, 2005

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

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

TABLE 1. INSTRUCTION SET

INSTRUCTION

INSTRUCTION FORMAT

OPERATION

Read WCR

1001

1/0

X

Write WCR

1010

1/0

1/0

X

X

Read Data

Register

1011

1/0

1/0

1/0

1/0

Write Data

Register

1100

1/0

1/0

1/0

1/0

XFR Data

Register to WCR

1101

1/0

1/0

1/0

1/0

to its associated WCR

XFR WCR to

Data Register

1110

1/0

1/0

1/0

1/0

Global XFR

Data Register to

WCR

0001

X

X

1/0

1/0

four pots to their respective WCR

Global XFR

WCR to Data

Register

1000

X

X

1/0

1/0

Transfer the contents of all WCRs to their respective data Registers

Increment/

Decrement

Wiper

0010

1/0

1/0

X

X

SCL from

Data Output

from Transmitter

1

89

START

Acknowledge

Master

Data Output

from Receiver

FIGURE 7. ACKNOWLEDGE RESPONSE FROM RECEIVER

X9241A