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S32K COMBINING CAN MODULE INTO ONE

Question asked by Koorosh Hajiani on Sep 11, 2017
Latest reply on Sep 18, 2017 by Petr Stancik

Hi,

My target is S23K144, I was wondering if we could combine two CAN  controller to act as one controller using only one CAN transceiver. To that end I would think tie for example CAN0_RX and CAN1_RX together which I believe is quite safe however the CAN0_TX and CAN1_TX can't be tied together due to the issue of contention, the pin structure of this micro is not very clear to me, to be able to tie outputs such as CAN_TX ,together, they need to be configured as open drain/collector with a pull up resistor. in S32K , There is a MUX Alternative which configures the pin as CAN_TX however it is not clear to me  if it is push_pull or open drain or even the possibility to configure a pin as an open_drain. 

 

 

Any help is appreciated.

Regards,

Koorosh Hajiani

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