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Usage of DMM and RTP portson TMS570LS31x HDK

Lev Weihenstephan
Prodigy 105 points

Hello,

 

There are unpopulated DMM and RTP ports on TMS570LS31x HDK. I guess these are reserved for a specific debugging application, and I would like to know how it can be done. I guess DMM and RTP ports are something like JTAG ports so I looked up the emulators section in Tools & Software for Hercules TMS570 MCUs to find out what emulatrs can be hooked up to these ports. There are so many different types of emulators, I sort of gave up on finding more. Does debugging through DMM and RTP provide what something cannot be done with emulators hooked up through JTAG or MIPI? Where can I find debugging demo using DMM and RTP ports?

Sincerely,

Lev

  • 0
    TI__Guru**** 196776 points
    Hi Lev,

    The DMM stands for Data Modification Module, and RTP means RAM Trace Port (please refer to TMS570LS31x Datasheet). DMM and RTP are used to trace data write/read to internal RAM, or to write/read data directly to/from the RAM. The HDK has footprints for DMM and RTP, but the connectors are not populated. RTP connector contains same JTAG signals as used on 20-pin ARM JTAG header and 60-pin MIPI header. Please use 20-pin ARM JTAG header for your emulator. You can use the built-in XDS100V2 through the mini USB port too.

    Regards,
    QJ
  • 0 in reply to QJ Wang
    Prodigy 105 points
    Dear QJ,

    Thank you for your prompt response. I guess my earlier questions didn't seem to be clear. I understand the purpose of DMM and RTP as explained in the TRM and datasheet.

    But I am still curious about the purpose of the depopulated DMM and RTP footprints. I think these footprints are reserved for external devices that performs trace data write/read to internal RAM, or to write/read data directly to/from the RAM. However, no external devices have been suggested in HDK User guide, datasheet, and TRM. So I thought the emulators section in Tools & Software for Hercules TMS570 MCUs provides any clue for finding such external devices, but still I didn't find anything.

    Regards,

    Lev
  • 0 in reply to Lev Weihenstephan
    TI__Mastermind 49120 points
    Lev,

    You are right. The RTP/DMM connectors are depopulated. You can populate these with MIPI connectors to connect to specific tools.

    Consider the following documents from iSystems as an example.

    www.isystem.com/.../IC30323_D1_13.pdf
    www.isystem.com/.../IC30324_11.pdf

    Regards,
    Sunil