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TMS320C6748 and short Ethernet Frames

wanjeri kirubi
Prodigy 160 points
Other Parts Discussed in Thread: TMS320C6748

Hello,

1.  Can the TMS320C6748 transmit an Ethernet packet smaller than 64 bytes (incl addressing) which is normally precluded by the Ethernet spec?

2.  Can the TMS320C6748 receive an Ethernet packet smaller than 64 bytes (incl addressing)?

3.  When the Ethernet transmitter pads short frames, does it update the length field to the padded length?  Or does it stay the unpadded length?

  • 0
    TI__Genius 14545 points

    wanjeri kirubi said:
    1.  Can the TMS320C6748 transmit an Ethernet packet smaller than 64 bytes (incl addressing) which is normally precluded by the Ethernet spec?

    I don't believe so since it conforms to the IEEE 802.3 spec and the transmitter waits until 64 bytes are full in the TX FIFO before it begins transmission.

     

    wanjeri kirubi said:

    2.  Can the TMS320C6748 receive an Ethernet packet smaller than 64 bytes (incl addressing)?

    3.  When the Ethernet transmitter pads short frames, does it update the length field to the padded length?  Or does it stay the unpadded length?

    Please refer to section 2.10.8 / 5.21 in the EMAC/MDIO User's Guide specifically the RXCSFEN bit.