Start-up

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The normal bring up process:

  • Establish the QSPI_REF_CLK (PMC clock controller)
  • Release the reset
  • Set the baud-rate divisor (QSPI divider)
  • Configure the controller
  • Enable interrupts
  • Set PIO or DMA mode
  • Enable the controller
  • Issue controller command
  • PIO operating mode
    • Read/write data via TX/RXFIFOs
    • Issue controller commands
    • Monitor FIFOs in interrupt handler
  • DMA operating mode
    • Configure and launch the DMA transfer
      • Program DMA controller
      • Program interrupts
      • Send SPI command to flash device using controller commands sent to the command FIFO
      • Initiate DMA transfer
    • Wait for the DMA done interrupt [DONE] to be generated