What is the difference between pins FDCAN1_TX and FDCAN1_TXFD_MODE ?

[Mr_M_from_G]

Hello ,

in STM32 H742 data sheet I find CAN pind with or without the suffix FD_MODE, but there is no explanation on it. What does that mean? CAN peripheral has only one output for Rx and Tx each. Can't I use those without FD_MODE when using CANFD but only for CAN2.0? How does the pin know which mode is used?

Thank you for some details

Martin

[Mr_M_from_G]

Any ideas?

I need this information for a schematics, which pins should I use?

Thanks for any help

Martin

[Mr_M_from_G · Accepted solution]

It seems I found something for another STM32 H7:

https://community.st.com/s/question/0D50X0000C5Uo6iSQC/rxfdmode-and-txfdmode-pins-what-are-they-for

[SofLit]

Dear @Mr_M_from_G​ ,

Indeed, only Rx and Tx are used for FDCAN communication..

All FDCANx_TXFD_MODE & FDCANx_RXFD_MODE occurrences will be removed from datasheets.