BORA SOM/BORA Hardware/Peripherals/Quad-SPI

Quad-SPI is used to access multi-bit serial flash memory devices for high throughput and low pin count applications. The controller operates in one of three modes: I/O mode, linear addressing mode, and legacy SPI mode. The following table describes the interface signals:

Pin name	Conn. pin	Function	Notes
SPI0_CS0	J1.120	Chip select 0	MIO bank 0, pin 1
SPI0_CS1	J1.122	Chip select 1	MIO bank 0, pin 0
SPI0_DQ0	J1.125	1-bit: Master Output 2-bit: I/O0 4-bit: I/O0	MIO bank 0, pin 2
SPI0_DQ1	J1.123	1-bit: Master Input 2-bit: I/O1 4-bit: I/O1	MIO bank 0, pin 3
SPI0_DQ2	J1.121	1-bit: Write protect 2-bit: Write protect 4-bit: I/O0	MIO bank 0, pin 4
SPI0_DQ3	J1.119	1-bit: Hold 2-bit: Hold 4-bit: I/O3	MIO bank 0, pin 5
SPI0_SCLK	J1.129	Serial clock	MIO bank 0, pin 6