The data from the accelerometer is provided in twos complement format. The most significant word (upper 16 bits) and the least significant word (lower 16 bits) are used to represent the data. The MSB in the least significant word has a specific weight, which may affect the interpretation of the data.
Resolution:
- Confirm if the part is experiencing acceleration towards gravity. If yes, it will show +1g.
- Double-check the configuration settings to ensure they are correct according to the device's specifications.
- Ensure that the data is being interpreted correctly, considering the twos complement format.
- Verify if this issue is observed with the evaluation board.
- If the issue persists, review the datasheet for any additional configuration details or contact technical support for further assistance.