LSM9DS1.....Can someone please explain DEN_A/G pin? The datasheet mentions this pin once and does NOT explain whether it should be driven by host or not.

[swenner]

Posted on February 10, 2017 at 20:05

The LSM9DS1 datasheet does not give a good description of the DEN_A/G pin.  Can someone add value to this?  Should it just be pulled high and never toggled by MCU?  Reference schematics of part from Sparkfun, etc. show the SDO output of the Magnetometer and Accel/Gyro are tied together.  My intuition thinks the pin is tied to an internal tri-state buffer and should be toggled to avoid the data contention between the two hardware machines (Mag and Accel/Gyro)

Thx

Steve 

[Miroslav BATEK]

Posted on February 13, 2017 at 12:01

Using DEN_A/G pin is possible to perform an external trigger synchronization/stamping of gyroscope data.

By default this functionality is not used, so you can leave this pin unconnected.