Maestro A2200-A Bedienungsanleitung PDF herunterladen (Seite 6)

V1.0 – Aug-13

User’s Manual

Page 6 of 37

1 Introduction

A2235-H is an antenna module with SiRF Star IV ROM based chip and an on-board

patch antenna (15mm x 15mm x 4mm). It is cost down version of A2035-H with re-

duced size and stacked up antenna architecture. RF switch was implemented (but

NOT on engineering samples) so as to support external active antenna for perfor-

mance enhancement if required. In order to have an easier migration for existing

customers using A2035-H, we decided to keep same pin assignment as that of

A2035-H. Additional pins for supporting external antenna won’t affect this drop-in

replacement property. Since there is an RF feed point underneath the module, spe-

cial PCB design is required on user’s application. Receiver part of A2235-H is fully

identical to A2200-A with latest CSR Premier ROM 9333 and enabling I2C host port,

Host Port I2C_CLK (Pin 14) was added for this new function.

The A2235-H is a module designed for a 3.3V environment.

1.1 Feature Overview

The A2235-H is a new module with the following outstanding features.

 Fast, responsive location experience

o High-sensitive navigation engine with tracking down to -163dBm

o 48 track verification channels

o SBAS (WAAS, EGNOS, MSAS, GAGAN)

 Breakthrough micro power technology

o Requires only 50 – 500µA to maintain hot start capability

 Active jammer remover

o Removes in-band jammers up to 80dB/Hz

o Tracks up to eight CW (continuous wave) jammers

 Size: 17.8mm (L) x 16.5mm (W) x 6.7mm (H)

 Operating voltage: 3V3

 No internal EEPROM but support external EEPROM through I2C interface

 Extremely low power consumption by using DC/DC converter

 No back-up battery required

 MEMS supports

 TCXO is used for providing stable 16.369MHz system clock

 CSR Premier ROM 9333 is used which is equivalent to Release 2.2 (i.e. F/W

4.1.2)

 Support external active antenna

 Build-in LNA with close to 20dB gain

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Maestro A2200-A Bedienungsanleitung Seite 6