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TMDSEVM6657LS EVM breakout card

Good day experts,

We have the TMDSEVM6657LS EVM (from eInfochips) and I would like to connect one of its McBSP's externally to one of our other products. 

I can't seem to find a manufacturer for a breakout card for the TEST_PH1 connector on the EVM.

Can you guys please recommend a third-party breakout  card for this EVM?

  • Hi,

    From my understanding,we do have break-out card for AMC1 however that is not validated against C6657 EVM.

    Please refer below link for more information.

    http://processors.wiki.ti.com/index.php/CI_Dual_EVM_Break_Out_Card

    I am checking with team get more information, in the meantime we would recommend you to contact board manufacturer for breakout card on TEST_PH1. 

    Thank you.

  • Hi Rajasekaran,

    Thank you for the info. I am familiar with the AMC1 break-out card, but its a bit expensive ($499) just to gain access to the McBSP pins and as you say it is not validated against our particular EVM.

    I have already contacted eInfochips, but I am still awaiting their response.

    Is there not perhaps a generic type of breakout board for this connector? Even if it only brings out the pins as standard header pins, it would already be very helpful.

  • Hi ReinierC,

    The debug header was provided to allow customers to develop custom daughter-cards. We don't have a break-out card for that connector and I'm not aware of any third party generic break-out card. Note that the FPGA on the EVM is currently configured to drive the McBSP signals based on the inputs at the AMC connector. If you are going to use the debug header to connect a McBSP interface, you will have to disable the drivers in the FPGA.

    Regards, Bill

  • Hi Bill,

    Thank you for your reply.

    Would you therefore recon that the only viable alternative is to develop a simple PCB with the associated male connector?

    How can I disable the drivers in the FPGA? Is this simply a specific dip-switch configuration or is it more complicated than that? 

  • Hi ReinierC,

    Developing a simple PCB is your best solution, both from a connectivity and a signal integrity perspective. The McBSP drivers in the FPGA are disabled using an FPGA register access. More details can be found in the EVM technical reference manual in section 2.14. Registers within the FPGA are accessed using the SPI interface from the C6657. Addition details can be found in the EVM technical reference manual section 5.5.1.

    Regards, Bill

  • Hi Bill,

    Thank you for the additional information. I am quite surprised that there is no third party break-out card available for this EVM, surely I cannot be the first developer that ran into this problem! Nevertheless, I think I'll manage to gain access to these pins with some sort of a hack.

  • Hi,

    Please help us to close this thread. Thank you.