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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
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