RoyalTek REB-1722 Series Kurzanleitung

REB-1722 Operational Manual

Version 0.2

2009/09/02

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.

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

Tao Yuan 333, Taiwan

TEL: 886-3-3960001

FAX: 886-3-3960065

http://www.royaltek.com/contact

RoyalTek Confidential 2

REB-1722 Operational Manual

Content

1. Introduction...................................................................................................2

2. Software Interface.......................................................................................15

3. GPS Receiver User’s Tip ............................................................................21

4. Package Specification and Order Information ...........................................22

5. Contact Royaltek ........................................................................................23

6. Revision History .........................................................................................23

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REB-1722 Operational Manual

1. Introduction

RoyalTek REB-1722 is powered by latest SiRF Star III low power single chip. It uses the proprietary

navigation technology to provide you with stable and accurate navigation data. The high sensitivity,

ultra low power consumption and miniature design is the best choice to be embedded in a device such

as portable navigation device, personal locator, Speed Camera detector and vehicle locator.

Product Features

20 parallel channels

SMT type with stamp holes

Ultra low power consumption

TCXO design

0.1 second reacquisition time

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

NMEA-0183 compliant protocol/ customize protocol

Enhanced algorithm for navigation stability

Excellent sensitivity for urban canyon and foliage environments.

DGPS (WAAS, EGNOS) support

Build-in LNA and saw filter

1.1 Product Applications

Automotive navigation

Personal positioning and navigation

Marine navigation

Timing application

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REB-1722 Operational Manual

1.2 Product Pictures

(1) REB-1722

(2) REB-1722 Interface board

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REB-1722 Operational Manual

1.3 REB-1722 Series Block Diagram

System block diagram description:

a. External antenna.

b. 4 Mega bits flash memory.

c. 28 pin I/O pin.

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REB-1722 Operational Manual

1.4 REB-1722 Technical Specification

Impedance：50Ω

No Function Specification

GPS receiver

1 Chipset SiRF Star III, GSC3f/LPx

(Digital, RF in a single package)

2 Frequency L1 1575.42MHz.

3 Code C.A. Code.

4 Channels 20 parallel

5 Chip Sensitivity Tracking: -159dBm.

6 Chip Cold start 35 sec @ open sky (Typical)

7 Chip Warm start 35 sec @ open sky (Typical)

8 Chip Hot start 1 sec @ open sky (Typical)

9 Reacquisition 0.1sec typical

10 Position accuracy 10meters at 2D RMS.

11 Maximum altitude 18000 m

12 Maximum velocity 515 m/s

13 Update rate Continuous operation: 1Hz

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

15 DGPS 1.WAAS, EGNOS

2.RTCM protocol

Interface

16 LNA 18dB Gain. (Typical)

17 I/O Pin 28pins

Mechanical requirements

18 Weight ≦3.5g

Power consumption

19 VCC DC +3.0~3.6V

20 V_BCKP DC +1.4~3.6V

21 Current Avg. ≦[email protected](without ext. antenna)

Environment

22 Temperature - Operating : -40 ~ 85℃

- Storage : -40 ~ 85℃

23 Humidity ≦95%

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REB-1722 Operational Manual

1.5 Application Circuit

Reference schematic:

For example:

P.S. If active antenna short

=>Current >100mA , so U3 PIN3 OUT

open . So AADET0_N status is

high.

V_ANT_3V3

AADET0_N

0.1uF

Active antenna status

VCC_3V3

Active antenna status

HIGH

VCC_3V3

V_ANT

Option 2

V_ANT

Micro

Active antenna select

2.7V~3.3 or 5V

VANT_3V3 or 5V

MAXIM / MAX4914BELT+T

/ uDFN

3.3K

V_ANT_3V3

Active Antenna open detect

circuit

RESET

33uF

4.3K

R3 4.7 ohm

AADET0_N

STATUS

33uF/6.3V

3.3K

100K

AADET0_N

V_ANT R5

3.3K

Processor

Active

VCC_3V3

ZXCT1009

1Vsense+

Vsense-

Iout

Active antenna

select 3.3V

V_ANT

0.01uF

MAXIM MAX4914BELT+T

OUT

N.C.

nFLAG

GND

C10

0.1uF

100K

Active antenna without

, or SHORT

Active antenna no

exist, or OPEN

LOW

V_ANT

R7 10K

Antenna

V_ANT_3V3

Active antenna

select 3.3 or 5V

3.3K

(Serial)

HIGH

2SC2412K

VCC_RF V_BACKUP

0.1uF

AADET0_N

STATUS

0.01uF

VC_RF

V_ANT_3V3

Active antenna short

detect circuit

NOHM

2SC2412K

SC-59

0.01uF

V_ANT_3V3

0.1uF

NOHM

2SC2412K

SC-59

V_ANT_3V3

2SC2412K

Active antenna Normal

suggest circcuit

AADET0_N

REB-1722

1415

28 SDA2

SCL2

TxD1

RxD1

VCC

GND

VCC_OUT

CFG_COM1

RESET_N

V_BCKP

BOOT

GND

GNDGND

RF_IN

GND

VCC_RF

V_ANT

AADET0_N

EXTINT0

TIMEMARK

ZETEX

ZXCT1009

SOT23

(Optional)

LOW

Option 1

50 ohm trace

1uF

R4 10K

Note:

(1) Ground Planes:

These pins (7,13, 14, 15, 17) should be connected to ground.

(2) Serial Interface:

(Ⅰ) The TxD1 pin is the serial output data (Default NMEA) .

(II) The RxD1 pin is the serial input data (Default NMEA) .

(3) Backup Battery:

When module is working, must to supply VCC (P6) and V_BCKP (P11) power at

the same time.

It’s recommended to connect a backup battery to V_BCKP pin and to enable the

warm start and hot start features of the GPS receiver.

If you use backup battery, should be adding a bypassing capacitor (0.01~10uF) at

V_BCKP pin. It can reduce noise and increase the stability.

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REB-1722 Operational Manual

(4) RF_IN:

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

to controlled impedance to connect RF_IN to the antenna or antenna connector of

your choice. (Impedance 50Ω)

(5) Power:

Connect VCC pin to DC+3.0~3.6V. The power supply must add bypassing capacitor

(10uF and 0.1uF).It can reduce the Noise from power supply and increase power

stability.

(6) Active antenna bias voltage:

The VCC_RF pin (pin 18) is provided voltage 2.85V. If you use active antenna, you

can connect this pin to V_ANT pin (pin 19) to provide bias voltage of active

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

bias voltage from VCC_RF pin.

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

V_ANT pin (pin 19) and input bias voltage of you need. The input bias voltage will

through GPS_RF_IN pin to provide active antenna bias voltage from V_ANT pin.

PS:

(1) The maximum power consumption of active antenna is about 85mW.

(2) The input gain ranges are 19~ 27dB.

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REB-1722 Operational Manual

Recommend Layout PAD:

TOP View

Parameter Specification

A 22.4 +0.6/-0.1mm

B 17.0 ±0.1mm

C 3.0 ±0.2mm

D 2.55 +0.3/-0.1mm

E 1.1 ±0.1mm

F 3.80 ±0.1mm

G 1.10 ±0.1mm

H 2.85 +0.3/-.01mm

RoyalTek Confidential 9

REB-1722 Operational Manual

Footprint and paste mask

TOP View

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