I3G4250D Datasheet, PDF (25/43 Pages) STMicroelectronics – 3-axis digital output gyroscope

I3G4250D
5.2.1 SPI read
Figure 13. SPI read protocol
Digital interfaces
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The SPI read command is performed with 16 clock pulses. A multiple byte read command is
performed by adding blocks of 8 clock pulses to the previous one.
Bit 0: READ bit. The value is 1.
Bit 1: MS bit. When 0, does not increment address; when 1, increments address in multiple
reads.
Bit 2-7: address AD(5:0). This is the address field of the indexed register.
Bit 8-15: data DO(7:0) (read mode). This is the data that is read from the device (MSb first).
Bit 16-...: data DO(...-8). Further data in multiple byte reads.
Figure 14. Multiple byte SPI read protocol (2-byte example)
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