Measurement-computing PCI-COM232 Manuale Utente Scaricare il pdf (Pagina 18)

14

4.2.5 PORT4 CLOCK SELECT / INTERRUPT STATUS

BADR5 + 07 hex

READ

76543210

--PORT4

CKSEL1

PORT4

CKSEL0

INT4 INT3 INT2 INT1

WRITE

76543210

--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

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 24

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