VT5376 datasheet(14/30 Pages) STMICROELECTRONICS

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I2C control register map

VT5376

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0x0C

[5]

Rbin Low

0: Rbin above threshold

1: Rbin below threshold (shorted to

GND)

Note: if Laser_Comp_Enable (reg

0x0B, bit [4]) = 0, Rbin_Low=1

[6]

Laser Low

0: Laser OUT above LOW threshold

1: Laser OUT below LOW threshold

(shorted to GND).

Note: if Laser_Comp_Enable = 0,

Laser_Low = 1

[7]

Laser High

0: Laser OUT below HIGH threshold

1: Laser OUT above HIGH threshold

(shorted to VDD).

Note: if Laser_Comp_Enable = 0,

Laser_High = 1

0x0D

[7]

Force Laser Out ON (Compl)

If set to 0, this sets the LASER_OUT

DAC always ON (instead of toggling

normally). This mode is provided in

case the DAC current needs

calibrating. To confirm this mode,

written to (complement data).

[6:0]

DAC current setting (Compl)

00h

Sets DAC current setting. To validate

the setting, register 0x0A will also

need to be written to (complement

data). With Rbin = 12K ohms,

0x00: 3.4mA

0x7F: 10mA

0x21

[7:0]

X_motion

This register holds the overall X

movement data since last polling was

done.

Value is 8 bit 2’s complement.(1)

0x22

[7:0]

Y_motion

This register holds the overall Y

movement data since last polling was

done.

Value is 8 bit 2’s complement.(1)

0x23

[0]

X Overflow

This register records if the X-motion

integrator has reached its limit.

[1]

Y Overflow

This register records if the Y-motion

integrator has reached its limit.

[3]

No Motion

This bit is asserted if both X/Y

integrators are empty

Table 7.

I2C control register map (continued)

Address

Bits

Name

R/W

Default

Description

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