Problem with Bit stuffing

Hello 

I have a CAN-Modul with an 8 Bit CAN controller from Infineon
(SAF-C515C-8EM).
The Busload is about 30%.
Sometimes the controller has problems to set the Stuffbit on the right 
possition.
For example:
He sends 6 recessive Bits and than a dominant Bit.
But after 5 equal Bits must follow an other Bit.

I want to know if some one has known this problem?

Thanks 
Alexander

Alexander wrote:

> I have a CAN-Modul with an 8 Bit CAN controller from Infineon
> (SAF-C515C-8EM).
> The Busload is about 30%.
> Sometimes the controller has problems to set the Stuffbit on the right 
> possition.
> For example:
> He sends 6 recessive Bits and than a dominant Bit.
> But after 5 equal Bits must follow an other Bit.

I consider such a fault extremely unlikely to have been caused by the 
CAN node.  Things like that don't go unnoticed.

A mismatch of clock frequencies or bit timings between the C515 and 
whichever other device you used to count those bits is considerably more 
likely than an utter failure of a CAN controller to adhere to the CAN 
spec.  As would be some kind of out-of-specs operation of the thing (too 
fast, constraint violation in CAN timing configuration, wrong voltage, 
whatever, ...)