ETC EZGPM01

EZGPM01 data sheet
Device features
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 SiRFstar™IIe/LP architecture,
the module provides complete GPS signal
processing, thus providing accurate satellite
position data.
Fully self-contained 12 channel GPS
receiver
Fully EMI shielded
SiRFstar™ 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
-40ºC …85ºC
Very compact : 25.4 X 25.4 X 3 mm
Applications
Navigation
Aviation
Automotive applications
Location Based Services
Timing applications
The EZGPM01 is a completely shielded
module.
Key Features
Industry Leading GPS Performance
Builds on the high performance
SiRFstar™IIe/LP core
High-speed signal acquisition using
1920 time/frequency search channels
SBAS(Satellite Based Augmentation
System) support
Copyright © EAZIX, Inc. 2004. All Rights Reserved
Low Power GPS Architecture
Extreme low power in power-down
mode, but capable of very fast starts
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EZGPM01 data sheet
Maximizes GPS Position Availability
Multiple Operating Modes
SingleSat™ updates in reduced visibility
Superior urban canyon performance
FoliageLock™ or weak signal tracking
Continuous Mode
TricklePower™ Mode
Push-to-Fix™ Mode
Block Diagram
Antenna
Input
BOOTSELECT
XTAL
VANT
(Optional)
RF
Filter
LNA
XTAL
Power
Voltage
Regulator
GPS
Data
GRF2i/LP
RF IC
Reset
IC
RTC
GSP2e/LP
Signal
Processor
AGC
Clock
Data
Bus
Battery
1PPS
RXA/TXA
RXB/TXB
Address
Bus
FLASH
8Mbit
EZGPM01
Figure 1: EZGPM01 Block Diagram
Copyright © EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Mechanical Drawing
2.5mm
1.0mm
3.0mm
2mm
1.9mm
2mm
4.9mm
v
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 © EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Device Terminal Functions
16
15
17
14
18
13
19
12
20
11
21
10
22
9
23
8
24
7
25
6
26
5
27
4
28
3
29
30
2
1
Figure 3: EZGPM01 Terminals
Copyright © 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
I
I
O
I
I
I/O
I/O
I/O
I/O
I/O
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
One-pulse-per-second
Digital ground
Table 1: Device Terminal Functions
Copyright © 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
ºC
Operating Conditions
TA = 25ºC; 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
Min
3.0
Typ
3.3
Max
6
Units
V
Vbat
2.5
3.0
3.6
V
Vant
2.0
3.0
12
V
Icc
Itps
Condition
67
16.5
mA
mA
Ibat
Vcc = 3.3V
Vcc = 3.3V;
20% duty
cycle; 1 sec
update period
Vbat = 3.0V
3.8
A
Iant
Vant = 3.0V
18
mA
Topr
-40
85
ºC
Table 3: Operating Conditions
Electrical Specifications
General
Frequency
CA Code
Channels
L1, CA code, 1575.42 MHz
1.023 MHz chip rate
12
Sensitivity
Holding Sensitivity(C/N ave. 26dB-Hz)
-144dBm
Accuracy
Position
10 meters CEP (SA off)
Copyright © EAZIX, Inc. 2004. All Rights Reserved
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EZGPM01 data sheet
Velocity
Time
0.1 meters/second (SA off)
1 sec synchronized to GPS time
DGPS Accuracy
Position
Velocity
< 5 meters (SA off)
0.05 meters/second, typical
Datum
WGS-84
Time-To-First-Fix
Reacquisition
SnapStart™
Hot Start
Warm Start
Cold Start
100ms
< 3 seconds
< 8 seconds
< 38 seconds
< 45 seconds
Serial Port
Electrical Interface
Protocol support
2 full duplex serial communication
NMEA, SiRF binary, RTCM SC-104
Time – 1PPS
Level
Pulse Duration
Time Reference
Measurement
CMOS
100 ms
At the pulse positive edge
Aligned to GPS second
Table 4: Electrical Specifications
Operating Modes
TricklePower™ Description
The TricklePower™ 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 © EAZIX, Inc. 2004. All Rights Reserved
7
EZGPM01 data sheet
Push-to-Fix™ Description
The push-to-fix™ 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 © EAZIX, Inc. 2004. All Rights Reserved
8
EZGPM01 data sheet
Application Circuit
Figure 4: EZGPM01 Reference Design
Copyright © EAZIX, Inc. 2004. All Rights Reserved
9
EZGPM01 data sheet
Ordering and Contact Information
Order Number
Description
EZGPM01
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 [email protected] 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: [email protected]
Copyright © EAZIX, Inc. 2004. All Rights Reserved
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