TMS570 Wake-up on DCAN random startup

JHough

I am putting the TMS570 into sleep mode:

*CSDISSET = 0x73; /*Clock Source Disable */
*CDDIS = 0x7f; /*Clock Domain Disable */

With the only wakeup event set as DCAN event, but im am seeing wakeup events occuring as soon as i put the core to Idle. Not CAN bus is connected so there are no frames. Also all three DCAN's have the WakeUp Pnd bit set.

Can anyone shed any light into what i may be doing wrong?

Thanks

over 12 years ago

0 QJ Wang over 12 years ago

TI__Guru**** 199386 points

Hi JHough,

I have forwarded your question to our expert so they can have look at the issues you are having.

Regards,

0 Zhaohong Zhang over 12 years ago in reply to QJ Wang

TI__Mastermind 22715 points

Do you have pull up on DCAN pins? What is that state of the pin? A low state on the pin will be considered as a wake up signal.

Thanks and regards,

Zhaohong

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TMS570 Wake-up on DCAN random startup