BDM-610000087 Rev A
Chapter 4: Using the cpuModule 61
Non-Standard Serial Port Modes
It is possible to change the input clock rate for the UARTs of the cpuModule to allow the serial ports to
operate at higher speeds than 115,200 bps. This is accomplished by modifying the baud rate multiplier for
each serial port.
Non-standard baud rates are supported for all COM port modes of the CMA24BT. :
To set an alternate maximum baud rate for a serial port, write the value which corresponds to the desired
multiplier to the port’s baud rate multiplier register:
Table 31 Baud Rate Multiplier Registers
Connector
Port
Address Range
(hex)
CN7 (A)
COM 1
EE0–EE1h
CN7 (B)
COM 3
EE2–EE3h
CN8 (A)
COM 2
EE4–EE5h
CN8 (B)
COM 4
EE6–EE7h
Table 32 Baud Rade Multipliers
Value
Maximum Baud Rate
bps
Multiplier
0x0E28
115,200
1x
0x38A0
460,800
4x
0x713F
921,600
8x
0x7AE1
1,000,000
8.7x
Note
When using the non-standard high speed serial port modes, it is highly recommended
to use hardware flow control, whenever possible.
Summary of Contents for cpuModules CMA24BT
Page 3: ...Accessing the Analog World www rtd com ISO9001 and AS9100 CMA24BT cpuModules...
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Page 6: ...vi CMA24BT cpuModule BDM 610000087 Rev A...
Page 66: ...56 CMA24BT cpuModule BDM 610000087 Rev A...
Page 87: ...BDM 610000087 Rev A Chapter 4 Using the cpuModule 77...
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Page 94: ...84 CMA24BT cpuModule BDM 610000087 Rev A Figure 11 CMA24BTQ1910 Heatsink Edge near PCIe 104...
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Page 111: ...BDM 610000087 Rev A Appendix C IDAN Dimensions and Pinout 101...
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