VT5376V032 datasheet(13/30 Pages) STMICROELECTRONICS

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VT5376

I2C control register map

13/30

0x0A

[7]

Force Laser Out ON

If set to 1, 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

7Fh

Sets DAC current setting. To validate

the setting, register 0x0D will also

need to be written to (complement

data). With Rbin = 12K ohms,

0x7F: 3.4mA

0x00: 10mA.

0x0B

[0]

Laser Drive Enable

0: Current source OFF

1: Enable current source

[1]

Laser NEN Out

Laser NEN pin state

Note: This command is only valid if bit

[5] is 1

[2]

Laser NEN OD Enable

0: LASER_NEN 1.8V capable CMOS

1: LASER_NEN - OpenDrain 5V

tolerant

Note: This command is only valid if bit

[5] is 1

[3]

Force Laser Out High

0: Normal operation, LASEROUT set

by DAC

1: Set to 1 to detect short to GND on

LASER_OUT

[4]

Laser comp Enable

0: Disable fault detection comparators

1: Enable fault detection comparators

[5]

Laser NEN trk led n

0: LASER_NEN replaced by

TRK_LED pulse (LED)

1: LASER_NEN controlled by bits [1]

and [2] (Laser)

[6]

Laser Bias Enable

0: Disable bias current source

1: Enable bias current source

Note: valid only if bit [7] is high

[7]

Laser Bias Ctrl

0 : Laser bias is driven the same way

as laser drive (DAC)

1 : Laser bias is controlled with

laser_bias_enable signal (bit [6])

Table 7.

I2C control register map (continued)

Address

Bits

Name

R/W

Default

Description

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