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User1580871742356367's avatar
User1580871742356367
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5 years ago

HPS SPI MISO pin

I have a question about HPS SPI pin, MISO. It's HPS dedicated pin once configured. Was it able to MUX it with a HPS GPIO pin internally? Which means either one of them can go to HPS SPI controller...
User1580871742356367's avatar
User1580871742356367
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Does the SPI controller support 3-wire SPI?

  • User1580871742356367's avatar
    User1580871742356367
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    Any updates? Thanks.

    • EBERLAZARE_I_Intel's avatar
      EBERLAZARE_I_Intel
      Icon for Regular Contributor rankRegular Contributor
      5 years ago

      Hi,

      There are two MISO signal pins available for the SPI masters and SPI slaves. Theses pins are routed and available to the HPS I/O, yes it can go to the SPI controller.

      I recommend that you read our Arria 10 SoC HPS TRM SPI Controller section [page 3925], for more detailed information on the usage and interfaces of the SPI controller:

      https://www.intel.com/content/www/us/en/programmable/documentation/sfo1410070178831.html

      • User1580871742356367's avatar
        User1580871742356367
        Icon for Occasional Contributor rankOccasional Contributor
        5 years ago

        My question was not about general SPI and pins available from the HPS.

        I like to know if it's possible to implement a 2:1 MUX that its inputs are connected to one of MISO pin and a HPS GPIO pin and the MUX output goes to a MISO port (not pin) of the HPS instant (or Soc subsystem).