Re: CANBus Baud Rates
Vic <simranranee-/[email protected]>
| Newsgroups | gmane.comp.hardware.microcontrollers.tini |
|---|---|
| Message-ID | <[email protected]> |
Bryan Does changing the crystal affect the clock, performance or other parts of TINI's operation? Instead of 14Mhz could I change to 18Mhz. Why was 18.432Mhz chosen in the first place, if its known to cause CAN speed issues. Is there a specific subsystem that requires such frequency for proper operation? Regds Jameel --- Bryan Armstrong <bryan.armstrong-6tN4nzCoH/[email protected]> wrote: > Vic wrote: > > I would like to find out if anyone had managed to > get > > the TINI400's CAN interface to a high baud rate > like > > 750k or 1Mbps? > > > > The API docs show some BRP,TSEG1/2 values for old > > TINI390 and its respective baud rate, is there a > > similar list or a baud rate calculator for > Tini400? > > You will have to change the crystal to get 1Mbit/s > with less than 0.5% > error as required by Bosch. 14MHz will work. > > The bit rate calculation is pretty much the same for > any CAN controller. > Define your tqu, TSEG1 and TSEG2 and you are done. > I have not used > any baud rate calculation software, but you may be > able to find one on > the Internet. For my use, I just iterated through > all the combinations > of bit parameters and picked the bit rate and sample > position I wanted. > > -Bryan > > -- > -- > Bryan Armstrong > bryan.armstrong-6tN4nzCoH/[email protected] > > __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools _______________________________________________ TINI mailing list TINI-6tN4nzCoH/[email protected] To UNSUBSCRIBE, edit your profile, or see list archives: http://lists.dalsemi.com/mailman/listinfo/tini