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Karl Yamashita
Principal
October 17, 2025
Question

Nominal SJW needs to be inside the FDCAN Bit timing parameter tree

  • October 17, 2025
  • 1 reply
  • 217 views

Thread split from this discussion; specifically, this post.

 

My mistake. Doesn't make sense to have the nominal SJW mixed with the data bit configuration. It should be inside the Bit timing parameter tree view along with the other nominal configurations. 

1 reply

mƎALLEm
Technical Moderator
October 17, 2025

@Karl Yamashita wrote:

My mistake. Doesn't make sense to have the nominal SJW mixed with the data bit configuration. It should be inside the Bit timing parameter tree view along with the other nominal configurations. 


Totally agree and it's confusing. I've already requested months ago (internal Ticket number 152901) to reorganize the FDCAN "Parameter settings" so all the timings need to be in the same item (Bit Timings Parameters) in this order:

Nominal Prescaler,
Nominal Time Quantum
Nominal Sync Jump Width
Nominal Time Seg1
Nominal Time Seg2
Nominal Time for one bit
Nominal Baud Rate
Data Prescaler
Data Time Quantum
Data Sync Jump Width
Data Time Seg1
Data Time Seg2
Data Time for one bit
Data Baud Rate

Hope these changes will be implemented in the next release of CubeMx.

 

 

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