Bus Off recovery in TouCAN / FlexCAN: automatic?

I was trying to figure out how to recover from bus-off, and found this
erratum for the PowerPC MPC 565.

Has anyone tested this to be true on a TouCAN module?  On what chip?  We
are using an MPC565 Rev D.

Thanks in advance.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
CDR_AR_1045 Customer Information TOUCAN.CDR3IMB3_05_1

CAN: Bus Off recovery not ISO compliant

DESCRIPTION:
The Bus Off recovery is not ISO compliant on the FlexCAN and TouCAN
modules. The
ISO specification indicates that the CAN node should remain inactive
until user
intervention restarts it. The FlexCAN and TouCAN modules both include an
automatic
recovery mechanism for the Bus Off condition.

WORKAROUND:
The Bus Off condition interrupt should be enabled and an interrupt
service routine
implemented to disable the CAN. The user's software should then
determine when the
CAN should be re-activated.


Rick Corey  -  Crane Aerospace
Lynnwood   -   425-743-8469
Mobile        -   908-887-0722



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