LSM330D Datasheet, PDF (38/66 Pages) STMicroelectronics – Low power mode

Digital interfaces
Figure 19. SPI read protocol in 3-wire mode
LSM330D
CS
SPC
SDI/O
RW
D O7 D O6 D O5 DO4 DO3 DO2 DO1 DO0
MS AD5 AD 4 AD 3 AD2 AD1 AD 0
AM10134V1
The SPI read command is performed with 16 clock pulses:
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).
Multiple read command is also available in 3-wire mode.
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Doc ID 022562 Rev 2