lock and unlock FXLS9xxxx on DSI

[zssimon]

Hi All, 

can you please give sum support in the following questions?

I am using DSI interface

1. once configuration is done on the FXLS9xxxx dual axis accelerometer, how can I lock the setting? (OTP lock, not to allow user to change configuration)

2. once sensor is locked, how to unlock?

3. if a module is locked, is there any special initialization required to read out acceleration signals?

[diazmarin09]

Hello zssimon,

Please accept my apologies for the delayed response.

Once a region is written using the OTP Write sequence, the LOCK_Uxx bit in the appropriate CRC_xxx register is automatically set, locking the array from future writes. Register values in a region can be over-written using register write commands, but no new values can be written to the OTP.

If a region is locked, the value will always be reset to the OTP array value after a reset.

I do recommend contacting your sales representative as this feature is related to the factory programmed OTP configuration.

I hope this information helps.

Regards,

David

[diazmarin09]

Hello zssimon,

I hope all is great with you. Thank you for using the NXP communities.

I am looking for such information internally. We will do our best to get back to you as soon as possible with a resolution to your issue.

I will appreciate your patience and  your understanding.

Regards,

David