Related Manuals for Maestro A2100-A
Summary of Contents for Maestro A2100-A
- Page 1 GPS Receivers A2100-A/B A Description of Maestro’s GPS Receiver Module A2100-A/B User’s Manual Version 1.2...
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Page 2: Revision History
VANT is an input 04-15-10 Label correction; adaptations after firmware 4.0.1 release; others … 02-09-11 1.Shutdown sequence introduced; more figures defined; smaller corrections 2. New style; moved to Maestro 05-04-11 1. Order number correction 2. Modify MEMS details 3. Modify packaging describe 05-17-11 1. - Page 3 WIRELESS SOLUTIONS LIMITED. IT MAY NOT BE COPIED OR TRANSMITTED BY ANY MEANS, PASSED TO OTHERS, OR STORED IN ANY RETRIEVAL SYSTEM OR MEDIA, WITHOUT PRIOR CONSENT OF MAESTRO OR ITS AUTHORIZED AGENTS. THE INFORMATION IN THIS DOCUMENT IS, TO THE BEST OF OUR KNOWLEDGE, ENTIRELY CORRECT.
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Page 4: Table Of Contents
3.4 Improved TTFF ....................16 3.5 Firmware Updates................... 16 4 Mechanical Outline ..................17 4.1 Details Component Side A2100-A / B ............. 17 4.2 Details Solder Side A2100-A/B ............... 18 5 Pin-out Information ..................19 5.1 Layout A2100-A ....................19 5.2 Description A2100-A Signals ................ - Page 5 8.2.2 Active Antennas......................28 9 Quality and Reliability..................29 9.1 Environmental Conditions ................29 9.2 Product Qualification ..................29 9.3 Production Test ....................29 10 Applications and Hints .................. 30 10.1 Initial Module Start ..................30 10.2 Proper Shutdown ..................30 10.3 SiRFaware Support ...................
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Page 6: Introduction
Abrupt removal or droop of power while the module is running has risks ranging from minor impact on TTFF to fatal, permanent corruption of flash memory code area! While the A2100-A is a module designed for a 3.3V environment, the A2100-B works with 1.8V Vcc and 1.8V I/Os. -
Page 7: Characteristics Overview
100% tested and shipped in standard tape-and-reel package. 1.3 RoHS and Lead-Free Information Maestro’s products marked with the lead-free symbol either on the module or the packaging comply with the "Directive 2002/95/EC of the European Parliament and the Council on the Restriction of Use of certain Hazardous Substances in Electrical and Electronic Equipment"... -
Page 8: Label
1.4 Label The A2100-A labels hold the following information: Figure 1: A2100-A label The label is placed on the shield of the module. The data matrix code holds the product type, software version, software release, hardware release, factory code, year & week of assembly and a 6-digit serial number. The A2100-B's labels show a "B"... -
Page 9: Characteristics
A2100-A/B Weight 1.2 g, 0.042 oz Table 2: A2100-A/B dimensions and weight 1.6 Handling Precautions The GPS receiver module A2100-A/B is sensitive to electrostatic discharge (ESD). Please handle with appropriate care. V1.2 – May-11 User’s Manual Page 9 of 37... -
Page 10: Ordering Information
If no firmware version is referenced in an order, the latest version will be provided. 2.2 Packing of the A2100-A/B The A2100-A/B GPS modules come in a tape and reel package suitable for pick and place machines. Figure 2: A2100-A/B tape specifications (1) V1.2 –... - Page 11 Figure 3: A2100-A/B tape specifications (2) Figure 4: A2100-A/B tape specifications (3) One complete reel holds 900 A2100-A/B modules. There are 2 kinds of packaging for shipment: A: One box holds 1 reel Reel diameter: 33 cm Inner box dimensions: 36(W) x 36(L) x 4.5 (H) cm Box dimensions: 38.8 (W) x 38.8 (L) x 5.7 (H) cm...
- Page 12 B. One box holds 3 reels Reel diameter: 33 cm Inner box dimensions: 36 (W) x 36 (L) x 4.5 (H) cm Outer box dimensions: 38 (W) x 38 (L) x 16 (H) cm Gross weight: 6.13 Kg Net weight: 3.51 Kg V1.2 –...
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Page 13: Additional Equipment
2.3 Additional Equipment EVA2100-A Evaluation Kit (including one module A2100-A) Table 3: Additional equipment A detailed description of the EVA2100-A Evaluation Kit can be found in the appropriate manual. The evaluation boards are always shipped with latest firmware loaded. NOTE: Only the EVA2100-A is available, there is no specific EVA2100-B. -
Page 14: Quick Start
3 Quick Start In order to allow an easy and quick start with the A2100-A module, this chapter provides a short overview on the important steps to be taken to receive NMEA messages with position information on a serial port (UART). -
Page 15: Antennas
The A2100-A supports passive antennas via an integrated LNA directly. 3.2.2 Active Antennas The A2100-A also supports active antennas directly, i.e. by offering an antenna voltage feed pin (VANT – pin 15). It is recommended to use an active antenna with a supply voltage of 3 to 5 VDC and a maximum current draw of 50 mA. -
Page 16: Serial Port Settings
If later firmware changes are considered in a design it is necessary to connect the BOOTSEL pin of the A2100-A/B. As long as this pin is open or pulled to GND, the module will enter normal operation. When this pin is pulled HIGH to a 1.8V level the module will enter boot mode. -
Page 17: Mechanical Outline
4 Mechanical Outline 4.1 Details Component Side A2100-A / B 15.24 (0.6) 15.24 (0.6) All dimensions in [mm, (inch)] Figure 7: Mechanical outline component side A2100-A/B V1.2 – May-11 User’s Manual Page 17 of 37... -
Page 18: Details Solder Side A2100-A/B
2.54 2.54 7.62 7.62 Solder pad size (outer pads): 1.0 x 0.8 Solder pad size (inner pads): 1.5 x 1.5 All dimensions in [mm] Figure 8: Mechanical outline solder side A2100-A/B V1.2 – May-11 User’s Manual Page 18 of 37... -
Page 19: Pin-Out Information
N.C. N.C. N.C. “Pin 1” marker Figure 9: Pin-out information (bottom view) A2100-A Green Description: Host interface pins Red Description: MEMS interface pins (Firmware405 just supports KXSD9) Blue Description: Other Center Ground pins are for shock / vibration resistance purpose. -
Page 20: Description A2100-A Signals
SPI data out pin when module works in SPI mode Input Serial input 0, NMEA in if configured for UART SPI DI SPI data in pin when module works in SPI mode Table 4: Pin description A2100-A V1.2 – May-11 User’s Manual Page 20 of 37... -
Page 21: Layout A2100-B
5.3 Layout A2100-B Bottom Bottom RX0 / SPI DI / I2C DIO [1.8V] RX0 / SPI DI / I2C DIO [1.8V] nRST [IN – 1.8V] nRST [IN – 1.8V] TX0 / SPI DO / I2C CLK [1.8V] TX0 / SPI DO / I2C CLK [1.8V] BOOTSEL [IN –... -
Page 22: Description A2100-B Signals
5.4 Description A2100-B Signals Pin Symbol Function Description nRST Input Reset input (open / HIGH – no reset, LOW - reset) Connect to open collector / open drain output! BOOTSEL Input Special boot mode – leave open for normal operation; HIGH –... -
Page 23: Electrical Characteristics
6.1 Operating Conditions Description Typical 3.0V 3.3V 3.6V Peak Acquisition Current 45mA Average Acquisition Current 35mA Tracking Current 24mA Table 6: A2100-A electrical characteristics Description Typical 1.7V 1.8V 1.9V Peak Acquisition Current 62mA Average Acquisition Current 43mA Tracking Current 30mA... -
Page 24: Dc Electrical Characteristics
Voh @ 4mA Vol @ 4mA 0.45 nRST for safe reset ON_OFF 1.35 -0.3 0.45 BOOTSEL 1.35 Table 9: PRELIMINARY DC electrical characteristic A2100-A Symbol Parameter Max Unit TX0, WAKEUP Voh @ 4mA Vol @ 4mA nRST for safe reset ON_OFF 1.35... -
Page 25: Mounting
7 Mounting This chapter describes the suggested mounting process for the A2100-A receiver modules. In a RoHS compliant product with a RoHS compliant process it is recommended to use chemical tin as the counter-part to the module’s pins. This will guarantee highest resistance against shocks. -
Page 26: Use Of Gps Antennas
Vias to GND Layer GPS receiver solder pads Figure 11: Antenna connector strip line A2100-A/B In order to achieve the impedance of 50 Ω, the width of the strip line needs to be calculated. It depends on the thickness or height of the PCB layer (both parameters are shown in following drawing). - Page 27 In this case, the width should be about 1.8 times the height of the PCB: W = 1.8 x H In the example, one would get a width of W = 1.8 x 0.8 mm = 1.44 mm. V1.2 – May-11 User’s Manual Page 27 of 37...
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Page 28: Antenna Connections
8.2 Antenna Connections 8.2.1 Passive Antennas A passive antenna connected to ANT input (pin 12) should be placed as close as possible to the GPS receiver. The signal power lost by the antenna cable or lost by the strip line on the PCB can not be recovered by the LNA (Low Noise Amplifier) integrated in the GPS receiver. -
Page 29: Quality And Reliability
• High Temperature Operating Life +85°C • Vibration Variable Frequency • Mechanical Shock Please contact Maestro for detailed information. 9.3 Production Test Each module is electrically tested prior to packing and shipping to ensure state of the art GPS receiver performance and accuracy. -
Page 30: Applications And Hints
TTFF to fatal, permanent corruption of flash memory code area on the module. A controlled and orderly shutdown while the A2100-A/B is running in full power mode can be initiated by • A 100ms pulse on the ON_OFF pin, or •... -
Page 31: Hibernate Mode
duty cycles, it is necessary to toggle the ON_OFF pin. Toggling is done by pulling the signal to HIGH for about 100ms. 10.5 Hibernate Mode In order to enter Hibernate Mode it is necessary to send a shutdown command or to toggle to ON_OFF pin by pulling the signal to HIGH for about 100ms. -
Page 32: Antenna Status Adaptation
10.7 Antenna Status Adaptation This chapter shall give assistance in designing a circuit for detecting if an active antenna is connected to the module. The information about the antenna status can be derived from the ANTSTAT signal generated by this circuit. The examples use values for components that roughly result in the following ANTSTAT output: •... -
Page 33: Antenna Sensor With Current Limiter
10.7.2 Antenna Sensor with Current Limiter This proposal is similar to the first one, but includes a current limiter. Comments and notes as above apply. We strongly recommend simulating and testing the GPS receiver integrated in your product design before implementing the finalized product in the appropriate market application. -
Page 34: Vant Pin
Vant pin. The easiest way to do that is to connect Vcc to VANT. The maximum current is 50 mA. Note: Shortcut between ANT and GND may damage the A2100-A GPS receiver module. This should be avoided by using an antenna current limiter. -
Page 35: Evaluation Kit Eva2100-A
For demonstration and easy evaluation of GPS performance Maestro offers an evaluation kit (including one GPS A2100-A module). It contains a USB interface with according drivers to connect easily to a PC. The USB interface is an extension of the serial port 0, therefore sending NMEA sentences or binary information and accepting commands. -
Page 36: Related Information
This manual was created with due diligence. We hope that it will be helpful to the user to get the most out of the GPS module. Inputs regarding errors or mistaken verbalizations and comments or proposals to Maestro, Hongkong, for further improvements are highly appreciated. Maestro Wireless Solutions Limited Add:Unit 3603-09,36/F.,... -
Page 37: List Of Figures
Figure 9: Pin-out information (bottom view) A2100-A..........19 Figure 10: Pin-out information (bottom view) A2100-B........... 21 Figure 11: Antenna connector strip line A2100-A/B ..........26 Figure 12: Strip line parameters A2100-A/B............26 Figure 13: Application note: Antenna sensor adaptation........32 Figure 14: Application note: Antenna sensor adaptation with current limiter..