The xSPI Controller IP is an SPI interface that supports different types of SPI protocols: standard, dual, quad, and expanded SPI (xSPI). Standard SPI is the legacy four-wire interface with separate data lines for input and output. Dual SPI (DSPI) is an extension of standard SPI using two data lines. Quad SPI (QSPI) is another extension of standard SPI designed to provide a higher data transfer rate using four data lines. xSPI is an advanced extension of standard SPI, based on the JEDEC JESD251 specification, that provides higher data throughput and improved performance while maintaining backward compatibility with standard SPI devices. xSPI uses eight data lines and is capable of double transfer rate (DTR).
CrossLink™-NX, Certus™ NX, CertusPro™-NX, MachXO5™-NX, Avant™, Certus™-N2, Mach™-N2