AD28msp01

REV. A

–8–

If any low-pass filter is bypassed, the resampling interpolation filter should be disabled (in Control Register 0.)

Control Register 2

address = 0x02

This register is used to:

• Select the frequency of the Receive baud clock (RBAUD)

• Select the frequency of the Receive bit clock (RBIT)

BI3-0

Receive bit rate clock selection

0000

=

9600 (default)

0001

=

8000

0010

=

7200

0011

=

4800

0100

=

2400

0101

=

1200

0110

=

600

0111

=

19200

1000

=

14400

1001

=

12000

1010

=

19200 with SA87 in

control register 1 set

(not scaled by 8/7)

0

0

0000

000

0

0

0

0

0

0

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

0

BA2-0

Receive baud rate clock selection

000

=

2400 (default)

001

=

1600

010

=

1200

011

=

600

100

=

Reserved

101

=

Reserved

110

=

Reserved

111

=

Reserved

Control Register 3

address = 0x03

This register is used to:

• Select the frequency of the Transmit baud clock (TBAUD)

• Select the frequency of the Transmit bit clock (TBIT)

BI3-0

Transmit bit rate clock selection

0000

=

9600 (default)

0001

=

8000

0010

=

7200

0011

=

4800

0100

=

2400

0101

=

1200

0110

=

600

0111

=

19200

1000

=

14400

1001

=

12000

1010

=

19200 with SA87 in

control register 1 set

(not scaled by 8/7)

0

0

0000

000

0

0

0

0

0

0

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

0

BA2-0

Transmit baud rate clock

selection

000

=

2400 (default)

001

=

1600

010

=

1200

011

=

600

100

=

Reserved

101

=

Reserved

110

=

Reserved

111

=

Reserved