描述 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.

特性 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