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Original question:

AM2631: Can we execute code in external SRAM connected via GPMC

AM2631: AM2631

Huynh Nguyen
Intellectual 320 points
Part Number: AM2631
Other Parts Discussed in Thread: TMDS64DC01EVM,

Hello,

Is GPMC daughter card (SRAM, NAND or NOR) I/F is available ?

Thanks,

Huynh Nguyen

  • +1
    TI__Intellectual 2230 points

    Hi Huynh Ngugen,

    We are currently developing the daughter cards for GPMC that were mentioned earlier.
    I will reach out to our internal team and keep you informed about which daughter card is closest to being released to the market.

    Please let me know which GPMC daughter card is your priority. (for which memory/flash) 

    Thanks & regards,
    Rijohn

  • +1 in reply to Rijohn Pius
    Intellectual 320 points

    Hello,

    It looks like TI is developing or already had TMDS64DC01EVM for internal use and it is for NAND interface. What I am looking for is the daughter card that carries asynchronous SRAM or FPGA/ASIC external bus interface via GPMC. It seems like a lot of use cases in this area that require the driver for bare metal/free-RTOS and/or Linux SDK. Our target SoC is AM64xx family.

    I appreciate the notice when the daughter card is available.

    Regards,

    Huynh Nguyen

  • +1 in reply to Huynh Nguyen
    TI__Intellectual 2230 points

    Hi Huynh Nguyen,

    AM64 team will get back to you on this.

    Regards,
    Rijohn

  • 0 in reply to Rijohn Pius
    TI__Guru**** 171484 points

    Hi All, 

    Thank you for the query.

    Q1, I am trying to understand the query. Are you checking if we have a GPMC daughter card with SRAM?

    if yes, we do not have GPMC daughter card with Asynchronous RAM or FPGA interface. 

    Huynh Nguyen, As i understand below is the suggestion for the team from your side.

    What I am looking for is the daughter card that carries asynchronous SRAM or FPGA/ASIC external bus interface via GPMC. It seems like a lot of use cases in this area that require the driver for bare metal/free-RTOS and/or Linux SDK. Our target SoC is AM64xx family.

    Noted. I will provide the feedback to the team internally.

    Regards,

    Sreenivasa

  • 0 in reply to Rijohn Pius
    Intellectual 320 points

    Ok, when will your team have the GPMC-SRAM I/F daughter card available for AM2631 ?We also use this SoC too.

  • 0 in reply to Huynh Nguyen
    TI__Guru**** 171484 points

    Hello Huynh Nguyen,

    Thank you.

    For the AM64x we currently do not have these daughter card design in the roadmap. I will confirm the same with the EVM team and update the thread in case i have some additional inputs. 

    If there is any support required for you to design a custom daughter card in terms of technical clarification or review, we can provide the required support.

    I will reassign the thread to the AM2631 team to comment further.

    Regards,

    Sreenivasa

  • +1 in reply to Huynh Nguyen
    TI__Intellectual 2230 points

    Hi Huynh Nguyen,

    For AM263 we currently don't have GPMC-SRAM daughter card in design Roadmap.
    Instead, we are under development of GPMC-PSRAM daughter card.
    Regarding other daughter cards development, we have to discuss with team after Thanksgiving Holidays.

    I would like to know if it is acceptable for Boeing to use PSRAM instead of SRAM?

    Thanks & Regards,
    Rijohn

  • +1 in reply to Rijohn Pius
    TI__Guru**** 171484 points

    Hello Huynh Nguyen,

    Please be aware that the daughter card that Rijohn mentioned above may not be compatible with the AM64x EVM that has the below interface connection.

    Regards,

    Sreenivasa

  • +1 in reply to Rijohn Pius
    Intellectual 320 points

    hello Rijohn,

    Thanks and could you show the interface connector/headers for GPMC-PSRAM?

    V/r,

    Huynh

  • +1 in reply to Kallikuppa Sreenivasa
    Intellectual 320 points

    Hi Sreenivasa,

    I understand and while I am inquiry about AM263x GPMC interface, I already knew that AM64xx group also made

    TMDS64DC02EVM, GPMC-NAND card for internal use. I also had the schematic diagram for this card.

    Hopefully GPMC I/F to the other memory devices will also develop soon.

    I will evaluate either one for my driver's development.

    V/r,

    Huynh

  • +1 in reply to Huynh Nguyen
    TI__Guru**** 171484 points

    Hello Huynh Nguyen,

    Thank you for the note,

    Huynh Nguyen said:

    I understand and while I am inquiry about AM263x GPMC interface, I already knew that AM64xx group also made

    TMDS64DC02EVM, GPMC-NAND card for internal use. I also had the schematic diagram for this card.

    Glad to hear that you are familiar with the add-on card for the AM64x.

    Regards,

    Sreenivasa

  • +1 in reply to Rijohn Pius
    Intellectual 320 points

    Hello Rijohn,

    Could you give an estimate when this GPMC-PSRAM card will be available for LP-AM263x? I already got the I/F information from launchpad EVM from J1-J8(exceptJ3)

    for 8-bit data .

    V/r,

    Huynh

  • +1 in reply to Huynh Nguyen
    TI__Intellectual 2230 points

    Hi Huynh,

    GPMC-PSRAM daughter card is developed for CC-AM263x only and not for LP-AM263x as per our design roadmap.
    It is expected to be released by March 2024.

    Regards,
    Rijohn

  • 0 in reply to Huynh Nguyen
    TI__Intellectual 2230 points

    Hi Huynh,

    Unfortunately, we are unable to share the schematics as the product is still in the development phase.
    However, I can tell you that the GPMC-PSRAM interface connector was developed following the interface instructions in AM263x-Technical Reference Manual.


    For more details on interface for GPMC-PSRAM, please refer to Table 13-197 Supported Memory Interface and Figure 13-126 in the AM263-TRM.

    Regards,
    Rijohn