SAA1575HL Datasheet, PDF (2/56 Pages) NXP Semiconductors – Global Positioning System GPS baseband processor

Philips Semiconductors
Global Positioning System (GPS)
baseband processor
CONTENTS
8
1
FEATURES
9
2
GENERAL DESCRIPTION
10
3
QUICK REFERENCE DATA
11
4
ORDERING INFORMATION
12
5
BLOCK DIAGRAM
13
6
PINNING
14
7
FUNCTIONAL DESCRIPTION
14.1
7.1
Overview
7.2
The 80C51XA processor
14.2
7.3
The GPS correlators
14.3
7.4
Memory organization
14.4
7.4.1
Data memory space
14.5
7.4.2
Code memory space
7.5
7.5.1
CPU peripheral features
Timers/counters
15
7.5.2
Watchdog timer
16
7.5.3
UARTs
7.5.4
RF IC programming port
7.5.5
General purpose I/O
7.6
The real-time clock
7.7
The external bus
7.7.1
Program memory chip select
7.7.2
Data memory chip select
7.7.3
Read strobe
7.7.4
Write LOW byte strobe
7.7.5
Write HIGH byte strobe
7.8
Backup supplies and reset
7.8.1
Supply domains
7.8.2
Power-down design strategy
7.8.3
System reset control
7.8.4
Power saving modes
7.9
Clock signals and oscillators
7.9.1
System clock (XTAL1)
7.9.2
RTC clock (XTAL3)
7.9.3
Reference clock (RCLK)
Product specification
SAA1575HL
LIMITING VALUES
THERMAL CHARACTERISTICS
DC CHARACTERISTICS
AC CHARACTERISTICS
DEFAULT APPLICATION AND
DEMONSTRATION BOARD
PACKAGE OUTLINE
SOLDERING
Introduction to soldering surface mount
packages
Reflow soldering
Wave soldering
Manual soldering
Suitability of surface mount IC packages for
wave and reflow soldering methods
DEFINITIONS
LIFE SUPPORT APPLICATIONS
1999 Jun 04
2