TMS320F28P559SG-Q1: Do we have recommend clock frequency of

Shuqing Zhou

Tool/software:

Hi team,

For MCAN module, it needs two clock, but I don't find these two clock frequency requirement in datasheet, for example, in other device, it will recommend MCAN_FCLK work in 20MHz, 40MHz and 80MHz, do we have any recommend configuration about it?

What's more, any clock parameter requirement such as the requirement for I2C module?

over 1 year ago

0 Matt Kukucka over 1 year ago

TI__Mastermind 20380 points

Hi,

I believe the only clocking requirements for the MCAN IP is that MCAN_FCLK has to be less than or equal to the MCAN_ICLK. As recommended by the CiA 601-2 CAN controller interface specification, clock frequencies of 20, 40, or 80 MHz should be used.

Best,

Matt

0 Shuqing Zhou over 1 year ago in reply to Matt Kukucka

TI__Expert 4185 points

Hi Matt,

do you have the CiA 601-2 doc?

0 Matt Kukucka over 1 year ago in reply to Shuqing Zhou

TI__Mastermind 20380 points

Hi Shuqing,

I do not have access (it has to be purchased), but I referred to this document published by CiA: https://www.can-cia.org/fileadmin/cia/documents/publications/cnlm/march_2018/18-1_p28_recommendation_for_the_canfd_bit-timing_holger_zeltwanger_cia.pdf

Best,

Matt

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TMS320F28P559SG-Q1: Do we have recommend clock frequency of