shakti/m_class/SPI.mdwn

   1 # SPI
   2
   3 see also [[QSPI]]
   4
   5 * <http://bugs.libre-riscv.org/show_bug.cgi?id=6>
   6 * Optional 4-wire SPI NAND/NOR for boot (XIP - Execute In-place - recommended).
   7 * <https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/>
   8   includes GPIO, SPI, UART, JTAG, I2C, PinCtrl, UART and PWM.  Also included
   9   is a Watchdog Timer and others.
  10 * APB to SPI <https://opencores.org/project,apb2spi>
  11 * ASIC-proven <https://opencores.org/project,spi_master_slave>
  12 * Wishbone-compliant <https://opencores.org/project,simple_spi>
  13 * Raptor Engineering litespi, improved <
  14 https://gitlab.raptorengineering.com/kestrel-collaboration/kestrel-litex/litespi>
  15 * Also Shakti E-Class peripheral set in BSV