Quectel L20 Manual de usuario
L20 EVB User Guide
L20_EVB_User_Guide_V1.0 - 1 -
Document Title
L20 EVB User Guide
Version
1.0
Date
2010-12-20
Status
Release
Document Control ID
L20_EVB_User_Guide_V1.0
General Notes
Quectel offers this information as a service to its customers, to support application and
engineering efforts that use the products designed by Quectel. The information provided is
based upon requirements specifically provided to Quectel by the customers. Quectel has not
undertaken any independent search for additional relevant information, including any
information that may be in the customer’s possession. Furthermore, system validation of this
product designed by Quectel within a larger electronic system remains the responsibility of
the customer or the customer’s system integrator. All specifications supplied herein are
subject to change.
Copyright
This document contains proprietary technical information which is the property of Quectel
Limited. The copying of this document, distribution to others, and communication of the
contents thereof, are forbidden without express authority. Offenders are liable to the payment
of damages. All rights are reserved in the event of a patent grant or registration of a utility
model or design. All specification supplied herein are subject to change without notice at any
time.
Copyright © Shanghai Quectel Wireless Solutions Co., Ltd. 2010
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L20 EVB User Guide
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Contents
0. Revision History ...........................................................................................................................5
1. Introduction...................................................................................................................................6
1.1. Reference.............................................................................................................................6
1.2. Abbreviations ......................................................................................................................6
2. EVB Kit Introduction....................................................................................................................7
2.1. EVB Top and Bottom View.................................................................................................7
2.2. EVB Accessories.................................................................................................................9
3. Interface Application...................................................................................................................10
3.1. Power Interface .................................................................................................................10
3.2. UART Interface ................................................................................................................. 11
3.3. Antenna Interface ..............................................................................................................12
3.4. Switches ............................................................................................................................12
3.5. Operating Status LEDs......................................................................................................13
3.6. Test Points .........................................................................................................................14
4. EVB and Accessories..................................................................................................................15
5. Starting SiRFLive .......................................................................................................................16
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L20 EVB User Guide
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Table Index
TABLE 1: REFERENCE..........................................................................................................................6
TABLE 2: ABBREVIATIONS .................................................................................................................6
TABLE 3: PINS OF UART PORT ......................................................................................................... 11
TABLE 4: SWITCHES AND BUTTONS.............................................................................................. 13
TABLE 5: OPERATING STATUS LEDS ..............................................................................................13
TABLE 6: PINS OF J102 & J104...........................................................................................................14
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L20 EVB User Guide
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Figure Index
FIGURE 1: EVB TOP VIEW ...................................................................................................................7
FIGURE 2: EVB BOTTOM VIEW .........................................................................................................8
FIGURE 3: EVB ACCESSORIES ...........................................................................................................9
FIGURE 4: POWER INTERFACE ........................................................................................................10
FIGURE 5: UART INTERFACE ........................................................................................................... 11
FIGURE 6: ANTENNA INTERFACE ...................................................................................................12
FIGURE 7: SWITCHES.........................................................................................................................12
FIGURE 8: OPERATING STATUS LEDS ............................................................................................13
FIGURE 9: TEST POINTS J102 & J104 ...............................................................................................14
FIGURE 10: EVB AND ACCESSORY EQUIPMENTS .......................................................................15
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L20 EVB User Guide
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0. Revision History
Revision
Date
Author
Description of change
1.0
2010-12-20
Roy Chen
Initial
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L20 EVB User Guide
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1. Introduction
This document defines and specifies the usage of L20 EVB (Evaluation Board). Customer can get
useful information about L20 EVB and GPS demo tool from this document.
1.1. Reference
Table 1: Reference
SN
Document name
Remark
[1]
L20_HD
Hardware Design
1.2. Abbreviations
Table 2: Abbreviations
Abbreviation
Description
C/NO
Carrier/Noise
GPS
Global Positioning System
HDOP
Horizontal Dilution of Precision
SV
Satellite Vehicle
UART
Universal Asynchronous Receiver & Transmitter
USB
Universal Serial Bus
UTC
Universal Time Coordinated
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L20 EVB User Guide
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2. EVB Kit Introduction
2.1. EVB Top and Bottom View
Figure 1: EVB top view
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L20 EVB User Guide
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Figure 2: EVB bottom view
A: GPS UART port
B: Antenna interface
C: Adapter interface
D: Test points
E: L20 Module
F: POWER switch
G: NC switch (Reserve for future development)
H: NC botton (Reserve for future development)
I: Indication LEDs
J: MCU UART port (no use)
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L20 EVB User Guide
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2.2. EVB Accessories
Figure 3: EVB accessories
A: GPS active antenna (3.3V)
B: Serial port cable (USB 2.0)
C: DC5V/2A power adapter
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