HMC5983-DEM Datasheet, PDF (24/28 Pages) Honeywell Accelerometers – 3-Axis Digital Compass IC

HMC5983
SPI Read
Figure 2: SPI Read Protocol
The SPI Read command is performed with 16 clocks pulses. Multiple byte read command is performed adding blocks of 8
clocks pulses at the previous one.
bit 0: READ bit. The value is 1.
bit 1: MS bit. When 0 do not increment address, when 1 increment address in multiple reading.
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 will be read from the device (MSb first).
bit 16-... : data DO(...-8). Further data in multiple byte reading.
SPI Write
Figure 3: Multiple Bytes SPI Read Protocol (2 bytes example)
Figure 4: SPI Write Protocol
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