Description

The GP4020 is a complete digital baseband processor for a Global Positioning System (GPS) receiver. It combines the 12-channel correlator function of the GP2021 with an advanced ARM7TDMI (Thumb) microprocessor to achieve a higher level of integration, reduced system cost, reduced power consumption and added functionality. The GP4020 complements the GP2015 and GP2010 C/A code RF downconverters available from Zarlink Semiconductor.

Features

• Complete GPS correlator and Firefly MF1 microcontroller core

• ARM 7TDMITM (Thumb®) Microprocessor, with JTAG ICEBreakerTM Debug Interface

• Fully Configurable External Data Bus

• 12 Fully Independent Correlation Channels

• Low Voltage Operation: 3·3V

• Low Current Power–Down Mode

• 1PPS UTC Aligned Timing Output

• Dual UART

• 3-wire BµILD Serial Input/Output (BSIO) Interface

• 8 General Purpose Input/Output (GPIO) Lines

• Boot ROM, allowing Software Upload via UART

• 8K Bytes Internal SRAM

• Compatible with GP2015 and GP2010 RF Front Ends

Applications

• GPS Navigation Systems

• GPS Geodetic Receivers

• Time Transfer Receivers

• Automatic Vehicle Location (AVL)

• E911 Emergency Positioning