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yangz's avatar
yangz
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23 days ago

EMIF Pin Assignment for Agilex 7 FPGA I-Series DevKit (DK-DEV-AGI027R1BES)

Hi Altera Support Team,

We are trying to install two Micron 32GB 2Rx4 RDIMMs on the Agilex 7 I-Series FPGA Development Kit, PCB Rev. A (DK-DEV-AGI027R1BES), and would like to confirm the correct EMIF pin assignment for this board.

We have already enabled these two DIMMs on a DK-DEV-AGI027RBES board. However, we noticed that the golden pin assignment provided in the installer package appears to be the same for both FPGA boards. Since these two boards use different power solutions and different pin assignments, we believe the DK-DEV-AGI027R1BES should require a different EMIF pin assignment.

At the moment, we have not been able to find the correct pin assignment for the DK-DEV-AGI027R1BES board. Could you please provide this information, or point us to the appropriate documentation?

Best regards,
Yang

9 Replies

    • yangz's avatar
      yangz
      Icon for New Contributor rankNew Contributor
      15 days ago

      Hi Yoichi,

      Thank you for your response. I noticed that the example design includes only J1 (the DIMM A connector), but not J2 (the DIMM B connector). Is there any documentation available for the pin assignment of J2 as well?

      I also noticed that the pin assignments for the AGI 027 (ES) and AGI 027 (ES2) development kits appear to be the same for the J1 far slot, Channel 0, and Channel 1. Is this expected?

      • yoichiK_altera's avatar
        yoichiK_altera
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        9 days ago

        Coping from devkit user guide. The slot support only 2-DPC(dual per channel) thus J1 and J2 signals are shared across dual dimms beside CS/ODT/CKE.

        The two 288-pin DIMM sockets interface to bank 3C, 3D for Dual DIMM memory.
        These sockets accept DDR4 module. These DIMM support dual rank at frequency
        1333 MHZ 16 GB per channel, and single rank at 1333 MHZ 8 GB per channel.
        — Some board re-work is required for using DIMM sockets in 2-DPC configuration
        or different kinds of DDR4 modules. For more details of the resistor
        connections required to be present for the type of configuration used, refer to
        board schematic table.

        Do you want to enable 2-DPC configuration ? or just 1-DPC which can be generated from example design.