RoyalTek RET-3570LP Bedienungsanleitung

RoyalTek Confidential

RET-3570LP User Manual

Version 1.1

2007/07/09

This document contains information highly confidential to RoyalTek Company LTD

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

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.

8F, 256 Yang Guang Street, Neihu Chiu,Taipei, Taiwan

TEL: 886-2-77215000

FAX: 886-2-77215666

http://www.royaltek.com/contact

RoyalTek Confidential

RET-3570LP User Manual

Content

1. INTRODUCTION................................................................................................................ 1

1.1 PRODUCT FEATURES ......................................................................................................... 1

1.2 PRODUCT APPLICATIONS ................................................................................................... 1

1.3 PRODUCT PICTURES AND INTERFACE BOARD .................................................................... 2

1.4 SYSTEM BLOCK DIAGRAM ................................................................................................ 4

1.5 TECHNICAL SPECIFICATION ............................................................................................... 5

1.6 APPLICATION CIRCUIT....................................................................................................... 6

1.7 RECOMMENDED LAYOUT PAD.......................................................................................... 8

1.8 MECHANICAL LAYOUT...................................................................................................... 9

1.9 TEST SOFTWARE SPECIFICATION........................................................................................ 9

1.10 HARDWARE INTERFACE................................................................................................. 10

2. SOFTWARE INTERFACE ............................................................................................... 14

3. GPS RECEIVER USER’S TIP ......................................................................................... 18

4. PACKAGE SPECIFICATION AND ORDER INFORMATION .................................. 19

5. CONTACT ROYALTEK ................................................................................................... 19

6. REVISION HISTORY....................................................................................................... 19

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RET-3570LP User Manual

1. Introduction

RoyalTek RET-3570LP small form factor board is the newest generation of RoyalTek

GPS plus TMC module. TMC can deliver real-time traffic and travel information to

drivers. The driver can be notified of problems on the planned route, at the same time,

TMC calculates and provide an alternative route to help driver avoid the incident. The

combo module is powered by latest SiRF Star III single chip and RoyalTek

proprietary navigation technology that provides you with stable and accurate

navigation data. The smallest form factor and miniature design is the best choice to be

embedded in a device such as portable navigation device, personal locator, and speed

camera detector and vehicle locator.

1.1 Product Features

 20 parallel channels

 TMC embedded

 TMC frequency 87.5MHz--108MHz

 SMT type with stamp holes

 TCXO design

 0.1 second reacquisition time

 Small form factor with embedded SiRF Star III single chip technology.

 NMEA-0183 compliant protocol/ Royaltek TMC protocol

 Enhanced algorithm for navigation stability

 Excellent sensitivity for urban canyon and foliage environments.

 DGPS (WAAS, EGNOS ) support

 Auto recovery while RTC crashes

1.2 Product Applications

 Automotive navigation

 Personal positioning and navigation

 Marine navigation

 Timing application

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RET-3570LP User Manual

1.3 Product Pictures and Interface board

(1) RET-3570LP

(2) RET-3570LP Interface board

The interface board pin definition

J2 CONNECTOR

Pin # Signal Name I/O Description Characteristics

1 N.C

2 N.C

3 Battery I

Backup voltage supply

10uACurrent

3.6V

2.5DC

≤

4 VCC I DC Supply Voltage input DC +3.3V±10%

5 Reset I Reset (Active low) 8.0;2.3VVIH VVIL

6-10 N.C

11 TXA O Serial port A VVVVV OLOH 715.085.2375.2 ≤

≤

CMOS TTL level

12 RXA I Serial port A VVVVV ILIH 855.00.3V-15.3995.1

≤

CMOS TTL Level

13 N.C

14 TXB O Serial port B VVVVV OLOH 715.085.2375.2 ≤

≤

CMOS TTL level

Pin 1

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RET-3570LP User Manual

15 RXB I Serial port B VVVVV ILIH 855.00.3V-15.3995.1 ≤≤

≤

CMOS TTL Level

16 N.C

17 Boot I Boot mode VVVVV ILIH 855.00.3V-15.3995.1 ≤≤

≤

18 GND G Ground

19 N.C

20 N.C

Switch U4

Pin # Signal Name 0/1 Description Characteristics

1 GPIO-0 GPIO input/output Switch:

0: Low 1:High CMOS TTL Level

2 GPIO-4 GPIO input/output Switch:

0: Low 1:High CMOS TTL Level

3 GPIO-15

(N.C for

RET-3570)

GPIO input/output

(N.C for RET-3570)

Switch:

0: Low 1:High CMOS TTL Level

(N.C for RET-3570)

4 PPS PPS output Switch:

0: Low 1:PPS output

5 GPS_3V3 Power supply for

GPS section

Switch:

0: Low 1: DC 3.3V output

6 TMC_3V3 Power supply for

TMC section

Switch:

0: Low 1: DC 3.3V output

7 N.C

8 RF_Bias RF_Bias voltage

switch

0: open. No voltage provide antenna.

1:Provide 2.85V to antenna.

Connector:

Pin # Description Characteristics

J1 GPS RF Connector 1575.42MHz

J5 FM RF Connector 87.5MHz~108MHz

J4 Stereo Jack Audio output

(Right and Left channel)

RoyalTek Evaluation Kit REV-2000 for RET-3570 LP

(Please refer to RoyalTek Evaluation Kit REV-2000 for RET-3570 Operational Manual for more

information.)

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RET-3570LP User Manual

1.4 System Block Diagram

System block diagram description:

(1) External antenna.

(2) 4 Mega bits flash memory

(3) 31 pin I/O pin

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RET-3570LP User Manual

1.5 Technical Specification

Impedance：50Ω

No Function Specification

GPS receiver

1 Chipset SiRF Star III, GSC3f/LP

(Digital, RF in a single package)

2 Frequency L1 1575.42MHz.

3 Code C.A. Code.

4 Channels 20 parallel

5 Chipset Sensitivity -159dBm.

6 Chipset Cold start @open sky 35 sec

7 Chipset Warm start @open

sky

35 sec

8 Chipset Hot start @open sky 1 sec

9 Reacquisition 0.1sec typical

10 Position accuracy 10meters at 2D RMS.

11 Maximum altitude 18000 m

12 Maximum velocity 514 m/s

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

14 Update rate Continuous operation: 1Hz

15 Testability It shall be able to be tested by SiRF test IV and single channel

simulator.

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

17 DGPS WAAS, EGNOS

Interface

18 LNA No LNA

19 I/O Pin 31pin

TMC/RDS receiver

20 Frequency 87.5~108MHz. US/Europe

21 RDS sensitivity 24.7uV typical

Δf=22.5kHz, fAF = 1kHz,L=R, f　RDS=1.2kHz,

De-emphasis= 50us,

Block Quality Rate ≧85%

22 Right and Left audio output

voltage

Conditions:

mVVRF 1

;

;KHzf 5.22

∆

;KHzf 1

mod =; No

pre-emphasis; usTCdeem 75

Output voltage:

Min= 55 mV

Typ=66 mV

Max=75mV

Mechanical requirements

23 Weight ≦3.5g

Power consumption

24 Vcc DC 3.3 ±5%

25 Current

GPS:

Fix mode Current 36mA average.

RDS Current: 15mA typical

Environment

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RET-3570LP User Manual

26 Operating temperature -40 ~ 85℃

27 Humidity ≦95%

1.6 Application Circuit

Reference:

Note:

(1) Ground Planes:

RET3570LP GPS receiver needs two different ground planes.

These pins(13、15、16、18) should be connected to analog ground.

These pins(2、10、30) should be connected to digital ground.

(2) Serial Interface:

(I)The TXA pin is recommended to pull up (10KΩ). It can increase the stability of

serial data.

(II) The TXB pin is recommended to connect to serial resistance(220Ω) and pull

up (10KΩ), if use the DGPS output.

If the DGPS output is not used, it won’t connect anything.

(III) The RXB pin is recommended to connect to serial resistance(220Ω), if the DGPS

output is used.

If the DGPS output is not used, it won’t connect anything.

(3) Backup Battery:

It’s recommended to connect a backup battery to V_RTC_3V3 in order to enable the warm

start and hot start features of the GPS receiver. If you don’t intend to use a backup battery,

connect this pin to GND or float it.

If you use a backup battery, you should add a bypassing capacitor (10uF) at V_RTC_3V3

pin to reduce noise and increase the stability.

(4) GPS_RF_IN:

Connecting to the antenna has to be routed on the PCB. The transmission line must control

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RET-3570LP User Manual

impedance to connect RF_IN to the antenna or any antenna connectors that you prefer.

(Impedance 50Ω)

(5) FM_RF_IN:

Connecting to the antenna has to be routed on the PCB. The transmission line must control

impedance to connect FM_RF_IN to the antenna or any antenna connectors that you prefer.

(Impedance 50Ω)

(6) Power:

Connect V_GPS_3V3 and V_TMC_3V3 pin to DC 3.3V. The power supply must add a

bypassing capacitor (10uF and 1uF) to reduce the noise from power supply and increase

power stability.

(7) Active antenna bias voltage:

The Vcc_RF_OUT pin (pin 20) provides voltage 2.85V. If you use an active antenna, you

can connect this pin to V_ANT_IN pin (pin 19) for providing bias voltage of an active

antenna. The bias voltage will run through GPS_RF_IN pin to provide active antenna bias

voltage from Vcc_RF_OUT pin.

If your bias voltage of an active antenna isn’t 2.85V, you can input bias voltage that you

need to V_ANT_IN pin (pin 19). The input bias voltage will run through GPS_RF_IN pin

to provide active antenna bias voltage from V_ANT_IN pin.

PS:

(Ⅰ). The maximum power consumption of active antenna is around 85mW.

(Ⅱ). The input gain ranges from 12 to 26dB.

(8) GPIO:

The GPIO pin is recommended to connect to serial resistance(220Ω), if the GPIO function

is used.

If GPIO function is not used, it won’t connect anything.

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RET-3570LP User Manual

1.7 Recommended layout PAD

Top View

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