16.5.7.5.1 Definitions (MRL A, MRL B)

SPI x-y-z protocol:
  • Command opcode is sent on x I/O data line(s) with x in {1, 2, 4}
  • Address is sent on y I/O data line(s) with y in {1, 2, 4}
  • Data are sent or received on z I/O data lin(s) with z in {1, 2, 4}
Relevant combinations are shown in the table below:
Protocol Description
SPI 1-1-1 Legacy SPI protocol using MOSI/IO0 and MISO/IO1 lines
SPI 1-1-2 SPI Dual Output using IO0 and IO1 lines
SPI 1-2-2 SPI Dual I/O using IO0 and IO1 lines
SPI 2-2-2 SPI Dual Command using IO0 and IO1 lines
SPI 1-1-4 SPI Quad Output using IO0, IO1, IO2 and IO3 lines
SPI 1-4-4 SPI Quad I/O using IO0, IO1, IO2 and IO3 lines
SPI 4-4-4 Quad Command using IO0, IO1, IO2 and IO3 lines