protocol=Single, endian=Big, direction=Rx
Frame Format Register
protocol | 0 (Single): DQ0 (MOSI), DQ1 (MISO) 1 (Dual): DQ0, DQ1 2 (Quad): DQ0, DQ1, DQ2, DQ3 |
endian | 0 (Big): Transmit MSB first. 1 (Little): Transmit LSB first. |
direction | 0 (Rx): For dual and quad protocols, the DQ pins are tri-stated. For the single protocol, the DQ0 pin is driven with the transmit data as normal. 1 (Tx): The receive FIFO is not populated. |
length |