Enfora Enabler II-G Assisted GPS Modem Integration Guide As part of integration, each of the following interfaces must be verified:
Information Recommendations
SIM The maximum line length of the SIM interface is 25.4 cm (10 inches).
The Enfora Enabler II-G A-GPS module takes care of the signal
conditioning
As a minimum, an external application with a remote SIM will require a
standard SIM carrier.
Filter the SIM VCC signal with a 10 uf / 10 V capacitor to help with the line
length.
Primary and
secondary serial
Interfaces
The Enfora Enabler II-G A-GPS module uses a 1.8/3 V digital interface.
The RS-232 signals must be level-shifted to get standard levels. These
signals must be ESD-protected.
Reset Interface Resets the Enfora Enabler II-G A-GPS module when tied low.
Audio/Microphone
Interface Preliminary balancing on Enfora Enabler II-G A-GPS module.
Maximum length TBD