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V2.0 – Jan-13

User’s Manual

Page 16 of 41

3.3 Serial Port Settings

In UART operation (defined by the external pull-up resistor as outlined in Minimum
Configuration) the default settings are:

•

NMEA, 4800 baud, 8 data bits, no parity, 1 stop bit, no flow control

3.4 Improved TTFF

In order to improve the TTFF (Time To First Fix), it is recommended to keep Vcc
supplied at all times. This will allow taking advantage of sophisticated low power
mode features of the SiRFstarIV chip set. More details can be found in chapter
“Application Notes”.

3.5 Firmware Updates

(Flash-based module only)

Firmware upgrade function is only valid for Flash-based module. If later firmware
changes are considered in a design it is necessary to connect the BOOTSEL pin of
the A2100. BOOTSEL pin is used to control the mode of operation mentioned on
table below:

BOOTSEL Operating

mode

Leave open

Normal operation

Pull up to 1.8V

Boot loader active for firmware upgrade

Table 4: BOOTSEL operating mode

A specific tool (SiRFFlash) is required for firmware upgrade upon request to Maestro.
Recommended circuitry on application board was indicated below.

Figure 7: BOOTSEL application

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Содержание A2100-A/B

Страница 1: ...GPS Receivers A2100 A B A Description of Maestro s GPS Receiver Module A2100 A B User s Manual Version 2 0 ...

Страница 2: ...moved to Maestro 1 1 05 04 11 1 Order number correction 2 Modify MEMS details 3 Modify packaging describe 1 2 05 17 11 1 Tracking current updated 1 3 06 03 11 1 Correction of Mechanical Characteristics 1 4 10 28 11 1 Updated Table 6 7 A2100 A B electrical characteristics 2 Add sensor description 1 5 01 04 12 Add describe of the EVA2100 B 1 6 03 01 12 1 Add Firmware Updates information 1 7 05 24 12...

Страница 3: ...D FOR USE IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF MAESTRO THIS DOCUMENT MAY PROVIDE LINKS TO OTHER WORLD WIDE WEB SITES OR RESOURCES BECAUSE MAESTRO HAS NO CONTROL OVER SUCH SITES AND RESOURCES MAESTRO SHALL NOT BE RESPONSIBLE FOR THE AVAILABILITY OF SUCH EXTERNAL SITES OR RESOURCES AND DOES NOT ENDORSE AND IS NOT RESPONSIBLE OR LIABLE FOR ANY CONTENT ADVERTISING...

Страница 4: ...Antennas 15 3 3 Serial Port Settings 16 3 4 Improved TTFF 16 3 5 Firmware Updates Flash based module only 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 20 5 3 Layout A2100 B 21 5 4 Description A2100 B Signals 22 6 Electrical Characteristics 24 6 1 Operating Condi...

Страница 5: ...SiRFawareTM Support 33 10 4 Push to Fix Mode 33 10 5 Hibernate Mode 34 10 6 Extended Ephemeris 34 10 7 Antenna Status Adaptation 35 10 7 1 Antenna Sensor 35 10 7 2 Antenna Sensor with Current Limiter 36 10 8 VANT Pin 37 10 9 TM_GPIO5 pin 1 pulse per second pin 37 10 10 5 Hz Navigation Update Rate 38 11 Evaluation Kit EVA2100 A B 39 12 Related Information 40 12 1 Contact 40 12 2 Related Documents 4...

Страница 6: ...op 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 1 1 Feature Overview The A2100 A and A2100 B are based on the well established A1084 outline and offer new outstanding features Fast responsive location...

Страница 7: ... form factor of 15 24 mm x 15 24 mm 0 6 x 0 6 Supported temperature range 40 C to 85 C Single sided SMT component for reflow soldering Tape reel packaging The A2100 A and A2100 B receiver modules are available as off the shelf compo nents 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 mod...

Страница 8: ...de 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 instead of the A e g A2100 B405 01 01 NOTE Hardware revision rr of the series product starts with 01 A hardware revi sion above 50 shows the module was produced before the product was fully qualified Engineering Samples ...

Страница 9: ...e calibrated clock of the receiver has not stopped thus it knows precise time to the µs level 3 The receiver has estimates of time date position and valid almanac and ephemeris data 4 The receiver has estimates of time date position and recent almanac 5 The receiver has no estimate of time date position and no recent almanac Note Performance sensitivity and TTFF might slightly decrease below 30 C ...

Страница 10: ...he A2100 A module and A2100 B for the A2100 B module The xxx refers to the current firmware version on the module If no firmware version is refe renced 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 ...

Страница 11: ... 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 Gross weight 2 05 Kg Net weight 1 17 Kg ...

Страница 12: ... Jan 13 User s Manual Page 12 of 41 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 ...

Страница 13: ...on Kit including one module A2100 A EVA2100 B Evaluation Kit including one module A2100 B Table 3 Additional equipment A detailed description of the EVA2100 A B Evaluation Kit can be found in the ap propriate manual The evaluation boards are always shipped with latest firmware loaded ...

Страница 14: ...hows the minimum configuration for NMEA or binary outputs received and commands sent via an RS232 interface based on the GPS module A2100 A using a passive antenna A2100 A GSD4e UART ON_OFF Tx Rx GND 3 3V ANT_EXT ANT_GND Vcc Shown from top without lid pads shown for better understanding Pin 1 marker 10kΩ nRST A2100 A GSD4e UART ON_OFF Tx Rx GND 3 3V ANT_EXT ANT_GND Vcc Shown from top without lid p...

Страница 15: ...32 or equivalent External antenna input impedance is 50 Ω Match as close as possible 3 2 Antennas Generally the quality of the GPS antenna chosen passive or active is of paramount importance for the overall sensitivity of the GPS system Losses through a bad an tenna long cables or tracks or a bad antenna position can t be compensated after wards 3 2 1 Passive Antennas The A2100 A supports passive ...

Страница 16: ...set More details can be found in chapter Application Notes 3 5 Firmware Updates Flash based module only Firmware upgrade function is only valid for Flash based module If later firmware changes are considered in a design it is necessary to connect the BOOTSEL pin of the A2100 BOOTSEL pin is used to control the mode of operation mentioned on table below BOOTSEL Operating mode Leave open Normal opera...

Страница 17: ...n 13 User s Manual Page 17 of 41 4 Mechanical Outline 4 1 Details Component Side A2100 A B 15 24 0 6 15 24 0 6 15 24 0 6 15 24 0 6 All dimensions in mm inch Figure 8 Mechanical outline component side A2100 A B ...

Страница 18: ...7 62 2 54 12 7 1 27 15 24 7 62 1 5 x 1 5 1 0 x 0 8 1 27 1 27 2 54 15 24 13 716 7 62 2 54 12 7 1 27 15 24 7 62 1 5 x 1 5 1 0 x 0 8 1 27 1 27 2 54 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 9 Mechanical outline solder side A2100 A B ...

Страница 19: ...TM_GPIO5 OUT 1 8V 16 VANT IN 3 3 to 5VDC 15 4 WAKEUP OUT 3 3V 5 Vout OUT 1 8V TX0 SPI DO OUT 3 3V 21 I2C CLK OUT 1 8V 17 I2C DIO I O 1 8V 18 ON_OFF IN 3 3V 19 ExtInt IN 1 8V 20 12 13 14 15 16 17 18 19 20 21 22 12 13 14 15 16 17 18 19 20 21 22 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND 1 nRST IN 3 3V 2 BOOTSEL IN 1 8V 3 Vc...

Страница 20: ...pen 12 ANT Antenna Input Antenna signal Z 50 Ohm antenna input must not exceed 30dB gain including cable loss 13 ANT_GND RF GND Antenna Ground 14 N C None Leave open 15 VANT Antenna Supply Voltage Input Power supply input for external active antenna provide ac cording voltage up to 5 0 VDC switched internally 16 TM_GPIO5 Output Time Mark 1PPS signal 17 I2C CLK Output I2C clock Output to MEMS inter...

Страница 21: ...20 21 22 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND 1 nRST IN 1 8V 2 BOOTSEL IN 1 8V 3 N C 6 GND 7 GND 8 GPIO6 SPI CLK IN 1 8V 9 GPIO7 SPI CS IN 1 8V 10 N C 11 N C 4 WAKEUP OUT 1 8V 5 Vcc 1 8V PWRIN ANT IN RF 12 ANT_GND 13 RX0 SPI DI I2C DIO 1 8V 22 N C 14 TM_GPIO5 OUT 1 8V 16 VANT IN 3 3 to 5VDC 15 TX0 SPI DO I2C CLK 1 8...

Страница 22: ...Antenna signal Z 50 Ohm antenna input must not exceed 30dB gain including cable loss 13 ANT_GND RF GND Antenna Ground 14 N C None Leave open 15 VANT Antenna Supply Voltage Input Power supply input for external active antenna provide ac cording voltage up to 5 0 VDC switched internally 16 TM_GPIO5 Output Time Mark 1PPS signal 17 I2C CLK Output I2C clock Output to MEMS interface 18 I2C DIO Input Out...

Страница 23: ...V2 0 Jan 13 User s Manual Page 23 of 41 Host port I2C_DIO Host port I2C data I O pin when module works in hist port I2C mode Table 6 Pin description A2100 B ...

Страница 24: ...8 A2100 B electrical characteristics 1 Peak searching current is characterized by millisecond bursts above average searching current 2 Average searching current is typically only the first two seconds of TTFF 3 Tracking current typically includes tracking and the post searching portion of TTFF 4 When TP TricklePower Mode is enabled the receiver maximises the navigation performance Under normal tra...

Страница 25: ...t Storage temperature 40 85 C Vant Antenna supply voltage 0 5 5 V Iant Antenna supply current 0 50 mA Table 9 Absolute maximum ratings Stresses beyond those listed under Absolute Maximum Ratings may cause per manent damage to the device This is a stress rating only Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specifi...

Страница 26: ... 0 8 V nRST for safe reset 0 2 V ON_OFF Vih 1 35 Vcc V Vil 0 3 0 45 V BOOTSEL Vih 1 35 2 2 V Table 10 DC electrical characteristic A2100 A Symbol Parameter Min Max Unit TX0 WAKEUP Voh 4mA 1 4 Vcc V Vol 4mA 0 4 V RX0 Vih 1 1 Vcc V Vil 0 8 V nRST for safe reset 0 2 V ON_OFF Vih 1 35 Vcc V Vil 0 3 0 45 V BOOTSEL Vih 1 35 2 2 V Table 11 DC electrical characteristic A2100 B ...

Страница 27: ... to use chemical tin as the counter part to the module s pins This will guarantee highest resistance against shocks 7 1 Proposed Footprint for Soldering Following soldering footprint parameters are recommended Copper and solder paste footprint are identical Pad shape size inner pads 1 5 mm x 1 5 mm Pad shape size outer pads 1 762 mm x 0 8 mm Stencil thickness of 120 150 µm Figure 12 Recommended So...

Страница 28: ... max preheat temperature 60 120 seconds Temperature maintained above 217 C 60 150 seconds Time within 5 C of actual peak temperature 30 seconds Ramp down rate 6 C second max Time 25 C to peak temperature 8 minutes max Table 12 Reflow soldering profile A2100 A B The solder pads hold solder of a thickness of about 150 µm for improved solder process results As results of soldering may vary among diff...

Страница 29: ...routed to the ground plane of the PCB the ground plane is on a lower PCB layer by vias as demonstrated in the drawing Figure 13 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 For the calculation it is assumed that...

Страница 30: ...V2 0 Jan 13 User s Manual Page 30 of 41 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 ...

Страница 31: ...nna specification Limitations Supply voltage voltage fed into VANT pin 5V max Supply current 50mA max Recommendations Gain 15dB should not exceed 30 dB including cable loss Noise figure 1 5dB The recommendations apply to the majority of active antennas that can be found in the market Anyhow the quality of the GPS antenna chosen is of paramount im portance for the overall sensitivity of the GPS sys...

Страница 32: ...oned according to EIA JEDEC standard JESD22 A113 B Level 3 Basic qualification tests MSL Classification according to J STD 020C MSL3 245 C MSL Rework Compatibility according to J STD 020C Temperature Cycling 40 C 85 C Temperature Humidity Bias 70 C 85 RH Low High Temperature Operating 40 C 85 C High Temperature Operating Life 85 C Vibration Variable Frequency Mechanical Shock Please contact Maestr...

Страница 33: ...According messages either in NMEA or OSP mode The shutdown is completed after maximum 1s Therefore the module should be supplied with voltage for that time after the shutdown sequence was initiated 10 3 SiRFawareTM Support SiRFawareTM is a low power operating mode that seeks to maintain low uncertainty in position time and frequency and to maintain valid current Ephemeris using either data collect...

Страница 34: ... up again toggling the ON_OFF pin is neces sary 200ms pulse width 10 6 Extended Ephemeris The receiver is capable of supporting two versions of using Extended Ephemeris EE data The first one is the version where the EE data are calculated on a server are transmitted to device incorporating the receiver and are then loaded into the receiver These data can be valid for up to seven days The second ve...

Страница 35: ...16mA 10 7 1 Antenna Sensor The following circuit is a proposal on how you can feed an antenna with 3 3V and provide an output for the ANTSTAT pin The value of the components may need an adaptation in the final application For example the input current of the chosen comparator goes into that equation The thresholds defined in this circuit are quite close to the ones described above Their value is d...

Страница 36: ...s 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 ap plication In any case it is the responsibility of the designer to test and verify the implementation Figure 16 Application note Antenna sensor adaptation with current limiter Current Limiter ...

Страница 37: ...e the current date and time is transmitted in NMEA sentences UTC an exact and accurate timing signal is pro vided via the 1PPS pin of the A2100 GPS receiver Under good signal conditions the 1PPS signal comes between 620ns and 710ns after the full GPS system second which is accurately around 10ns synchronized to UTC Therefore the 1 second clock can be derived and maintained within around 90ns under...

Страница 38: ... is the default Navigation Update Rate If the user want to change to 5Hz Navigation Update Rate Please refer to command below Enable 5Hz Navigation Update Rate command NMEA command MID103 PSRF103 00 6 00 0 23 OSP command MID136 A0 A2 00 0E 88 00 00 04 04 00 00 00 00 00 00 00 0F 02 00 A1 B0 B3 Disable 5Hz and return to 1Hz Navigation Update Rate command NMEA command MID103 PSRF103 00 7 00 0 22 OSP ...

Страница 39: ...interface is an extension of the serial port 0 therefore sending NMEA sentences or binary information and ac cepting commands At the same time it provides power to the module Accompanied by both an active and passive antenna it offers a ready to go set For the development of new software and applications the Evaluation Kit also provides NMEA and binary messages on CMOS level via a terminal plug Fi...

Страница 40: ...d Maestro Wireless Solutions Limited Add Unit 3603 09 36 F 118 Connaught Road West HK Main Line 852 28690688 Fax 852 25254701 support gps maestro wireless com www maestro wireless com 12 2 Related Documents GPS Firmware GSD4e Maestro GPS Evaluation Kit EVA2100 A B Maestro GSD4e NMEA Manual SiRF GSD4e OSP Manual SiRF Kionix KXSD9 SERIES http www kionix com accelerometers accelerometer KXSD9 html Ki...

Страница 41: ...ine A2100 A B 29 Figure 14 Strip line parameters A2100 A B 29 Figure 15 Application note Antenna sensor adaptation 35 Figure 16 Application note Antenna sensor adaptation with current limiter 36 Figure 17 1PPS waveform reference 38 Figure 18 Evaluation kit EVA2100 A B 39 14 List of Tables Table 1 A2100 A B GPS characteristics 9 Table 2 A2100 A B dimensions and weight 9 Table 3 Additional equipment...

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