DocID029474 Rev 2

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L20G20IS

Digital interfaces

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6.1.1

SPI read

3-wire mode is entered by setting the (SIM) bit equal to ‘1’ (SPI serial interface mode

selection).

Figure 6. SPI read protocol

The SPI read command is performed with 16 clock pulses:

bit 0: READ bit. The value is 1.

bit 1: MS bit. When 0, does not increment the address; when 1, increments the 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 will be read from the device (MSb

first).

A multiple read command is also available.