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LEADTEK GPS MODULE
LR9101X
Specifications Sheet
Features:
ALL INFORMATION CONTAINED HEREIN IS THE SOLE PROPERTY OF LEADTEK RESEARCH AND CANNOT BE
DISSEMINATED WITHOUT THE EXPRESS WRITTEN CONSENT OF LEADTEK RESEARCH.
SiRF StarIII low power single chipset
Compact module size for easy integration : 15 x 14 x 2.8 mm
Built-in high gain amplifier and bandpass filter
RoHS compliance
Revision History:
Revision
Release Date
Issuer
Change Description
1.0
2008/10/06
J. Lee
LR9101LR9101X
1.1
2008/12/25
J. Lee
Modify the power consumption
1.2
2009/03/17
J. Lee
Upgrade to FW3.5 and add the RoHS soldering profile
1.3
2009/09/15
J. Lee
Modify the pin assignment
1.4
2009/09/30
S. Liao
Modify the pin assignment
Revision History:
Revision
Release Date
Issuer
Change Description
1.0
2008/10/06
J. Lee
LR9101LR9101X
1.1
2008/12/25
J. Lee
Modify the power consumption
1.2
2009/03/17
J. Lee
Upgrade to FW3.5 and add the RoHS soldering profile
1.3
2009/09/15
J. Lee
Modify the pin assignment
© 2009 Leadtek Research Inc. All rights reserved. Page 1/19
Leadtek Confidential - Information is subject to change without prior notice.
LR9101X Specifications Sheet Rev. 1.3
1. Introduction
The Leadtek LR9101X module is a high sensitivity, high gain, low power and very
compact Surface Mount Device (SMD). This 20-channel global positioning system (GPS)
receiver is designed for a broad spectrum of OEM applications and is based on the fast
and deep GPS signal search capabilities of SiRFStarIII GSC3f/LPx architecture,
consuming . Leadtek LR9101X is designed to allow quick and easy integration into
GPS-related applications, especially for compact size devices, such as:
PDA, Pocket PC and other computing devices
Fleet Management / Asset Tracking
AVL and Location-Based Services
Hand-held Device for Personal Positioning and Navigation
1.1 Features
1.1.1 Hardware and Software
Based on the high performance features of the SiRFStar III GSC3f/LPx chipset.
Built-in high gain amplifier and bandpass filter
RoHS compliant (lead-free)
Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil).
SMT pads allow for fully automatic assembly processes equipment and reflow soldering
SiRFLocTM Client AGPS support
1.1.2 Performance
Cold/Warm/Hot Start Time: 35 / 35 / 1 sec.
Reacquisition Time: 0.1 second
RF Metal Shield for best performance in noisy environments
Multi-path Mitigation Hardware
Enhanced Navigation Performance
Improved Jamming Mitigation
Improved Ephemeris Availability
© 2009 Leadtek Research Inc. All rights reserved. Page 2/19
Leadtek Confidential - Information is subject to change without prior notice.
LR9101X Specifications Sheet Rev. 1.3
1.1.3 Interface
TTL level serial port for GPS communications interface
Protocol: NMEA-0183/SiRF Binary (default NMEA)
Baud Rate: 4800 bps
1.2 Advantages
Ideal for compact size devices
Data / Power / RF through surface mount pads
Cost saving through elimination of RF and board to board digital connectors
Flexible and cost effective hardware design for different application requirements
Secure SMD PCB mounting method
© 2009 Leadtek Research Inc. All rights reserved. Page 3/19
Leadtek Confidential - Information is subject to change without prior notice.
LR9101X Specifications Sheet Rev. 1.3
2. Technical specifications
2.1. Module architecture
1.20 VDC
SiRF GSC3f/LPx
9101X Block Diagram
© 2009 Leadtek Research Inc. All rights reserved. Page 4/19
Leadtek Confidential - Information is subject to change without prior notice.
LR9101X Specifications Sheet Rev. 1.3
2.2. Hardware Features
Based on the high performance features of the SiRFStarIII GSC3f/LPx chipset
Built-in high gain amplifier and bandpass filter
Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil)
SMT pads allow for fully automatic assembly processes equipment and reflow soldering
RoHS compliant (lead-free)
2.3. Software Features
The firmware used on Leadtek 9101X module is GSW3.5, the software for SiRFStarIII
low power single chipset receivers and its features include:
Excellent sensitivity
High configurability
I Hz position update rate
Supports use of satellite-based augmentation systems like the US WAAS or European
EGNOS system
Real-time Operating System (RTOS) friendly
Capable of outputting either NMEA(default) or SiRF proprietary binary protocols
Designed to accept custom user tasks executed on the integrated ARM7TDM1
processor
Runs in full power operation (default) or optional power saving modes
Enhanced Navigation Performance
Improved Jamming Mitigation
Improved Ephemeris Availability
Default configuration is as follows:
Item
Description
Core of firmware
SiRF GSW3.5
Baud rate
4800 bps
Code type
NMEA-0183 ASCII
Datum
WGS-84
© 2009 Leadtek Research Inc. All rights reserved. Page 5/19
Leadtek Confidential - Information is subject to change without prior notice.
LR9101X Specifications Sheet Rev. 1.3
Protocol message
GGA(1s), GSA(5s), GSV(5s), RMC(1s),VTG(1s)
Output frequency
1 Hz
2.4. Mechanical specification
The Physical dimensions of the Leadtek 9101X GPS Module are as follow:
Items
Description
Length
15.0 ± 0.3 mm
Width
14.0 ± 0.3 mm
Height
2.80 ± 0.3 mm
Weight
1.8 g
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