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masato1's avatar
masato1
Icon for New Contributor rankNew Contributor
2 years ago

Cyclone 10 GX: How to implement DDR I/O and BUFGCE equivalent in Quartus?

Hello,

I am working on a design using Cyclone 10 GX and need to implement two functionalities:

1. **Basic DDR (Double Data Rate) I/O**:
In Intel's older devices, primitives like ALTDDIO_IN, ALTDDIO_OUT, or ALTDDIO_BIDIR were available for simple DDR I/O operations. However, I noticed that these IPs are not supported in Cyclone 10 GX. Is there a recommended way or equivalent IP/primitive in Quartus for implementing basic DDR I/O on FPGA pins? My use case is to send and receive DDR data on pins, not to interface with external DDR memory.

2. **Global Clock Enable (BUFGCE equivalent)**:
In Xilinx devices, I often use the BUFGCE primitive to dynamically enable or disable global clocks. Is there an equivalent feature, primitive, or IP in Quartus for Cyclone 10 GX to achieve similar functionality?

Any guidance, examples, or documentation references would be greatly appreciated. Thank you!

Memory

5 Replies

    • masato1's avatar
      masato1
      Icon for New Contributor rankNew Contributor
      2 years ago

      Thank you for clarifying that altclkctrl can be used for global clock enable functionality similar to BUFGCE. That answers my question about clock control.

      Now, I would like to implement **IDDR (Input Double Data Rate) and ODDR (Output Double Data Rate)** functionality in Cyclone 10 GX.

      In Xilinx devices, IDDR and ODDR primitives are commonly used for DDR data transfer on I/O pins. Is there an equivalent IP core, primitive, or recommended method in Intel Quartus for implementing similar DDR functionality on Cyclone 10 GX?

      If no direct IP or primitive is available, are there examples or guidelines for manually implementing DDR I/O using Cyclone 10 GX resources?

      Thank you for your help!

  • AdzimZM_Altera's avatar
    AdzimZM_Altera
    Icon for Regular Contributor rankRegular Contributor
    12 months ago

    As we do not receive any response from you on the previous reply that we have provided, I now transition this thread to community support. Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.