STV-376-E01 STMICROELECTRONICS [STMicroelectronics], STV-376-E01 Datasheet - Page 13

• Manufacturer Part Number: STV-376-E01
• Description: Ultra-low power laser motion sensor for laser mouse applications
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

VT5376
Table 7.
Address
0x0A
0x0B
Bits
[6:0]
[7]
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
I2C control register map (continued)
Force Laser Out ON
DAC current setting
Laser Drive Enable
Laser NEN Out
Laser NEN OD Enable
Force Laser Out High
Laser comp Enable
Laser NEN trk led n
Laser Bias Enable
Laser Bias Ctrl
Name
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Default
7Fh
0h
0h
1h
1h
0h
0h
0h
0h
0h
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,
register 0x0D will also need to be
written to (complement data).
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.
0: Current source OFF
1: Enable current source
Laser NEN pin state
Note: This command is only valid if bit
[5] is 1
0: LASER_NEN 1.8V capable CMOS
1: LASER_NEN - OpenDrain 5V
tolerant
Note: This command is only valid if bit
[5] is 1
0: Normal operation, LASEROUT set
by DAC
1: Set to 1 to detect short to GND on
LASER_OUT
0: Disable fault detection comparators
1: Enable fault detection comparators
0: LASER_NEN replaced by
TRK_LED pulse (LED)
1: LASER_NEN controlled by bits [1]
and [2] (Laser)
0: Disable bias current source
1: Enable bias current source
Note: valid only if bit [7] is high
0 : Laser bias is driven the same way
as laser drive (DAC)
1 : Laser bias is controlled with
laser_bias_enable signal (bit [6])
I2C control register map
Description
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