Measurement Computing PCI-COM232 User Manual

Page 18

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14

4.2.5

PORT4 CLOCK SELECT / INTERRUPT STATUS

BADR5 + 07 hex

READ

7

6

5

4

3

2

1

0

-

-

PORT4

CKSEL1

PORT4

CKSEL0

INT4

INT3

INT2

INT1

WRITE

7

6

5

4

3

2

1

0

-

-

PORT4

CKSEL1

PORT4

CKSEL0

-

-

-

-

CKSEL1:0

UART clock select. This allows transmission rates to 460.8 Kbaud and different data

rates on each port. These settings are per port:

CKSEL1

CKSEL0

UART CLOCK

Max Data Rate

0

0

1.8432 MHz

115.2 kbaud

0

1

3.6864 MHz

230.4 kbaud

1

0

7.3728 MHz

460.8 kbaud