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OMAP L138 + C6748

Adam Koltys
Intellectual 560 points
Other Parts Discussed in Thread: OMAP-L138, OMAPL138

Hi,

I have a question about using omap l138 and c6748. I have Zoom™ OMAP-L138 EVM Development Kit. There are two soms one with omap and one with c6748 on it. Is it possible to run those two processors at the same time (assuming that I have a board that can have those two soms attached at the same time). So that arm could wake up dsp procesor which is in omap or the other one dsp (stand alone c6748 from the other som).

  • 0
    TI__Mastermind 24340 points

    Hi Adam,

    I'm assuming you need 2 DSPs for your end application, am I correct?

    For the OMAP-L138, the ARM running Linux can wake load a program on the DSP using DSpLink or iUniversal.

    If you want to have an additional DSP in your board, you would need to use one of the boot methods to boot it:

    http://www-s.ti.com/sc/techlit/SPRAB41

    and then communicate with the ARM using one of the peripherals,  or shared memory and a software laywer like DSPLink.

  • 0 in reply to Mariana
    TI__Mastermind 29191 points

    SW & boot aspects aside, another thing to keep in mind is that the L138 SOM and the C6748 SOM share a lot of circuitry (power supply logic, Ethernet PHY, etc.).  Therefore, putting an L138 SOM and a C6748 SOM on the same board would lead to a lot of redundancy & complexity.  If there is a need for an L138 (ARM + DSP) and C6748 (DSP) in the same board, then I would recommend a more custom, scaled-back design.

  • 0 in reply to Gus Martinez
    TI__Expert 4930 points

    Adam,

    DSPLink supports a ARM waking up the DSP in OMAPL138 (without the second C6748) in the present releases.

    We do support multi DSP scenario in certain specific configurations. But I feel you will have to port DSPLink to your system scenario.

     If you can give more details about your specific configuration , which physical connection exists between A8 and C6738, what IPC you are interested in? Or are you interested only in boot loading? Based on your specific scenario, I can give more i/ps.

    Deepali

  • 0 in reply to Deepali Uppal
    Intellectual 560 points

    Thanks for all your replies. I was asked by my employer if it is possible to do such thing and if yes how hard would it be. Arm core will be running linux and using dsplink to work with dsp core. At this moment I am just gathering information so I can't give you any details about configuration.