GP2021 datasheet(2/62 Pages) MITEL

2 / 62 page

GP2021

TABLE OF CONTENTS

HEADING

PAGE

TYPICAL GPS RECEIVER

PIN DESCRIPTION

Differences between Real and Complex_Input Mode

FUNCTIONAL DESCRIPTION

12 CHANNEL CORRELATOR

Clock Generator

Timebase Generator

Status Registers

Sample Latches

Address Decoder

Bus Interface

TRACKING MODULES

Carrier DCO

Code DCO

Carrier Cycle Counter

C/A Code Generator

Source Selector

Carrier Mixers

Code Mixers

Accumulate and Dump

Code Phase Counter

Code Slew Counter

Epoch Counter

PERIPHERAL FUNCTIONS

Dual UART

Receiver

Transmitter

Reset

Channel Loopback

Real Time Clock (RTC) and Watchdog

Power and Reset Control

Power Down Mode

Hardware Reset Generation

System Error Status Register

Discrete I/O

Digital System Test Interface

MICROPROCESSOR INTERFACE

General Interface Timing

Write Cycle to Read Cycle Timings

Write Cycle to Write Cycle Timings

Notes about Interface Timing Constraints

ARM System Mode

Address Map

Control Signals

ARM System Timing

Wait State Generation

Debug (Abort) Function

Standard Interface Mode

Control Signals

Motorola Style Interface

Intel 80186 Style Interface

Intel 486 Style Interface

Reset

CONTROLLING THE GP2021

Search Operation

Carrier DCO Programming

Code DCO Programming

Code Generator Programming

Reading the Accumulated Data

Search on Other Code Phases

Data Bit Synchronisation

Reading the Measurement Data

Preset Mode

GP2021 数据表(PDF) 2 Page - Mitel Networks Corporation

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