Reading data from FIFO in asynchronous mode

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Reading data from FIFO in asynchronous mode

The flow chart in Figure 1 illustrates how to read data from FIFO in asynchronous mode.

As explained in the product datasheet (see “Digital Interfaces”, Chapter 5, from page 23),

multi-byte reading (a.k.a. multi-read) is a smart modality which allows reading 6 bytes

consecutively, with significant time saving compared to single byte reading.

Hereafter it is explicitly indicated the part of the reading sequence starting from the dummy

read at '28h':

1.

Single read from register 28h

2.

"Multi-Read": sequential reading of 2Ah, 2Bh, 2Ch, 2Dh, 28h, 29h

This procedure must be repeated for each dataset (X/Y/Z) in the FIFO:



FSS times, if FSS

 31



(FSS + 1) times, if (FSS = 31) & (OVR = 1)

This procedure is valid whenever an asynchronous reading of the FIFO is to be executed,

both in "Stream" mode and in "FIFO" mode.