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Altera_Forum's avatar
Altera_Forum
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8 years ago

DDR3 memory controller Termination calibration error.

Hi,

I am using DDR3 memory controller generated with UniPhy IP core, for Cyclone V device.

I have selected 'No sharing' mode for OCT sharing option. Also connected oct_rzqin port to the input pin.

But tool issues the following error when I run Analysis & Synthesis.

Error (15700): Termination calibration block atom "ddr3_mem_controller:DDR3_CONTROLLER_BOT|ddr3_mem_controller_0002:ddr3_mem_controller_inst|altera_mem_if_oct_cyclonev:oct0|sd1a_0" uses RZQIN port, which must be connected to a dedicated I/O atom with no other fanout

From the error message I undestood that oct_rzqin port should be connected to the dedicated I/O pin. But I have added pin lock constraint for these pin in my qsf file. I have no idea why still tool issues this error. Looking for the help from here. Thanks in advance.

8 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    I'm not sure what you mean by a "pin lock constraint" (a pin assignment in the Pin Planner?). In any case, if you make a pin assignment for the OCT, it must be to one of the dedicated RZQIN pins of your particular target device. Check your device's handbook to see which dedicated pins are available for this function or do a pin search in the Pin Planner.

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    Thanks sstrell.. I had assigned wrong pin to RZQIN port. It was solved when I assigned the dedicated pin.

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    I could solve the above error by assigning the dedicated pin for RZQIN port. But I am facing following errors during fitter.

    Error (174052): I/O "io_bot_mem_dq[0]" has dynamic termination control connected, but does not use parallel termination

    .

    .

    Error (174052): I/O "io_bot_mem_dq[15]" has dynamic termination control connected, but does not use parallel termination

    Error (174052): I/O "io_bot_mem_dqs[0]" has dynamic termination control connected, but does not use parallel termination

    Error (174052): I/O "io_bot_mem_dqs[1]" has dynamic termination control connected, but does not use parallel termination

    Error (174052): I/O "io_bot_mem_dqs_n[0]" has dynamic termination control connected, but does not use parallel termination

    Error (174052): I/O "io_bot_mem_dqs_n[1]" has dynamic termination control connected, but does not use parallel termination

    It seems like fitter is giving this error for all the Inout ports of DDR3 memory interface. What does this error mean? What is causing this error to appear?
    • srinivasan's avatar
      srinivasan
      Icon for Occasional Contributor rankOccasional Contributor
      4 years ago
      Hi,
      I am also getting the same error...can you please me how you rectify the error..
  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    You need to add a parallel termination assignment on the I/O pins to work along with the OCT.

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    --- Quote Start ---

    You need to add a parallel termination assignment on the I/O pins to work along with the OCT.

    --- Quote End ---

    How to add parallel termination assignment on I/O pins?
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    Perhaps you need to run the pin assignment ticker script.

    go to tools, tcl_scripts... select <>_pin_assignments.tcl and click run.

    (This message was posted on behalf of Intel Corporation)