SiFive /FE310 /QSPI0 /fmt

Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text

Interpret as fmt

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (Single)protocol 0 (Big)endian 0 (Rx)direction 0length

protocol=Single, endian=Big, direction=Rx

Description

Frame Format Register

Fields

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

Links

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