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EZGPM01 data sheet
Device features
Fully self-contained 12 channel GPS receiver Fully EMI shielded SiRFstarTM IIe/LP architecture * GRF2i/LP RF front-end IC * GSP2e/LP GPS Engine with Integrated Processor SBAS(Satellite Based Augmentation System) support Fast time-to-first-fix 8Mbit Flash memory Built-in Low-noise amplifier Advanced low power modes Operating Voltage 3.3V Battery supply pin for internal backup memory and real time clock Passive and active antenna support Active antenna bias supply voltage pin Active antenna overcurrent protection Industrial operating temperature range -40C ...85C Very compact : 25.4 X 25.4 X 3 mm Applications Navigation Aviation Automotive applications Location Based Services Timing applications
EZGPM01
GPS RECEIVER
Product Information Data Sheet MARCH 2004
General Description The EZGPM01 GPS Receiver is a fully selfcontained single-board 12 channel parallel receiver module intended as a component for OEM Global Positioning System(GPS). Based on the SiRFstarTMIIe/LP architecture, the module provides complete GPS signal processing, thus providing accurate satellite position data. The EZGPM01 is a completely shielded module.
Key Features
Industry Leading GPS Performance Builds on the high performance SiRFstarTMIIe/LP core High-speed signal acquisition using 1920 time/frequency search channels SBAS(Satellite Based Augmentation System) support Low Power GPS Architecture Extreme low power in power-down mode, but capable of very fast starts
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Maximizes GPS Position Availability SingleSatTM updates in reduced visibility Superior urban canyon performance FoliageLockTM or weak signal tracking
Multiple Operating Modes Continuous Mode TricklePowerTM Mode Push-to-FixTM Mode
Block Diagram
Antenna Input
BOOTSELECT
XTAL GPS Data AGC Clock
VANT (Optional)
LNA
RF Filter
XTAL
RTC GSP2e/LP Signal Processor 1PPS RXA/TXA RXB/TXB
GRF2i/LP RF IC
Power Battery
Voltage Regulator
Reset IC
Data Bus
Address Bus
FLASH 8Mbit
EZGPM01
Figure 1: EZGPM01 Block Diagram
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Mechanical Drawing
2.5mm
1.0mm
3.0mm
2mm
2mm 4.9mm v
1.9mm
2.8mm 25.4mm 9.4mm 1.277mm
8mm 1.5mm 25.4mm
6.35mm
12.6mm
Figure 2: EZGPM01 recommendations for layout and pads
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Device Terminal Functions
16 17 18 19 20
15 14 13 12 11
21 22 23 24 25 26 27 28 29 30
10 9 8 7 6 5 4 3 2 1
Figure 3: EZGPM01 Terminals
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Terminal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Terminal Name VCC DGND BOOTSELECT RXA TXA TXB RXB GPIO3 RF_ON DGND AGND AGND AGND AGND AGND AGND RF_IN AGND V_ANT VCC_RF V_BAT RESET_N GPIO10 GPIO6 GPIO5 GPIO7 GPIO0 GPIO1 T-MARK(1PPS) DGND
I/O I I I O O I I/O O
Description 3.3V DC supply voltage Digital ground Boots in update mode when high Serial Data Input A Serial Data Output A Serial Data Output B Serial Data Input B Indicates RF part is ON Digital ground Analog ground Analog ground Analog ground Analog ground Analog ground Analog ground Antenna input Analog ground Supply for active antenna 2.85V output of RF section External backup battery Resets the module when low
I I O I I I/O I/O I/O I/O I/O I/O O
One-pulse-per-second Digital ground
Table 1: Device Terminal Functions
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
5
EZGPM01 data sheet
Electrical Characteristics
Absolute Maximum Ratings Parameter Power Supply Voltage Input Pin Voltage Antenna Bias Current Storage Temperature Symbol Min Max Vcc 6 Vin 5 Iant 100 Tstg -55 +125 Table 2: Absolute Maximum Ratings Units V V mA C
Operating Conditions TA = 25C; 3V active antenna Parameter Power Supply Voltage Backup Battery Voltage Antenna Bias Voltage Supply Current TricklePower Supply Current Standby Battery Current Antenna Bias Current Operating Temperature Symbol Vcc Vbat Vant Icc Itps Vcc = 3.3V Vcc = 3.3V; 20% duty cycle; 1 sec update period Vbat = 3.0V Vant = 3.0V -40 Table 3: Operating Conditions Condition Min 3.0 2.5 2.0 Typ 3.3 3.0 3.0 67 16.5 Max 6 3.6 12 Units V V V mA mA
Ibat Iant Topr
3.8 18 85
A mA C
Electrical Specifications General Frequency CA Code Channels Sensitivity Holding Sensitivity(C/N ave. 26dB-Hz) Accuracy Position Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
L1, CA code, 1575.42 MHz 1.023 MHz chip rate 12 -144dBm 10 meters CEP (SA off) 6
EZGPM01 data sheet
Velocity Time DGPS Accuracy Position Velocity Datum Time-To-First-Fix Reacquisition SnapStartTM Hot Start Warm Start Cold Start Serial Port Electrical Interface Protocol support Time - 1PPS Level Pulse Duration Time Reference Measurement
0.1 meters/second (SA off) 1 sec synchronized to GPS time < 5 meters (SA off) 0.05 meters/second, typical WGS-84 100ms < 3 seconds < 8 seconds < 38 seconds < 45 seconds 2 full duplex serial communication NMEA, SiRF binary, RTCM SC-104 CMOS 100 ms At the pulse positive edge Aligned to GPS second Table 4: Electrical Specifications
Operating Modes
TricklePowerTM Description The TricklePowerTM mode provides the lowest average power dissipation by powering down the module after a position fix. It cycles through three states: tracking state(or full power), cpu state, and trickle state. The receiver is in the full power tracking state when it is first turned on, after a system reset, and when the internal RTC wakeup interrupt is generated. Satellite search, initial acquisition, initial position calculation, and tracking measurements are always taken in full power. In the CPU state, the RF antenna section and GPS clock has been turned off, although the RTC keeps running. The CPU would keep running to process the GPS data until a position fix is determined and the result has been transmitted by the serial communication interface. The trickle state is a low power standby state in which the CPU clock and RF circuits are turned off but power is still applied to the baseband. After a set amount of time, the receiver wakes up, makes a reset and tries to acquire satellites.
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
7
EZGPM01 data sheet
Push-to-FixTM Description The push-to-fixTM mode puts the receiver into a background duty cycle mode that provides a periodic refresh of position, GPS time, ephemeris data, and RTC calibration every 30 minutes. The push-to-fix mode sets the receiver in a background duty cycle consisting of 30 seconds of On time in the tracking state at full power, followed by a position computation in the CPU state, followed by approximately 29.5 minutes in the trickle state.
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
8
EZGPM01 data sheet
Application Circuit
Figure 4: EZGPM01 Reference Design Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Ordering and Contact Information
Order Number EZGPM01 Description MOQ is 1k. Leadtime: 12-16 weeks
All trademarks mentioned in this document are property of their respective owners. SiRF and SiRF logo are registered trademarks of SiRF Technology, Inc. SiRFstar, SingleSat, SnapLock, SnapStart, FoliageLock, Push-to-Fix, TricklePower are trademarks of SiRF Technology, Inc.
EAZIX, Inc. Unit 301 Plaz@ Building B 6530 Northgate Avenue, Filinvest Corporate City Alabang, Muntinlupa City Philippines 1770 Tel: + 632 772-4941 + 632 772-4942 + 632 772-4943 Fax: + 632 772-4944 Website: http://www.eazix.com/ E-mail: info@eazix.com
Copyright (c) EAZIX, Inc. 2004. All Rights Reserved
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