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Maestro A2100-A User Manual

Summary of 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.

  • Page 2: Revision History

    V1.2 – may-11 user’s manual page 2 of 37 revision history rev. Date description 0.1 08-24-09 first draft, based on a1084 v1.1 0.2 01-25-10 rohs, pin-out, clean-up, … 0.3 01-29-10 nwakeup correction, new pictures, on_off correction, bootsel correction 0.4 02-11-10 minimum configuration updated (!), o...

  • Page 3: Disclaimer

    V1.2 – may-11 user’s manual page 3 of 37 disclaimer this document contains proprietary information of maestro 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...

  • Page 4: Table of Contents

    V1.2 – may-11 user’s manual page 4 of 37 table of contents 1 introduction ........................................................................................................ 6 1.1 feature overview.............................................................................................. 6 1....

  • Page 5

    V1.2 – may-11 user’s manual page 5 of 37 8.2.2 active antennas........................................................................................................ 28 9 quality and reliability...................................................................................... 29 9.1 environment...

  • Page 6: 1 Introduction

    V1.2 – may-11 user’s manual page 6 of 37 1 introduction the gps modules a2100-a and a2100-b are maestro’s first implementation of csr’s sirfstariv chip on gps modules. Both are highly integrated gps receivers that can be used as smt components. A very easy implementation (power, serial, on_off, and ...

  • Page 7

    V1.2 – may-11 user’s manual page 7 of 37 1.2 characteristics overview the module’s most important characteristics are: • a2100-a o operable at 3.3v / 19ma (typ.) @ 1 fix per second o uart interface at 3.3v cmos level o prepared for spi slave support at 3.3v cmos • a2100-b o operable at 1.8v / 30ma (...

  • Page 8

    V1.2 – may-11 user’s manual page 8 of 37 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 ...

  • Page 9

    V1.2 – may-11 user’s manual page 9 of 37 1.5 characteristics the modules are characterized by the following parameters. 1.5.1 gps characteristics channels 48, parallel tracking correlators ~ 400,000 frequency l1 (= 1,575 mhz) tracking sensitivity (1) -163 dbm horizontal position accuracy stand alone...

  • Page 10: 2 Ordering Information

    V1.2 – may-11 user’s manual page 10 of 37 2 ordering information 2.1 gps receivers a2100-a/b the order number is built as follows: • a2100-axxx • a2100-bxxx a2100-a for the a2100-a module and a2100-b for the a2100-b module. The “xxx” refers to the current firmware version on the module. If no firmwa...

  • Page 11

    V1.2 – may-11 user’s manual page 11 of 37 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(...

  • Page 12

    V1.2 – may-11 user’s manual page 12 of 37 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.

  • Page 13

    V1.2 – may-11 user’s manual page 13 of 37 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...

  • Page 14: 3 Quick Start

    V1.2 – may-11 user’s manual page 14 of 37 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). Note 1 : the a2100-a needs ...

  • Page 15

    V1.2 – may-11 user’s manual page 15 of 37 note : care must be taken to implement an orderly shut-down sequence along with supplying power for a certain period of time after initiating the shut-down sequence. Abrupt removal or drop of power while the module is running has risks ranging from minor imp...

  • Page 16

    V1.2 – may-11 user’s manual page 16 of 37 antenna input of the module) should not exceed 30 db. The noise figure should be ≤ 1.5db. 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, ...

  • Page 17: 4 Mechanical Outline

    V1.2 – may-11 user’s manual page 17 of 37 4 mechanical outline 4.1 details component side a2100-a / b 15.24 (0.6) 15 .2 4 ( 0.6) 15.24 (0.6) 15 .2 4 ( 0.6) all dimensions in [mm, (inch)] figure 7: mechanical outline component side a2100-a/b.

  • Page 18

    V1.2 – may-11 user’s manual page 18 of 37 4.2 details solder side a2100-a/b 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 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 (inn...

  • Page 19: 5 Pin-Out Information

    V1.2 – may-11 user’s manual page 19 of 37 5 pin-out information 5.1 layout a2100-a 12 13 14 15 16 17 18 19 20 21 22 11 10 9 8 7 6 5 4 3 2 1 gnd gnd gnd gnd gnd gnd gnd gnd gnd 1 nrst [in – 3.3v] 2 bootsel [in – 1.8v] 3 vcc 3.3v [pwrin] 6 gnd 7 gnd 8 gpio6 / spi clk [in – 3.3v] 9 gpio7 / spi cs [in –...

  • Page 20

    V1.2 – may-11 user’s manual page 20 of 37 5.2 description a2100-a signals pin symbol function description 1 nrst input reset input (open / high – no reset, low - reset) connect to open collector / open drain output! 2 bootsel input special boot mode – leave open for normal operation; high – boot loa...

  • Page 21

    V1.2 – may-11 user’s manual page 21 of 37 5.3 layout a2100-b 12 13 14 15 16 17 18 19 20 21 22 11 10 9 8 7 6 5 4 3 2 1 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 [o...

  • Page 22

    V1.2 – may-11 user’s manual page 22 of 37 5.4 description a2100-b signals pin symbol function description 1 nrst input reset input (open / high – no reset, low - reset) connect to open collector / open drain output! 2 bootsel input special boot mode – leave open for normal operation; high – boot loa...

  • Page 23: 6 Electrical Characteristics

    V1.2 – may-11 user’s manual page 23 of 37 6 electrical characteristics 6.1 operating conditions pin description min typical max v cc 3.0v 3.3v 3.6v peak acquisition current (1) 45ma average acquisition current (2) 35ma 3 tracking current (3) 24ma table 6: a2100-a electrical characteristics pin descr...

  • Page 24

    V1.2 – may-11 user’s manual page 24 of 37 6.3 dc electrical characteristics symbol parameter min max unit tx0, wakeup voh @ 4ma 2.6 vcc v vol @ 4ma 0.45 v rx0 vih 2.0 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 9: preliminary dc electr...

  • Page 25: 7 Mounting

    V1.2 – may-11 user’s manual page 25 of 37 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 h...

  • Page 26: 8 Use of Gps Antennas

    V1.2 – may-11 user’s manual page 26 of 37 8 use of gps antennas 8.1 connecting a gps antenna to the gps receiver the ant pin is used to connect a gps antenna to the receiver. The design of the antenna connection has to be done strictly according to rf design rules. A 50 Ω pcb strip line is required....

  • Page 27

    V1.2 – may-11 user’s manual page 27 of 37 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..

  • Page 28

    V1.2 – may-11 user’s manual page 28 of 37 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 b...

  • Page 29: 9 Quality and Reliability

    V1.2 – may-11 user’s manual page 29 of 37 9 quality and reliability 9.1 environmental conditions operating temperature -40 … +85 °c operating humidity max. 85% r. H., non-condensing, at 85 °c msl jedec (moisture sensitivity level) 3 storage 6 months in original package. Table 6: environmental condit...

  • Page 30: 10 Applications and Hints

    V1.2 – may-11 user’s manual page 30 of 37 10 applications and hints 10.1 initial module start after initially applying power to the module, it is necessary to start the internal firmware by toggling the on_off pin. Toggling is done by pulling the signal to high for about 100ms. This first toggling c...

  • Page 31

    V1.2 – may-11 user’s manual page 31 of 37 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 s...

  • Page 32

    V1.2 – may-11 user’s manual page 32 of 37 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....

  • Page 33

    V1.2 – may-11 user’s manual page 33 of 37 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 im...

  • Page 34

    V1.2 – may-11 user’s manual page 34 of 37 10.8 vant pin the vant pin is an input pin. The supply voltage for an active gps antenna on the ant input has to be fed into the 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...

  • Page 35: 11 Evaluation Kit Eva2100-A

    V1.2 – may-11 user’s manual page 35 of 37 11 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 ex...

  • Page 36: 12 Related Information

    V1.2 – may-11 user’s manual page 36 of 37 12 related information 12.1 contact 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, hongko...

  • Page 37

    V1.2 – may-11 user’s manual page 37 of 37 13 list of figures figure 1: a2100-a label ........................................................................................... 8 figure 2: a2100-a/b tape specifications (1)........................................................... 10 figure 3: a2100...