[General] MAX3107 SPI UART baud rate settings

[rehakmatej]

Hello, I am using MAX3107 SPI UART ic in my hardware where baud rate must be selectable from standard values 9.6 kb/s to 12 Mb/s. My question is that MAX3107 is able to generate baud rate for all these UART speeds with fixed frequency oscillator or will I have to use programmable clock generator?
Thank you for answers.

 

[KlausST]

Hi,

At first you need to define all the baud rates...

Then
I'd use the prime numbers method on your baud rates.
Or simply excel

Klaus

 

[rehakmatej]

Thank you for reply.
Baud rates used in my application are used in Profibus standard (9.6 kb/s, 19.2 kb/s, 31.25 kb/s, 45.45 kb/s, 93.75 kb/s, 187.5 kb/s, 500 kb/s, 1.5 Mb/s, 3 Mb/s, 6 Mb/s, 12 Mb/s).

 

[doraemon]

Hello!
First of all, did you read the documentation? There is an extensive explanation about the baud rate
generation. What I can tell you is that there is a baud rate generator, and that it's adjustable.
Now if you want ALL your baud rates to be achievable, then read the doc and do your math.
And if you experiment and something doesn't work, it will be time to come here and to explain
your problem.
Dora.