User Guide

The GPS system is connected to RAPIDO ASIC.

Figure 44 Block diagram of the GPS system

USB

The device supports USB 2.0 full speed, with micro-USB connector.

USB connection is implemented using the Application ASIC D4800 USB controller interface and N2300 EM

ASIC’s USB transceiver. External interface is the micro-B connector. The interface between N2300 transceiver

and micro-B receptacle is standard USB interface specified Universal Serial Bus specification Rev. 2.0. The USB

transfers signal and power over four-wire interface. Interface carries differential data, Vbus and GND.

Signalling occurs over differential data line, D+ and D-. The clock is transmitted, encoded along with the

differential data. ESD protection is done with USB ASIP. VBUS (+5V) is provided by the host device.

RM-313

System Module

Issue 1 COMPANY CONFIDENTIAL Page 6 –15