An error in the value of the CRC 32 polynomial?

[brinken]

LPC55S69 has a CRC ENGINE module. The calculation of CRC32 is based on the CRC32 polynomial. This should be 0x4c11db7 (Ethernet standard). But actually it is 0xdc6d9ab7. This is error?

[jeremyzhou]

Hi Nikolay Brinken,

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Actually, I'm not very clear with your question, whether you mean the CRC engine module doesn't work as you expect to.
If yes, I was wondering if you can introduce the phenomenon in detail, as I'd like to replicate it on my site.
Looking forward to your reply.

Have a great day,
TIC

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[brinken]

Dear Jeremyzhou!

My problem was solved by reversing the bytes in the input word (rev R0, R0). That's my fault.

Best wishes, Nikolay.

>Пятница, 28 февраля 2020, 7:32 +03:00 от jeremyzhou <admin@community.nxp.com>:

> 

>NXP Community

>Re: An error in the value of the CRC 32 polynomial?

>reply from jeremyzhou in LPC Microcontrollers - View the full discussion