Transcription of ST SPI protocol
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ST SPI protocol
September 2013 Doc ID 023176 Rev 21/28TN0897 Technical noteST SPI protocolIntroductionThe document describes a standardized SPI protocol . It defines a common structure of the communication frames and defines specific addresses for product and status ID 023176 Rev 2 Contents1 General description .. list .. description .. 62 SPI communication flow .. description .. byte .. code definition .. status register .. error flag definition .. register (optional) .. 133 Address mapping .. address range .. address range .. 154 Write operation .. command format .. of data shifted out at SDO during write cycle .. 185 Read operation .. command format .. of data shifted out at SDO during Read cycle .. 206 Read and clear status operation .. and clear status command format .. of data shifted out at SDO during read and clear status operation 227 Read device information.
TN0897 SPI communication flow Doc ID 023176 Rev 2 9/28 Figure 3. Communication principle of the ST SPI 2.2 Command byte Each communication frame starts with …
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