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Query regarding interfacing of TMDSEVM6670L EVM with HSCRK

Dhanmeet Singh
Prodigy 120 points
Other Parts Discussed in Thread: TCI6636K2H, RFSDK, SYSBIOS

Hi,

We have purchased TMDSEVM6670L EVM and intend to interface it with HSCRK (DR-BOC + AFE7500 kit) over CPRI and SPI pins (over TEST_PH1 connector at EVM). This interfacing seems possible in principle, since a similar architecture has been proposed in TI High-Performance Small Cell Development Platform document (http://www.ti.com/lit/ml/sprt693/sprt693.pdf) using TCI6636K2H SoC. Can TI engineers please confirm if this kind of interfacing is feasible before we purchase HSCRK?

Many thanks for the response in advance.

  • 0
    TI__Guru* 81335 points

    Hi Dhanmeet,

    Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages (for processor issues). Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics (e2e.ti.com).

    We will get back to you on the above query shortly. Thank you for your patience.

  • 0 in reply to Raja
    TI__Genius 17200 points
    Hi Dhanmeet,

    We really do not have any support model for this in hardware or software combination.

    The hardware itself is partially there. The CPRI SERDES lanes are brought out to the same lanes on the AM1 AMC card-edge interface and the I/O expansion header TEST_PH1 contains a pinout of the TCI6670 SPI port that can be used for communicating with the FPGA and GC5330 devices on the HSCRK adapter board and other GPIO. However, you would have to create a custom cable that brings out the TCI6670 pins on the TEST_PH1 connector to the HSCRK adapter board control header. Following the schematics and BOM for both platforms will give you the information you need.

    The more difficult effort however will be porting RFSDK to the TCI6670 device/EVM. RFSDK development assumes the TCI6638K2K and TCI6630K2L supported MCSDK for CSL libraries, Linux kernel and Linux libraries and all of the underlying devices specific features and EVM features and the hardware and features of the associated AFE7600 data-converter EVM or DRBOC adapter board. The recommendation from the HSCRK/RFSDK team is to utilize the existing HSCRK kit with the TCI6638K2K EVM as-is or the TCI6630K2L small-cell kit and work back from that to port the solution to TCI6670 if TCI6670 usage is still desired.

    I would recommend utilizing the TCI6630K2L or TCI6638K2K supported kits. www.ti.com/.../sprt700.pdf

    Thank you,
    -Randy
  • 0 in reply to Randy Rosales
    Prodigy 120 points

    Hi Randy,

    Thank you so much for your response.

    Few clarifications on the information:

    1. For communicating with FPGA on HSCRK adapter board, would programming of FPGA be required, or pre-programmed version of FPGA is already available with the kit?

    2. If we purchase an HSCRK adapter board, would RFSDK and its source code be available with this adapter board, or is there a separate licensing cost for RFSDK SW and its source code.

    Regards,

    Dhanmeet

  • 0 in reply to Dhanmeet Singh
    Prodigy 120 points
    Hi Randy,

    Further query on your recommendation:
    "I would recommend utilizing the TCI6630K2L or TCI6638K2K supported kits. www.ti.com/.../sprt700.pdf"

    Can you please provide purchase option for such devices, since the document sprt700.pdf does not provide this information.

    Regards,
    Dhanmeet
  • 0 in reply to Dhanmeet Singh
    TI__Guru* 81335 points
    Hi Dhanmeet,
    Please refer below links for K2L and K2K EVM purchase options,
    K2L - www.einfochips.com/.../k2l-evm.html
    K2K - www2.advantech.com/.../EVMK2HX.aspx
    Thank you.
  • 0 in reply to Raja
    Prodigy 120 points

    Hi Raja,

    Thanks for the information.

    Since both of these boards are baseband only boards (without RF card), our understanding of the recommendation is as follows:

    Step 1: Purchase K2K/K2L based baseband EVM, purchase HSCRK kit and interface them using RFSDK.

    Step 2: Modify source code of RFSDK in order for HSCRK to work with 6670 EVM.

    Can you please confirm if our understanding is correct?

    Thanks,

    Dhanmeet

  • 0 in reply to Dhanmeet Singh
    TI__Mastermind 43660 points
    Hello Dhanmeet,

    Yes, your understanding is correct. You have to purchase both K2K/K2L based baseband EVM and HSCRK kit and interface them using RFSDK. I would suggest you to follow the Randy guidelines in order for HSCRK to work with 6670 EVM.

    Regards,
    Senthil
  • 0 in reply to Senthilkumar Srinivasan
    Prodigy 120 points

    Hi Senthil,

    Thanks for the clarification.

    Just to add, we are waiting for the response to our queries posted above:

    ####

    1. For communicating with FPGA on HSCRK adapter board, would programming of FPGA be required, or pre-programmed version of FPGA is already available with the kit?

    2. If we purchase an HSCRK adapter board, would RFSDK and its source code be available with this adapter board, or is there a separate licensing cost for RFSDK SW and its source code.

    ####

    Thanks,

    Dhanmeet

  • 0 in reply to Dhanmeet Singh
    TI__Genius 17200 points

    Hi Dhanmeet, 

    Answers to above questions: 

    1. If you keep all of the same SPI communication rates and SERDES data rates and the supported RFSDK software revision, then no additional programming of the FPGA should be necessary. If you want to modify any feature from what the RFSDK software supports by default, then you will have to make the necessary changes. Of course, with the K2L based kit, there is no RFpath or baseband data path FPGA to program. The FPGA on the K2L EVM deals only with MUX'ing and routing of SPI control and discrete LVCMOS control pins. 

    2.  Let me talk to our sales team and get back with you. My tentative answer is that all of the RFSDK software and hardware are part of the single kit. So you should get everything you need. I'll check and see what comes in the kit and where to find more details for you. 

    Thank you, 

    -Randy

  • 0 in reply to Randy Rosales
    TI__Genius 17200 points
    Hi Dhanmeet,

    Can you please e-mail me at rosales.r@ti.com to continue this discussion?

    Thank you,
    -Randy
  • 0 in reply to Randy Rosales
    Prodigy 120 points

    Hi Randy,

    Thanks for the clarification.

    As you indicated, I shall drop an e-mail today regarding RFSDK licensing.

    Regards,

    Dhanmeet

  • 0 in reply to Randy Rosales
    TI__Guru*** 138329 points

    Hi Dhanmeet,

    Please note that the RFSDK code is a Linux application that would not run on 6670 device.

    Thanks

    cesar

  • 0 in reply to Cesar
    Prodigy 120 points

    Hi Cesar,

    Thanks for the information. So, that means RFSDK shall have to be ported to SYSBIOS as well apart from porting it to DSP processor.

    Actually, we have already purchased 6670 EVM and are now ready for RF integration. In case we go for Lamarr + RF integration, we shall have to purchase a Lamarr EVM as well.

    Anyways, thanks for this clarification about RFSDK. We shall keep this consideration in mind while deciding whether to go for 6670 + RF or Lamarr + RF design.

    Regards,

    Dhanmeet