Problem in CRC check

Discussion in 'VHDL' started by sridar, Sep 12, 2007.

  1. sridar

    sridar

    Joined:
    Jun 5, 2007
    Messages:
    51
    Hai Frndz,

    I am using the 32 bit CRC check code generated by the tool from the site http://www.easics.be/webtools/crctool . Our application is to check the validity of the ethernet frame in the receiver.

    I have few doubts in the code generated by the tool.

    1. Whether it follows IEEE 802.3 Std, where the first 32 bits reversed by applying 0xffffffff to the 32 bit register which calculates next crc bits.

    2. The Ethernet polynomial is 33 bits. becoz it has 32 bit register how this 33 bits XORed with the 32 bit data.

    3.If I apply 0x00000000 as data to the code,what should be the output of next crc value.
     
    sridar, Sep 12, 2007
    #1
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