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Slave mode characteristics

In slave mode, the following apply:

• SPI Clock rates up to 5 MHz (5 Mb/s) are possible.
• Data is MSB first.
• It uses Frame Format Mode 0. This means CPOL= 0 (idle clock is low) and CPHA = 0 (data is sampled on the clock’s leading edge). The picture below diagrams Mode 0.
• The SPI port is setup for API mode and is equivalent to AP = 1.

The following picture shows the frame format for SPI communications.