Leadtek LR9552 User Manual

LR9552 GPS Module

1. INTRODUCTION..................................................................................................................1

1.1. FEATURES.......................................................................................................... 1

HARDWARE AND SOFTWARE ........................................................................................... 1

PERFORMANCE .............................................................................................................. 1

INTERFACE .................................................................................................................... 1

2. MODULE ARCHITECTURE ..............................................................................................2

2.1. DIMENSIONS ....................................................................................................... 3

2.2. SOFTWARE FEATURES ........................................................................................ 3

2.3. ENVIRONMENTAL SPECIFICATION ......................................................................... 4

2.4. REFERENCE DESIGN............................................................................................ 4

2.5. REGULATIONS COMPLIANCE................................................................................. 5

3. PERFORMANCE CHARACTERISTICS...........................................................................7

3.1. POSITION AND VELOCITY ACCURACY..................................................................... 7

3.2. DYNAMIC CONSTRAINS ........................................................................................ 7

3.3. ACQUISITION TIME 1............................................................................................. 7

3.4. TIMING 1PPS OUTPUT......................................................................................... 8

3.5. SENSITIVITY........................................................................................................ 8

4. HARDWARE INTERFACE POWER SUPPLY.................................................................9

4.1. SPECIFICATIONS.................................................................................................. 9

I. Pin Positions ....................................................................................................................9

II. Pin Assignment...............................................................................................................10

5. SOFTWARE INTERFACE.................................................................................................11

6. MECHANICAL DRAWING AND FOOTPRINT............................................................12

6.1. OUTLINE DRAWING ........................................................................................... 12

7. PACKAGE............................................................................................................................13

7.1. PACKAGE SPECIFICATIONS ................................................................................ 13

8. ROHS COMPLIANT INFORMATION............................................................................14

8.1. ROHS SOLDERING PROFILE ............................................................................... 14

Reflow Profile.........................................................................................................................14

GLOSSARY..................................................................................................................................15

LR9552 Manual V04

1. Introduction

The Leadtek GPS 9952 module (LR9552) is a high sensitivity and very compact smart antenna module, with built in GPS receiver circuit. This 20-channel global positioning system (GPS) receiver is designed for a wide range of OEM applications and is based on the fast and deep GPS signal search capabilities of SiRFStarIII™ architecture. Leadtek GPS 9552 is designed to allow quick and easy integration into GPS-related applications such as:

λ PDA, Pocket PC, and other computing devices λ Car and Marine Navigation λ Fleet Management /Asset Tracking λ AVL and Location-Based Services λ Hand-Held Device for Personal Positioning and Navigation

1.1. Features

Hardware and Software

λ Based on the high performance features of the SiRF GSC3f/LP single chip λ Compact module size for easy integration: 25 x 25 x 8.9 mm (with 4 mm patch antenna)

25 x 25 x 6.9 mm (with 2 mm patch antenna) [option]

λ Fully automatic assembly: reflow solder assembly ready λ Hardware compatible with SiRF GSW3.2 serial software

Performance

λ Cold/Warm/Hot Start Time: 42/38/1 sec. λ Reacquisition Time: 0.1 second. λ RF Metal Shield for best performance in noisy environments.

Interface

λ RS232 or TTL (option) level serial port for GPS communications interface λ Protocol: NMEA-0183/SiRF Binary (default NMEA). λ Baud Rate: 4800 ~ 57600 baud (default 4800).

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2. Module architecture

LR9552

9552LP ( RS232 ) Block Diagram

25mm Patch Antenna

16.369MHz TCXO

bandpass

LNA

filter

SiRF GSC3f / LP

2.85 VDC regulator

voltage

detector

32.768KHz Crystal

1.50 VDC regulator

RS232

Transceiver

NMEA output

backup battery

5.0VDC power in

9552 ( TTL ) Block Diagram

25mm Patch Antenna

16.369MHz TCXO

bandpass

LNA

filter

32.768KHz Crystal

serial IO

NMEA output

SiRF GSC3f

2.85 VDC regulator

voltage

detector

5.0VDC power in

1.50 VDC regulator

backup battery

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2.1. Dimensions

The Physical dimensions of the Leadtek 9552 GPS Module are as follow:

Items Description

Length 25.0 ± 0.3 mm Width 25.0 ± 0.3 mm

Height

8.90 ± 0.3 mm

6.90 ± 0.3 mm

Weight

13.0g (w/ 4mm patch antenna)

8.0g (w/ 2mm patch antenna)

2.2. Software Features

The Leadtek 9552 module includes GSW3.2., high sensitivity software solution. For SiRFStarIII/LP receivers, the default configuration is as follows:

Item Description

Core of firmware 3.2 SiRF GSW Baud rate 4800, 9600, 19200, 38400 or 57600 bps (default 4800) Code type NMEA-0183 ASCII Datum WGS-84 Protocol message GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec)GGA(1sec), Output frequency 1 Hz

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2.3. Environmental Specification

Item Description

Operating temperature rang (note) -30 deg. C to +60 deg. C Storage temperature range -30 deg. C to +65 deg. C Humidity up to 95% non-condensing or a wet bulb temperature of +35 deg. C Altitude 18,000 meters (60,000 feet) max. Velocity 515 meters/second (1000 knots) max. Jerk 20 meters/second3, max.

Acceleration 4g, max.

Note: The module can be operated between -30℃~+85℃, but higher temperature may cause internal Li backup battery deterioration that will influence the performance of GPS hot start.

2.4. Reference design

The user can use a PMOS to control 9552 power on or off as below:

IRLML6402

VCC 5.0 VD C

ON / OFF C ontrol

To 9552LP pin7 VC C_5V

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2.5. Regulations compliance

RoHS: This device complies with the Restr rdous Substances (RoHS) directive that is

enforce o must with RoHS compliance.

d on 1st July 2006, saying all electr nic products sold in the EU

iction of Haza

LR9552 Manual V04

FCC/CE: This device complies with the Federal Communications Commission (FCC), an independent United States gove

rnment agency regulating interstate and international communications by radio, television, wire, satellite and cable, and CE, an European electromagnetic waves emission and immunity party, regulations.

Please note that the compliances of this device are for this SMD module itself only. The complete system compliance must be examined and certified whenever you put this SMD inside.

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3. P

erformance Characteristics

3.1.

Position and velocity accuracy

Position

Accuracy

Velocity 0.1 meters/second Time 1 microsecond synchronized to GPS time

3.2. Dynamic constrains

Altitude 18,000 meters (60,000 feet) max.

Dynamic

Conditions

Velocity 515 meters/second (1000 knots) max.

Acceleration 4g, max.

10 meters, 2D RMS 5 meters 2D RMS, WAAS corrected <5meters(50%).

Jerk 20 meters/second

, max.

3.3. Acquisition time 1

Mode

TTFF Hot

(valid almanac, position, time & ephemeris)

TTFF Warm

(valid almanac, position, & time)

TTFF Cold

(valid almanac)

re-acquisition

(<10 s obstruction with valid almanac, positio

& ephemeris)

Note 1: Open Sky and Stationary Environments.

n, time

Leadtek 9552 GPS

Module

1 s

38 s

42 s

100 ms

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3.4. Timing 1PPS output

The 1PPS pulse width is 1 µs, this 1PPS is NOT suited to steer various oscillators (timing receivers, telecommunications system, e

3.5. Sensitivity

Parameter Description

Tracking Sen 58 dBm sitivity -1 Acquisition Sensitivity -142 dBm

tc).

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4. Hardware Interface Power supply

Parameter Leadtek 9552 GPS Module

Input voltage 3.2 ~ 5.0V DC input. Current (typ) at full power (3.3V) 55mA Battery backup voltage 5.0V DC input. 1.65 ~

4.1. Specifications

I. Pin Positions

Pin 7

Pin 1

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II. Pin Assignment

Pin No. Define Pin No. Define

1 GND 5 RXDB 2 TXDA 6 TIMEMARK 3 RXDA 7 VCC_5V 4 TXDB

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5. Software interface

The host serial I/O port of the module’s serial data interface supports full duplex communication between the module and the user. The default serials are shown in Table 5-1.

Port Protocol Description

Port A NMEA 0183, 9600 bps GGA, GSA, GSV, GLL, RMC, VTG Port B

The Leadtek LR9552 module includes GSW3 high sensitivity software solution.

N/A N/A

Table 5-1 Leadtek 9552 GPS module default baud rates

Features include:

λ High tracking sensitivity λ High configurability λ 1 Hz position update rate λ System (RTOS) friendly

Real-time Operating

Capable of outputting both NMEA and SiRF-proprietary binary protocols

λ Designe t c er tasks executed teg M7TDM1 processor λ Runs in full power operation or optional power saving mod

d to accep ustom us on the in rated AR

GSW3 default configuration is as follows:

Item Description

Core of firmware Baud rate Code type Datum Protocol message Output frequency

GSW3.2 serial 4800, 9600, 19200, 38400 or 57600 bps (default 4800) NMEA-0183 ASCII WGS-84 GGA(1sec), GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec) 1 Hz

LR9552 Manual V04

6. Mechanical drawing and footprint

6.1. Outline Drawing

(4mm patch anten

na)

Items Description

Length 25.0 ± 0.3 mm Width 24.0 ± 0.3 mm

8.90 ± 0.3 mm

Height

6.90 ± 0.3 mm

(2m patch antenna) m

LR9552 Manual V04

7. Package

7.1. Package specificat

Tolerance: ±10mm

ions

5.5 cm

5 cm

9 cm

λ Electric Specifica

tion: Surface impedance

λ Relative humidity: 50% λ Relative temperature: 24℃ ~ 28℃ λ Bubble diameter: 1cm λ Color: pink λ With SGS Test Report λ Dimension: 90mm(W) x 55mm + 50mm (L)

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8. RoHS compliant information

By July 1, 2006, all electronic products sold in the EU must be free of hazardous materials, such as lead. Leadtek is filly committed to maintaining backwards compatibility and focusing on a continuously high level of product and manufacturing qualit

8.1. RoHS soldering profile

Reflow Profile

being one of the first to introduce lead-free GPS Products while

High quality, low defect soldering requires identifying the optimum t e profile for reflowing

emperatur the solder paste. To have the correct profile assures components, boards, and solder joints are not damaged and reliable solder connection is achievable. Profiles are essential for establishing and maintaining processes. You must be able to repeat the profile to achieve process consistency. The heating and cooling rise rates must be compatible with the solder paste and components. The amount of time that the assembly is exposed to certain temperatures must first be defined and then maintained. The following is an example of a typical thermal profile.

LR9552 Manual V04

Glossary

A-GPS

Assisted GPS or AGPS is a technology that uses an assistance server to cut down the time needed to find the location. Although GPS provides excellent position accuracy, position fixes require lines of sight to the satellites. In regular GPS networks there are only GPS satellites and GPS receivers. In A-GPS networks, the receiver, being lim locations for position fixing, communicates with the and access to a reference network. Although depende quicker and more efficient than regular GPS.

API

An application programming interface is a set of definitions of the way one piece of computer software communicates with another.

One of the primary purposes of an API is to provide a set of commonly used functions, such as to draw windows or icons on the screen. Programmers can then take advantage of the API by making use of its functionality, saving them the task of programming everything from scratch.

aud Rate

ited in processing power and normally under less than ideal

assistance server that has high processing power

nt on cellular coverage, AGPS processing is

Is a measure of the signaling rate, which is the number of changes to the transmission media per second in a modulated signal. For Example: 250 baud means that 250 signals are transmitted in one second. If each signal carries 4 bits of information then in each second 1000 bits are transmitted. This is abbreviated as 1000 bit/s.

Dead Reckoning

The process of estimating your position by advancing a known position using course, speed, time and distance to be traveled. It is figuring out where you will be at a certain time if you hold the speed, time and course you plan to travel.

Differential GPS (DGPS)

An extension of the GPS system that uses land-based radio beacons to transmit position corrections to GPS receivers. DGPS reduces the effect of selective availability, propagation delay, etc. and can improve position accuracy to better than 10 meters.

EGNOS

A satellite navigation system being developed by the European Space Agency, the European Commission, and EUROCONTROL. It is intended to supplement the GPS and GLONASS systems by reporting on the reliability and accuracy of the signals. According to specifications, horizontal position accuracy should be better than 7 meters. In practice, the horizontal position accuracy is at the meter level. It will consist of three geostationary satellites and a network of ground stations. Similar service is provided in America by the WAAS system. See WAAS.

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European Geostationary Navigation Overlay System

See EGN

OS.

LNA

A special type of electronic amplifier or amplifier used in communication systems to amplify very weak signals captured by an antenna. It is usually located at the antenna and is a key component, which is placed at the front-end of a receiver system.

ow Noise Amplifier

See L

NA.

Multi-path mitigation

Anticipating errors caused when a satellite signal reaches the GPS receiver antenna by more than one path. Usually caused by one or more paths being bounced or reflected off of structures near the

ntenna a

a larger pseud

NMEA

An U.S. standards committee that defines data message structure, contents, and protocols to allow the GPS receiver to communicate with other pieces of electronic equipment.

nd occurs to some extent everywhere. The signal which traverses a longer path will yield a

o range estimate and increase the error.

National Marine E

lectronics Association

See NMEA.

PPS

Pulse which is generated on have a pulse-per-second or P

ce per second. GPS and some radio clocks and related timekeeping gear

PS signal that is needed for high accuracy time synchronization. The PPS signal can be connected in either of two ways, either through the data leads of a serial port or through the modem control leads. Either way requires conversion of the PPS signal, Most GPS devices emit an rs-232 serial stream wit

evices are small realtime systems with the satellite tracking done at high priority, positioning done at

d medium p (variance

riority, and time output done at low priority. The timestamps often have +- 200 ms of jitter in delay), and output a PPS signal on the exact second.

h some kind of timestamp format. Many GPS

SMD

Electronic device components that are mounted directly onto the surface of printed circuit boards (PCBs). In the industry it has largely replaced the previous construction method of fittin with wire leads into holes in the circuit board (also called through-hole tech

nology).

g components

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Surface Mount Device

See SMD.

TCXO

An electronic device that uses the mechanical resonance of a physical crystal to create an electrical signal with a very precise frequency and can be embedded in integrated circuits. TCXO reduces the

nvironmental changes of temperature, humidity, a

nd vibration, to keep a stable output frequency.

Temperature Controlled Crystal Oscillator

See TCXO.

ime To First Fix (TTFF)

The time it takes a GPS

receiver to find satellites after you first turn it on, when the GPS receiver has lost memory, or has been moved over 300 miles from its last location. Standard TTFF Timing consists of:

Mode Requires Timing

Snap Start Hot + Clock + Sat Pos 3 minutes off Hot Start Warm + Ephemeris 30 minutes off Warm Start Position Accuracy

Time Accuracy Almanac <1 year

Cold Start Nothing N/A

Specifi cations are typical times assuming good satellite visibility and above threshold signal strengths.

WAAS

A system of satellites and ground stations that provide GPS signal corrections for better position accuracy. A WAAS-capable receiver can give you a position accuracy of bett percent of the time. (At this time, the system is still in the development stage and is not fully operational.) WAAS consists of approximately 25 ground reference stations positioned across the United States that monitor GPS satellite data. Two master stations, located on either coast, collect data from the reference stations and create a GPS correction message.

<500 KM <2 hours

er than three meters, 95

Wide A

rea Augmentation System

See WAAS.

LR9552 Manual V04

eadtek Research Inc.

8F, 166, Chien-Yi Rd.,

hung Ho, Taipei Hsien,

aiwan (235)

2006 Leadtek Research, Inc.

l rights reserved. l

ersion 0.4

ar. / 2007

Leadtek LR9552 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.1. Features

Hardware and Software

Performance

Interface

2. Module architecture

Items Description

Length 25.0 ± 0.3 mm Width 25.0 ± 0.3 mm

Height

8.90 ± 0.3 mm

6.90 ± 0.3 mm

Weight

13.0g (w/ 4mm patch antenna)

Item Description

Item Description

Operating temperature rang (note) -30 deg. C to +60 deg. C Storage temperature range -30 deg. C to +65 deg. C Humidity up to 95% non-condensing or a wet bulb temperature of +35 deg. C Altitude 18,000 meters (60,000 feet) max. Velocity 515 meters/second (1000 knots) max. Jerk 20 meters/second3, max.

Position and velocity accuracy

I. Pin Positions

Port A NMEA 0183, 9600 bps GGA, GSA, GSV, GLL, RMC, VTG Port B

Table 5-1 Leadtek 9552 GPS module default baud rates

Items Description

Length 25.0 ± 0.3 mm Width 24.0 ± 0.3 mm

8.90 ± 0.3 mm

Height

6.90 ± 0.3 mm

Reflow Profile

A-GPS

Dead Reckoning

Differential GPS (DGPS)

EGNOS

European Geostationary Navigation Overlay System

Multi-path mitigation

NMEA

Surface Mount Device

TCXO

Temperature Controlled Crystal Oscillator

Mode Requires Timing

WAAS