2.2

State machine description

The figure below shows the device state machine.

Power Off

Host removes AVDD

Host applies AVDD

HW Standby

Host lowers XSHUT

Host raises XSHUT

SW Standby

Host clears interrupt

Next range starts

automatically after Host

has cleared the interrupt

Host initiates STOP

Automatic move

Continuous

Ranging

Initial Boot

Self-Calibration

Host initiates START

Automatic move

2.3

Customer manufacturing calibration flow

Up to three calibrations are needed to guarantee the best sensor performances. Offset and RefSpad calibration

are needed in all applications. If a cover glass is used, the crosstalk calibration is needed also.

“Generic shape” crosstalk calibration is also available. In this case, part-to-part calibration is not needed and a

standard set of calibration values is loaded.

The detailed procedure is provided in the device driver user manual.

2.4

Device programming and control

The VL53L3CX physical control interface is I2C, described in Section 3 Control interface.

A software layer (driver) is provided to control the device. This avoids complex I2C register operations with

turnkey functions to start, stop and read the ranging values.

The driver structure and functions are described in the device driver user manual.

VL53L3CX

State machine description

DS13204 - Rev 2

page 7/35