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BAUD RATE SELECTION
The 16450 or 16550 UART determines the baud rate of the serial output
using a combination of the clock input frequency and the value written to the
divisor latches. Standard personal computer serial interfaces use an input clock of
1.8432 MHz. A table of baud rates available is given in Figure 22.
2.86256000
-338400
-619200
-129600
-167200
-244800
-323600
-482400
0.69582000
-641800
-961200
-192600
-384300
-768150
0.0261047110
-153675
-230450
ERROR BETWEEN DESIRED AND ACTUAL
VALUES (%)
DIVISOR LATCH
VALUE
DESIRED BAUD
RATE
Figure 22 --- Divisor Latch settings for common baud rates
using 1.8432 MHz input clock
Quatech ES-100D User's Manual 23