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Exact allocation between propagation segment and phase segment 1

BBute.1
Associate II

Hello,

 

I am considering to use several STM32 microcontrollers to develop CANFD devices. I just saw CANFD Bosch specification v1.0, and more particularly scope 8 which defines the following requirements:

BBute1_0-1750420330453.png

Unfortunately, on all STM32 I have been confronted so far, you cannot specify exactly PROP seg and Phase seg 1 indivually but just the overall (Prop_seg+Phase_seg1). Which is fine to determine the sample point but I am not able to check if my bit timings are meeting the requirements above as I cannot discriminate prop seg length from phase 1 length.

1. Is the dispatch between propseg and phase seg 1 constant over all devices ?

2. Is the propagation segment always fixed to 1Tq for example ?

 

Any insight regarding this would be appreciated,

Best regards

 

1 ACCEPTED SOLUTION

Accepted Solutions
mƎALLEm
ST Employee

Hello,

Hello for FDCAN timing, I propose you to refer to this Youtube video: FDCAN Normal Operating Mode

Kvaser calculator can also help you for CAN-FD bit timing.

Hope that helps.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

View solution in original post

1 REPLY 1
mƎALLEm
ST Employee

Hello,

Hello for FDCAN timing, I propose you to refer to this Youtube video: FDCAN Normal Operating Mode

Kvaser calculator can also help you for CAN-FD bit timing.

Hope that helps.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.