Contec BX220 Series - Baud Rate Settings and Watchdog Timer

6. Appendix
BX-220 User’s manual
77
Baud Rate Settings
A baud rate is set by software by dividing the clock input (1.8432MHz). The baud rate in terms of
hardware can be set to a maximum of 115,200 bps for SERIALA, B. The baud rates available in practice
depend on the operating environment (cable, software, etc.). The table below lists typical baud rates and
their respective values to be written to the divisor latch register (LSB, MSB).
Table 6.4 Baud Rate Settings
Baud rate to be set
SERIAL A, B
Clock input (1.8432MHz)
Value to be set
in the divisor register
(Decimal)
Setting error (%)
50 2304 ---
75 1536 ---
110
1047
0.026
134.5
857
0.058
150 768 ---
300
384
---
600
192
---
1200 96 ---
1800 64 ---
2000 58 0.69
2400
48
---
3600 32 ---
4800 24 ---
7200 16 ---
9600
12
---
14400
8
---
19200 6 ---
28800
4
---
38400
3
---
57600 2 ---
76800 --- ---
115200
1
---
153600
---
---
230400 --- ---
Example : To set 9,600 bps, write "00" to the (MSB) divisor latch register and "12 (decimal)" to the (LSB)
divisor latch register.