ADXL193 readings

Hello,

I have a ADXL193 from Sparkfun. https://www.sparkfun.com/products/9332

When i use an analog pin to read in the values from the chip, the value i get is about 335.

What does this actually mean?

Cheers

This looks like feeding unit from 3v3 and 5v as reference voltage for DAC.
Feed accelerometer 5V to get a near 511 reading for zero acceleration