Serial Peripheral Interface Specifications

A 25-MHz SPI bus (SPI_1) is available on the J6 connector with three slave selects and another 25-MHz SPI bus (SPI_0) with two slave selects on the J7 connector. The bus speed is 25 MHz in master mode and 16.67 MHz in slave mode. In a single-frame transfer, the SoC supports all four possible combinations for the serial clock phase and polarity. In multiple frame transfer, the Intel® Joule™ module supports only a clock phase setting of 1.

See also: SPI Serial Peripheral in the Expansion Board Design Guide, and SPI Interface in the Expansion Board Hardware Guide.


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