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TMS320F28388D: How to enable IP Fragmentation on CM-core

Eric Best
Expert 7725 points

Part Number: TMS320F28388D
Other Parts Discussed in Thread: C2000WARE

Per the TRM, the ethernet module supports IP fragmentation in HW.  In chapter 43.5.6.8, the TRM states to set bits 13 and 14 in DMA_CH0_TX_CONTROL to enable IP fragmentation.  However, these bits are listed as reserved and read-only. 

Is this feature available?  Assume this is documentation issue?  Can IP fragmentation be enabled and work with DriverLib?

Thanks,

Eric

  • 0
    TI__Expert 5551 points

    Hi Eric,

    Yes. TCP Segmentation can be done in the Ethernet module. It can also be done with Driverlib

    There is an example in C2000Ware:

    <c2kware>\driverlib\f2838x\examples\cm\ethernet\ethernet_ex7_tranport_segmentation_offload which demonstrates how it can be done with driverlib.

    Eric Best said:
    Assume this is documentation issue?

    Yes. There is some discrepancy. I shall look into that. 

    Regards,

    Sudharsanan

     

  • 0 in reply to Sudharsanan
    TI__Expert 7725 points

    Sudharsanan,

    Thanks for the quick reply.  Please post any necessary doc changes in this thread so they are available before the next TRM update.  Will assume the DriverLib example has correct register usage.

    -Eric