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Altera_Forum's avatar
Altera_Forum
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20 years ago

UART Baud Rate

Does anybody know how to run a SOPC UART at slow baud rates, such as 100 Baud? I have some serial information coming in from an FSK demodulator ported to the data in on a standard UART. The problem...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Can you take the FSK demodulated data in as some other data stream like SPI or I2C? I hope that your FSK demodulated interface is well tested because I don't thing you'll find any UART on a computer running that slow (300 is the minimum I think)

With Quartus 4.2 SP1 and up there is clock crossing in SOPC Builder so you could put the UART on a really slow clock domain then the UART will divide it down (you'll stay in the 16bit realm of the divider). If this doesn't work (remember I haven't tested this since I have no clue how to test this) then I would look at the various other interfaces out there.