RoyalTek RGM-3550LP Manuale utente

RGM-3550LP User Manual

Version 1.3

2008/11/19

This document contains information highly confidential to RoyalTek Company

LTD (RoyalTek). It is provided for the sole purpose of the business discussions

between supplier and RoyalTek and is covered under the terms of the

applicable Non-Disclosure Agreements. Disclosure of this information to other

parties is prohibited without the written consent of RoyalTek.

Prepared by RoyalTek Company LTD.

4F, No.188 Wen Hwa 2nd Rd., Kuei Shan,

Tao Yuan 33383, Taiwan

TEL: 886-3-3960001

FAX: 886-3-3280976

http://www.royaltek.com/contact

RGM-3550LP User Manual

0. Revision History

Rev Release Date Change Description Editor

1.0 2007/3/26 Initial Draft Amanda Lee

1.1 2007/4/30 Current--

Acquisition: 50mA (typical) Tracking: 45mA

(typical)

Amanda Lee

1.2 2007/5/14 Chipset Sensitivity: -159dBm (tracking)

Cold start: 35 sec@ open sky

Warm start: 35 sec@ open sky

Hot start:1 sec @ open sky

Amanda Lee

1.3 2008.11.19 Add 25x25x2mm patch antenna

drawing

Amy Liu

RGM-3550LP User Manual

Content

1. Introduction...............................................................................................4

2. RGM-3550LP Picture and Pin Definition...................................................5

3. RGM-3550LP System Block Diagram.......................................................6

4. RGM-3550LP Technique Specification......................................................7

5. Mechanical Layout..................................................................................10

6. How to Assemble/Fix RGM-3550LP .......................................................11

7. Software Specification and NMEA Protocol ............................................12

8. Package Specification and Order Information.........................................18

RGM-3550LP User Manual

RoyalTek GPS Module: RGM-3550LP Operational Manual

1. Introduction

RoyalTek RGM-3550LP smart antenna GPS module (patch antenna embedded and

external antenna supported) is inherited from RGM-3550, but lower power

consumption than RGM-3550. The smart antenna GPS module is powered by SiRF

Star III technology and RoyalTek proprietary navigation algorithm that providing you

more stable navigation data.

The 6-pin connector design is the easiest and convenient solution to be embedded in

a portable device and receiver like PND, GPS mouse, car holder, personal locator,

speed camera detector and vehicle locator. The excellent sensitivity of RGM-3550LP

gets the great performance when going though the urban canyon and foliage.

Product Features

20 parallel channels.

-159 dBm high GPS sensitivity.

Excellent sensitive for urban canyon and foliage environments.

Operable from 3.3V, average tracking current is [email protected] and average

Acquisition current is 50mA.

6 pin Wire-to-Board (WTB) connector type.

GPS status light output.

TCXO design.

0.1 second reacquisition time.

Dimension is 35±0.3(L)x 31±0.3(W)x 8.55/6.55±0.5(H) mm.

Weight ≦16.5g.

NMEA-0183 compliant protocol/custom protocol.

Enhanced algorithm for navigation stability

SBAS (WAAS, EGNOS and MSAS) support and the default SBAS is enable

Lead-Free

Backup battery (installed)

Product Applications

Personal Navigation Device including GPS PDA and GPS Handheld

GPS receiver including GPS mouse and Bluetooth GPS receiver

Personal positioning and navigation

Marine navigation

Timing application

RGM-3550LP User Manual

2. RGM-3550LP Picture and Pin Definition

Pin 1

Pin 6

31 ±0.3 mm 35 ±0.3mm

RGM-3550LP User Manual

3. RGM-3550LP System Block Diagram

System block diagram description:

Patch antenna with 1 Stage LNA

4Mega bits flash memory on chip

MMCX External Antenna Supported

6 pin I/O pin (see page 7, Interface pin definition)

6 Pin I/O

LNA

SIRF GSC3F

with 4M Flash

RF frontend +Base-

and

Processor

TCXO XTAL

GPS Patch Antenna

External Antenna

MMCX Switch

Connector SAW

RGM-3550LP User Manual

4. RGM-3550LP Technique Specification

No Function Specification

GPS receiver

1 Chipset SiRF GSC3F/LP single chipset

2 Frequency L1 1575.42MHz.

3 Code C.A. Code.

4 Channels 20.

5 Chipset Sensitivity -159dBm (tracking)

6 Cold start 35 sec@ open sky

7 Warm start 35 sec@ open sky

8 Hot start 1 sec @ open sky

9 Reacquisition 0.1sec typical

9 Position accuracy 10meters at 2D RMS.

10 Maximum altitude 18000 m

11 Maximum velocity 514 m/s

12 Trickle power mode Duty cycle ≦34%. (Variable)

13 Update rate Continuous operation: 1Hz

14 Testability It shall be able to be tested by SiRF test mode IV and

single channel simulator.

15 Protocol setup It shall store the protocol setup in the SRAM memory.

Interface

16 I/O Pin 6 pin (see page 7 about pin definition)

Mechanical requirements

17 Dimension 35±0.3(L)x 31±0.3(W)x 8.55±0.5(H) mm

18 Weight ≦16.5g

Power consumption

19 Vcc DC 3.3 ±5%

20 Current Acquisition: 50mA (typical) Tracking: 45mA (typical)

21 Trickle power mode Average current 37mA. (300ms on /700ms off)

22 SRAM backup battery 3.3mAhr Li-Ion rechargeable battery. Battery life at full

charge is ≥7 days.

Environment

23 Operating temperature -40 ~ +85℃(except for SRAM battery backup -20

to +60 degree Celsius)

RGM-3550LP User Manual

24 Storage temperature -40 ~ +85℃(except for SRAM battery backup -40

to +60 degree Celsius)

25 Humidity ≦95%

26 Lead Free Yes

External Antenna RF Input

27 Drive Output Voltage 2.85V ± 0.5%

28 Drive Output Current 30mA (max)

29 Connector Type MMCX

Interface Pin definition (VDD=2.85V±2%)

Pin # Signal Name I/O Description Characteristics

1 RX I Serial port A VDDVVDDV ILIH *3.0*7.0 ≤≥

2 TXA O Serial port A VDDVVDDV OLOH 25.0*75.0 ≤≥

3 GND G Ground Reference Ground

4 VCC I DC Supply

Voltage input DC +3.3V±5%

5 GPS Status O GPS Status VDDVVDDV OLOH 25.0*75.0 ≤≥

6 Boot select I Boot mode VDDVVDDV ILIH *3.0*7.0 ≤≥

EXT

Ant

RFIN

External

Antenna

RF Input RF IN External

Antenna RF

Input

%5.085.2

VVOUT

)(30 MaxmAIOut

VCC (+3.3V DC power Input)

this is the main DC power supply input pin. It provides voltage to module.

GND

Reference Ground Plane of RGM-3550.

Boot select

set this pin to high for programming flash.

1. 2. 3 . 4. 5. 6

EXT Ant

RF IN

RGM-3550LP User Manual

RX

This is the main receiver channel and is used to receive software commands to

the board from SIRFdemo software or from user written software.

PS: Pull up if not used.

TX

This is the main transmitting channel and is used to output navigation and

measurement data to SiRFdemo or user written software.

GPS Status

GPS Status Pin can be connected to a LED to indicate the status of GPS signal

1. Solid: Power ON/ Tracking for Satellite

2. Blinking: 3D Fix Found

GPS status light indicating

Power off LED off VoL:0.71(Max)

Power on/search for satellite, voltage is high LED solid VoH: 2.13V(min)

3D fix found, voltage is high/low, remain 1

second each LED blinking VoH: 2.13V(min) &

VoL:0.71(Max)

External Antenna RF Input

This is the MMCX RF Connector for External Active Antenna signal input

External Active Antenna Spec. Suggestion

1. Drive Output Voltage: %5.085.2

VVOUT

2. Drive Output Current: )(30 MaxmAIOut

3. LNA Gain: 20~26dB

4. LNA Noise Figure: <1.5dB

How to use RGM-3550LP in 5V main board

The power supply of RGM-3550LP is 3V. If customer would like use RGM-3550LP in

5V system, RoyalTek suggest customer use linear regulator (from 5V to 3.3V) on

customer main board. We could help check the circuit if providing regulator

specification.

RGM-3550LP User Manual

5. Mechanical Layout

25x25x4mm patch antenna

25x25x2mm patch antenna

Indice

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