7

FN8163.1

September 14, 2005

Table 1. Instruction Set

Note:

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

Figure 7. Acknowledge Response from Receiver

Instruction

Instruction Format

Operation

Read WCR

1

0

0

1

0

1/0

N/A

Read the contents of the Wiper Counter Register

Write WCR

1

0

1

0

0

1/0

N/A

N/A

Write new value to the Wiper Counter Register

Read Data Register

1

0

1

1

0

1/0

1/0

1/0

Read the contents of the Register pointed to by

Write Data Register

1

1

0

0

0

1/0

1/0

1/0

XFR Data Register to

WCR

1

1

0

1

0

1/0

1/0

1/0

Transfer the contents of the Register pointed to

XFR WCR to Data

Register

1

1

1

0

0

1/0

1/0

1/0

Transfer the contents of the WCR pointed to by

Global XFR Data

Register to WCR

0

0

0

1

N/A

N/A

1/0

1/0

Transfer the contents of the Data Registers

respective WCR

Global XFR WCR

to Data Register

1

0

0

0

N/A

N/A

1/0

1/0

Transfer the contents of all WCRs to their

of both pots

Increment/Decrement

Wiper

0

0

1

0

0

1/0

N/A

N/A

Enable Increment/decrement of the WCR point-

SCL from

Data Output

1

89

START

Acknowledge

Master

from Transmitter

Data Output

from Receiver

X9221A