Lpc2000

r_goncalves2000 wrote:

> Hello guys and thank you very much for your fast answers.
>
> I'm thinking in doing this.
> Use a 15MHz cristal.
> Use PLL to set cclk to 60MHz.
> Set VPDIV to define pclk to 60Mhz.
>
> With this settings I have 0% error in defining the CAN baud rate
> and a maximum of 1.72% error in RS-232 baud rate at 115.200.
> At 19.200 I get 0.16% error. In this group I found that RS323
> error should be less than 3% so I think I'm OK.
>
> I think it's better to have no error in CAN than in RS-232.
> In CAN if the cable is to long I get errors due to the baud
> rate setting and errors do to the size of the cable.
>
> Am I right? Any comments?


If you are withing 1% for the CAN bit speed you will be alright. For 
cable length adjust the sample point instead. Use 87.5% for instance to 
be able to use the length specified for CANOpen

Cheers
/Ake

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Ake Hedman (YAP - Yet Another Programmer)
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