Serial Peripheral Interface - Master/Slave with FIFO
The DSPI_FIFO data is simultaneously transmitted and received. What's more important, this is a technology independent design, that can be easily implemented in a variety of process technologies. The DSPI_FIFO system is flexible enough, to interface directly with numerous standard product peripherals, from several manufacturers. The system can be configured as a master or as a slave device, with data rates as high as CLK/4. The clock control logic allows a selection of clock polarity and a choice of two fundamentally different clocking protocols, to accommodate most available, synchronous serial peripheral devices. When the SPI is configured as a master, the software selects one of eight different bit rates for the serial clock.
The DSPI_FIFO automatically drives selected by the SSCR (Slave Select Control Register) slave outputs (SS7O - SS0O) and addresses the SPI slave device to exchange serially shifted data. Error-detection logic is included to support interprocessor communications. A write collision detector indicates, when an attempt is made to write data to the serial shift register, while a transfer is in progress. A multiple-master mode-fault detector automatically disables DSPI output drivers, if more than one SPI device simultaneously attempts to become a bus master.
The DSPI_FIFO supports two DMA modes: single transfer and multi-transfer. These modes allow the DSPI_FIFO to interface to higher performance DMA units, which can interleave their transfers between CPU cycles or execute multiple byte transfers.
Our solution is fully customizable, which means it is delivered in the exact configuration to meet users? requirements. There is no need to pay extra for not used features and wasted silicon. It includes fully automated testbench with complete set of tests allowing easy package validation at each stage of SoC design flow
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