GT-1613-UB GPS Receiver Module General Description

GT-1613-UB
GPS Receiver Module
General Description
The GT-1613-UB module series is a f
amily of stand-alone GPS receivers featuri
ng the high performance u-blox 6 position
ing engine. These flexible and cost effecti
ve receivers offer numerous connectivity o
ptions in a miniature 15.9x13.1x2.6mm pa
ckage. Their compact architecture and po
wer and memory options make GT-1613-
Figure 1: GT-1613-UB Top View
UB modules ideal for battery operated mo
bile devices with very strict cost and spac
Applications
e constraints.

LBS (Location Based Service)
The 50-channel u-blox 6 positioning en

PND (Portable Navigation Device)
gine boasts a Time-To-First-Fix (TTFF) of

Vehicle navigation system
under 1 second. The dedicated acquisitio

Mobile phone
n engine, with over 1 million correlators, i
Features
s capable of massive parallel time/frequen

cy space searches, enabling it to find sat
Build on high performance, low-power
u-blox6xxxchipset
ellites instantly. Innovative design and tec

Ultra high sensitivity: -160dBm
hnology suppresses jamming sources and

Extremely fast TTFF at low signal level
mitigates multipath effects, giving GT-161

Built in high gain LNA
3-UB GPS receivers excellent navigation

Lowpowerconsumption:Max40mA@3.0V
performance even in the most challenging

NMEA-0183compliantprotocol or custom
environments.
protocol
GT-1613-UB modules are not designe

Operating voltage: 2.75V to 3.6V
d for life saving or supporting devices or

Operating temperature range:-40 to 85℃
for aviation and should not be used in pr

SMD type with stamp holes
oducts that could in any way negatively i

Small form factor: 15.9x13.1x2.6mm
mpact the security or health of the user

RoHS compliant (Lead-free)
or third parties or that could cause dama
ge to goods.
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Performance Specification
Parameter
Specification
Receiver Type
L1 frequency band, C/A code, 50-channels
SBAS: WAAS, EGNOS, MSAS, GAGAN
Sensitivity
Tracking
Acquisition
-160dBm
-160dBm
Accuracy
Position
Velocity
Timing (PPS)
5m CEP without SA
0.1m/s without SA
10ns RMS
Acquisition Time
Cold Start
Warm Start
Hot Start
Re-Acquisition
29s
28s
1s
<1s
Power Consumption
Tracking
Acquisition
Sleep/Standby
35mA @3V Vcc
40mA
TBD
NavigationDataUpdate Rate
1Hz
Operational Limits
Altitude
Velocity
Acceleration
Max 18,000m
Max 515m/s
Less than 4g
Interfaces Configuration
1.1Assisted GPS (A-GPS)
Supply of aiding information like ephemeris, almanac, rough last position and time and
satellite status and an optional time synchronization signal will reduce time to first fix
significantly and improve the acquisition sensitivity. GT-1613-UB modules support the u-blox
AssistNow Online and AssistNow Offline A-GPS services8 and are OMA SUPL compliant.
1.2 SuperSense Indoor GPS
GT-1613-UBmodulescomewithSuperSense,providingultra-fastacquisition/reacquisition and
exceptional tracking sensitivity. SuperSense enables best-in-class tracking and navigation in
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difficult signal environments such as urban canyons or indoor locations.
1.3 KickStart / Oscillators
An available feature is KickStart. This functionality uses a TCXO to accelerate weak signal
acquisition, enabling faster start and reacquisition times. KickStart is available with the
GT-1613-UB.
1.4 Protocols and interfaces
Protocol
Type
NMEA
Input/output, ASCII, 0183, 2.3 (compatible to 3.0)
UBX
Input/output, binary, u-blox proprietary
Table 3: Available protocols
Both protocols are available on UART, USB, DDC and SPI. For specification of the various
protocols see the u-blox6 Receiver Description including Protocol Specification [2].
GT-1613-UB modules support a number of peripheral interfaces for serial communication.
The embedded firmware uses these interfaces according to their respective protocol
specifications. For specific applications, the firmware also supports the connection of
peripheral devices, such as external memories, to some of the interfaces.
1.5UART
GT-1613-UB modulesincludeoneconfigurableUARTinterfaceforserial communication (for
information about configuration see section 1.11).
1.6USB
GT-1613-UBmodules provide a USB version 2.0 FS (Full Speed, 12Mbit/s) interface as an
alternative to the UART. The pull-up resistor on USB_DP is integrated to signal a full-speed
device to the host. The VDD_USB pin supplies the USB interface, independently from the
VDD_IO pin.
u-blox providesaMicrosoft®certifiedUSBdriver for Windows XP and WindowsVista operating
systems. Windows 7 will also be supported following certification
. Operating System
Support level
Windows XP
Certified
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Windows Vista
Certified
Windows 7
Certification pending
Table 4: Operating systems supported by USB driver
1.7 Serial Peripheral Interface (SPI)
An SPI interface is planned for future versions of GT-1613-UB modules. The SPI interface
allows for the connection of external devices with a serial interface, e.g. EEPROM or A/D
converters, or to interface to a host CPU. The interface can be operated in master or slave
mode. In master mode, one chip select signal is available to select external slaves. In slave
mode a single chip select signal enables communication with the host.
1.8 Display Data Channel (DDC)
The I2C compatible DDC interface can be used either to access external devices with a
serial interface (e.g. EEPROM or A/D converters) or to interface with a host CPU. It is capable
of master and slave operation and communicates at a rate of <100kbit/s. GPS.
1.9Antenna
GT-1613-UB modules are designed for use with passive and active9 antennas.
Parameter
Specification
Antenna Type
Active Antenna
Recommendations
Passive and active antenna
15 - 20 dB (to compensate signal loss
Minimum gain
Maximum noise figure
Maximum gain
in RF cable)
1.5 dB
50 dB
The maximum noise figure should be no more than 1.5dB and output impedance is at 50
Ohm.
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Table 5: Antenna Specifications for all GT-1613-UB modules
2.0Operating modes
GT-1613-UB modules have 2 continuous operating modes (Maximum Performance and
Eco). Maximum Performance mode freely uses the acquisition engine, resulting in the best
possible TTFF, while Eco mode optimizes the use of the acquisition engine to deliver lower
current consumption. At medium to strong signals, there is almost no difference for acquisition
and tracking performance in these modes.
2.1Maximum Performance mode
In Maximum Performance mode, u-blox 6 receivers use the acquisition engine at full
performance to search for all possible satellites until the Almanac is completely downloaded.
As a consequence, tracking current consumption level will be achieved when:
A valid GPS position is fixed
Almanac is entirely downloaded
Ephemeris for all satellites in view are valid
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2.2Eco mode
In Eco mode, u-blox 6 receivers use the acquisition engine to search for new satellites only
when needed for navigation:
In cold starts, u-blox 6 searches for enough satellites to navigate and optimizes use of the
acquisition engine to download their ephemeris.
In non-cold starts, u-blox 6 focuses on searching for visible satellites whose orbits are
known from the Almanac.
In Eco mode, the u-blox 6 acquisition engine limits use of its searching resources to
minimize power consumption. As a consequence the time to find some satellites at weakest
signal level might be slightly increased in comparison to the Max. performance mode.
u-blox 6 deactivates the acquisition engine as soon as a position is fixed and a sufficient
number (at least 4) of satellites are being tracked. The tracking engine continues to search and
track new satellites without orbit information.
2.3 Boot-time configuration
GT-1613-UB modules provide configuration pins for boot-time configuration. These become
effective immediately after start-up. Once the module has started, the configuration settings
may be modified with UBX configuration messages. The modified settings remain effective
until power-down or reset. If these settings have been stored in battery-backup RAM, then the
modified configuration will be retained, as long as the backup battery supply is not interrupted.
GT-1613-UB modules include a CFG_COM0 pin, which can be configured as seen in
Table 6. Default settings in bold.
CFG_COM0
Protocol
1
NMEA
0
NMEA
Messages
GSV, RMC, GSA,
GGA, GLL, VTG, TXT
GSV, RMC, GSA,
GGA, GLL, VTG, TXT
UARTBaud rate
9600
38400
USB Power
BUS
Powered10
Self
Powered
Table 6: Supported CFG_COM0 settings
GT-1613-UBinclude both CFG_COM0 and CFG_COM1 pins and can be configured as seen
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in
Table 7. Default settings in bold.
CFG_COM1
CFG_COM0
Protocol
Messages
UARTBaud
rate
GSV, RMC, GSA,
1
1
NMEA
GGA, GLL, VTG,
9600
TXT
GSV, RMC, GSA,
1
0
NMEA
GGA, GLL, VTG,
38400
TXT
0
1
NMEA
GSV10, RMC, GSA,
GGA, VTG, TXT
4800
USB power
BUS
Powered
Self
Powered
BUS
Powered
NAV-SOL,
NAV-STATUS,
0
0
UBX
NAV-SVINFO,
57600
NAV-CLOCK, INF,
BUS
Powered
MON-EXCEPT
External serial EEPROM
GT-1613-UBmodules allow an optional external serial EEPROM to be connected to the
DDC interface.
This feature is only supported by modules with ROM 6.0 and above.
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Pin Description
Pin
No.
Pin
name
I/O
Description
20
TIMEPU
LSE
O
Time pulse (1PPS)
1
RF_IN
I
GPS Signal Input
21
GND
G
Ground
2
GND
G
Ground
22
GND
G
Ground
3
GND
G
Ground
23
GND
G
Ground
4
GND
G
Ground
24
PGND
G
Ground
5
VBAT
P
Backup battery sup
ply voltage
25
MISO/CF
G_COM1
I/O
SPI MISO (Planne
d) / Configuration
Pin. Leave open if
not used.
26
GND
G
Ground
27 VDDUSB
I
USB Supply
6
PGND
G
Ground
7
BOOT
I
Boot Mode(Leave
Open if not used)
8
GND
G
Ground
9
GND
G
Ground
10
GND
G
Ground
28
GND
G
Ground
11
VCC
P
DC suppiy voltage
29
GND
G
Ground
12
GND
G
Ground
13
RESET
I
O
UART Serial Data
Output Pull up (75
KΩ) if not used
14
GND
G
Ground
15
PGND
G
Ground
31
RXD
I
UART Serial Data I
nput Pull up (75K
Ω) if not used
16
MOSI/CF
G_COM0
I/O
SPI MOSI/Configur
ation Pin(Planned)
32
USB_DM
I/O
USB Data
33
PGND
G
Ground
Ground
34
USB_DP
I/O
USB Data
NC
35
GND
G
Ground
Ground
36
GND
G
Ground
17
GND
18
NC
19
GND
G
G
Module
(Active Low)
Reset
30
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TXD
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Pin Assignment
Figure 2: GT-1613-UB Pin Packag
Mechanical Specification
Figure 3: GT-1613-UB Dimensions
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Electrical Characteristics
Absolute Maximum Rating
Parameter
Symbol
Min
Max
Units
Vcc
-0.3
3.6
V
Input Pin Voltage I/O
RXD
-0.3
3.6
V
Input Pin Voltage I/O
USB_VDD
-0.3
3.6
V
VBAT
2.0
3.6
V
Tstg
-40
125
°C
260
°C
95
%
Power Supply
Power Supply Volt.
Input Pins
Backup Battery
Environment
Storage Temperature
Peak Reflow Soldering Temperature
<10s
Tpeak
Humidity
Note: Absolute maximum ratings are stress ratings only, and functional operation at the
maxims is not guaranteed. Stress beyond the limits specified in this table may affect device
reliability or cause permanent damage to the device. For functional operating conditions, refer
to the operating conditions tables as follow.
Operating Conditions
Parameter
Symbol
Power supply voltage
Vcc
Power supply voltage
ripple
Vcc_PP
Condition
Vcc=3.0V
Page 10 of 18
Min
Typ
Max
Units
2.7
3.0
3.6
V
35
mV
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Consumption current
Icc
Input high voltage
VIH
Input low voltage
Vcc=3.0V
40
45
mA
0.7xVcc
Vcc+1.0
V
VIL
-0.3
0.3xVcc
V
Output high voltage
VOH
0.8xVcc
Vcc
V
Output low voltage
V OL
0
0.2xVcc
V
Operating temperature
Topr
-40
85
°C
NMEA 0183 Protocol
The NMEA protocol is an ASCII-based protocol, Records start with a $ and with carriage
return/line feed. GPS specific messages all start with $GPxxx where xxx is a three-letter
identifier of the message data that follows. NMEA messages have a checksum, which allows
detection of corrupted data transfers.
The Gotop GT-1613-UB supports the following NMEA-0183 messages: GGA, GLL, GSA,
GSV, RMC and VTG
Table 1: NMEA-0183 Output Messages
NMEA Record
DESCRIPTION
GGA
Global positioning system fixed data
GLL
Geographic position—latitude/longitude
GSA
GNSS DOP and active satellites
GSV
GNSS satellites in view
RMC
Recommended minimum specific GNSS data
VTG
Course over ground and ground speed
GGA-Global Positioning System Fixed Data
Table 2 contains the values of the following example:
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$GPGGA, 161229.487,3723.24751,N, 12158.34160,W, 1,07,1.0,9.0,M.0000*18
Table 2: GGA Data Format
Name
Example
Message ID
$GPGGA
UTC Position
161229.487
hhmmss.sss
Latitude
3723.24571
ddmm.mmmmm
N/S indicator
N
Longitude
12158.34160
dddmm.mmmmm
E/W Indicator
W
E=east or W=west
Position Fix Indicator
1
See Table 2-1
Satellites Used
07
Range 0 to 12
HDOP
1.0
Horizontal Dilution of Precision
MSL Altitude
9.0
meters
Units
M
meters
Geoids Separation
Units
Units
Description
GGA protocol header
N=north or S=south
meters
M
Age of Diff.Corr.
meters
second
Diff.Ref.Station ID
0000
Checksum
*18
<CR> <LF>
Null fields when DGPS is not Used
End of message termination
Table 2-1: Position Fix Indicators
Value
Description
0
Fix not available or invalid
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1
GPS SPS Mode, fix valid
2
Differential GPS, SPS Mode, fix valid
3
GPS PPS Mode, fix valid
GLL-Geographic Position – Latitude/Longitude
Table 3 contains the values of the following example:
$GPGLL , 3723.24755, N,12158.34161, W,161229.487, A*2C.
Table 3: GLL Data Format
Name
Example
Units
Description
Message ID
$GPGLL
Latitude
3723.24755
N/S Indicator
N
Longitude
12158.34161
dddmm.mmmmm
E/W Indicator
W
E=east or W=west
UTC Position
161229.487
Status
A
Checksum
*2C
GLL protocol header
ddmm.mmmmm
N=north or S=south
hhmmss.sss
A=data valid or V=data not valid
<CR> <LF>
End of message temination
GSA-GNSS DOP and Active Satellites
Table 4 contains the values of the following example:
$GPGSA , A, 3, 07, 02, 26,27, 09, 04,15, , , , , , 1.8,1.0,1.5*33.
Table 4: GSA Data Format
Name
Example
Message
$GPGSA
Units
Description
GSA protocol header
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Mode 1
A
See Table 4-2
Mode 2
3
See Table 4-1
Satellite Used
07
Sv on Channel 1
Satellite Used
02
Sv on Channel 2
…
…
…
Satellite Used
Sv on Channel 12
PDOP
1.8
Position Dilution of Precision
HDOP
1.0
Horizontal Dilution of Precision
VDOP
1.5
Vertical Dilution of Precision
Checksum
*33
<CR> <LF>
End of message termination
Table 4-1: Mode 1
Value
Description
1
Fix not available
2
2D
3
3D
Table 4-2: Mode 2
Value
Description
M
Manual-forced to operate in 2D or 3D mode
A
Automatic-allowed to automatically switch 2D/3D
GSV-GNSS Satellites in View
Table 5 contains the values of the following example:
$GPGSV , 2, 1, 07, 07, 79,048, 42, 02, 51,062, 43, 26, 36,256, 42, 27, 27, 138,42*71
$GPGSV, 2, 2, 07, 09, 23,313, 42, 04, 19, 159, 41, 15,12,041, 42*41.
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Table 5: GGA Data Format
Name
Example
Units
Description
Message ID
$GPGSV
Number of Message
2
Range 1 to 3
Message Number
1
Range 1 to 3
Satellites in View
07
Satellite ID
07
Elevation
79
degrees
Channel 1(Maximum 90)
Azinmuth
048
degrees
Channel 1(True, Range 0 to 359)
SNR(C/NO)
42
dBHz
GSV protocol header
Channel 1(Range 1 to 32)
…
Range 0 to 99,null when not tracking
…
Satellite ID
27
Channel 4(Range 1 to 32)
Elevation
27
degrees
Channel 4(Maximum 90)
Azimuth
138
degrees
Channel 4(True, Range 0 to 359)
SNR(C/NO)
42
dBHz
Checksum
*71
<CR> <LF>
Range 0 to 99, null when not tracking
End of message termination
Depending on the number of satellites tracked multiple messages of GSV data may be
required.
RMC-Recommended Minimum Specific GNSS Data
Table 6 contains the values of the following example:
$GPRMC, 161229.487, A, 3723.24751, N, 12158.34161, W, 0.13,309.62, 120598,, *10
Table 6: RMC Data Format
Name
Example
Units
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Description
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GPS Receiver Module
Message ID
$GPRMC
RMC protocol header
UTS Position
161229.487
Status
A
Latitude
3723.24751
N/S Indicator
N
Longitude
12158.34161
dddmm.mmmmm
E/W Indicator
W
E=east or W=west
Speed Over Ground
0.13
Knots
Course Over
309.62
Degrees
hhmmss.sss
A=data valid or V=data not valid
ddmm.mmmmm
N=north or S=south
True
Ground
Date
120598
Magnetic variation
Checksum
Dummy
Degrees
E=east or W=west
*10
<CR> <LF>
End of message termination
VTG-Course Over Ground and Ground Speed
Table 7 contains the values of the following example:
$GPVTG, 309.62, T, M, 0.13, N, 0.2, K*6E
Table 7: VTG Data Format
Name
Example
Message ID
$GPVTG
Course
309.62
Reference
T
Units
Description
VTG protocol header
Degrees
Measured heading
True
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Course
Degrees
Reference
M
Speed
0.13
Units
N
Speed
0.2
Units
K
Checksum
*6E
<CR> <LF>
Measured heading
Magnetic
Knots
Measured horizontal speed
Knots
Km/hr
Measured horizontal speed
Kilometer per hour
End of message termination
Manufacturing Process Recommendations
Note:The final soldering temperature chosen at the factory depends on additional external
factors like choice ofsoldering paste,size,thickness and properties of the baseboard,etc.
Exceeding the maximum soldering temperature in the recommended soldering profile may
permanently damage the module.
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©Copyright 2013 Gotop Technology Co., Ltd. All Right Reserved
The information contained herein is subject to change without notice.
Gotop Technology Co. ,LTD
Add:Room 603 Zhantao Technology Building,Minzhi Road,Xinniu Communnity,Minzhi
Street,Baoan District,ShenZhen City China.
Not to be reproduced in whole or part for any purpose without written permission of Gotop
Technology Inc (‘Gotop’). Information provided by Gotop is believed to be accurate and reliable.
These materials are provided by Gotop as a service to its customers and may be used for
informational purposes only. Gotop assumes no responsibility for errors or omissions in these
materials, nor for its use. Gotop reserves the right to change specification at any time without
notice.
These materials are provides ‘as is’ without warranty of any kind, either expressed or implied,
relating to sale and/or use of Gotop products including liability or warranties relating to fitness
for a particular purpose, consequential or incidental damages, merchantability, or infringement
of any patent, copyright or other intellectual property right. Gotop further does not warrant the
accuracy or completeness of the information, text, graphics or other items contained within
these materials. Gotop shall not be liable for any special, indirect, incidental, or consequential
damages, including without limitation, lost revenues or lost profits, which may result from the
use of these materials.
Gotop products are not intended for use in medical, life-support devices, or applications
involving potential risk of death, personal injury, or severe property damage in case of failure of
the product.
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