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TMS320C667x Gigabit Ethernet with IEEE1588 support

markus desgronte
Prodigy 150 points

Hello,

 

we are planning to use the same ethernet transceiver chip as used on the TI Shannon C6678 development board which is a Marvell 88E1111. I would like to know if this configuration fullfill the IEEE1588 ? I could see that the C667x DSP is 1588 compliant, but I cannot find anything on the Marvell side.

 

Thx

 

 

  • 0
    TI__Mastermind 42545 points

    The internal Ethernet switch in the C6678 has a module that supports a limited implementation of IEEE1588.  Because the module resides in the Ethernet switch we do not require a PHY which supports IEEE1588 so the Marvell 88E1111 is sufficient for our purposes.  Although there are other PHYs that support the protocol I don't think you need one in this instance. 

  • 0 in reply to Bill Taboada
    Prodigy 150 points

    Thx Bill for yor quick respond.

    I think it is missing one key feature that I could not find.   That is the ability to generate a hardware event ( set one of the DSPs GPIOs) on a timer match. I did not thoroughly  read it, but it appears to miss the feature.   Read section 2.3.5.2 and the events that can be generated.   I even looked for a timestamp match to generate an interrupt.   This would work, but would introduce latency into the trigger.   I did not see that either.

     

    Thx,

     

    Markus