piclist 2000\05\27\115818a >
Thread: Microcontroller with 4 USARTs and 40 pins
www.piclist.com/techref/io/serials.htm?key=usart
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face BY : Dan Michaels email (remove spam text)



Edson wrote:
.........
>> And I suspect with the scenix, you actually could get the weird
>> 31250 rate you indicate here - or any other weird baudrate imaginable.
>> But whatcha gonna talk to at that speed?
>
>    31250bps isn't weird: 1,000,000 (instructions for second) / 31250 (bps)
>= 32 (instructions for serial bit).
>

Only weird viz-a-viz the "usual" baudrates, like 19200, 38400, 57600,
etc. For local networks, anything is a go. But I'm not sure whether
a PC, if used as a host, could accommodate anything like 31250. Depends
upon the internal clocks and USART h.w.

The scenix s.w. VP could probably be massaged to accommodate both 31250
and 38400, for example, if you try hard enough. 50Mhz/38400 = 1302 and
50Mhz/31250 = 1600.

- Dan

<1.5.4.16.20000527093922.1a2fd4ba@lynx.sni.net>

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Subject (change) Microcontroller with 4 USARTs and 40 pins

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