Hellop Dmitry, usually one says, that a tolerance of approx. 2% betreen the baud rate of two communicating devices will be acceptable in general. Regards, Karsten Guillermo Prandi schrieb: >Most likely it will. It is not exactly "if LPC will handle it", but >more like whether the two parties will understand each other. In a >perfect world, you just need to multiply a bit's time times the number >of bits in your word (7, 8?) plus the start and the stop bits and see >if the stop bit ends reasonably in range (bits are compared at their >mid-point). Since the world is not so perfect, you must take into >account the rise and fall ramps of your transmission line as well. If >both devices are 3.3V or 5V and in the same board, you can reasonably >ignore the rise and fall ramps, since they are so sharp. > >Guille > >--- In lpc2000@yahoogroups.com, "diwilru" <ddiky@a...> wrote: > > >>Fellows, >> >>In my application the best I can get is 115384 Baud for uart0 whereas >> >> >data source has > > >>speed of 115200 exactly. The error is about 0.16%. The question is - >> >> >will lpc (2148) > > >>handle it? >> >>Thanks in advance, >>Dmitry. >> >> >> > > > > > > > > >Yahoo! Groups Links > > > > > > > > > >
Message
Re: [lpc2000] Re: UART clock tolerance question.
2005-12-15 by Karsten Weiss
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