Reply To: Free PINS on the Cyclone iv in OSSC V1.5?

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May 2, 2019 at 5:35 PM #26115
renegadeandy
Participant

    Hi again

    So the SD card functionality uses SPI — which uses 4 signals:

    SCLK
    MOSI
    MISO
    SS

    Is that correct? Can you help me locate those pin numbers?

    I see in the Pin editor:

    SD_CLK
    SD_CMD
    SD_DAT[3]
    SD_DAT[2]
    SD_DAT[1]
    SD_DAT[0]

    — how do those tie up the SPI spec?