N900 Hardware GPS

The GPS in the N900 is a TI GPS5030 - navilink 5. [1]

The Navilink series is detailed here.

The GPS is not connected to the main CPU, but to the processor in the phone module, hence cannot be directly communicated with. [2]

Bugs

A number of users have reported poor or no lock in circumstances where the phone should obtain a GPS lock.

See this (now closed) bug for more information and if you are still affected by this. (read all of the bug carefully)