RoyalTek

MEB-1000 User Manual


Version 1.0

2007/05/25

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

文件編號：


Index

1 Introduction.......................................................................................................... 1

1.5

1.6

1.7

1.8

1.1

1.2

1.3

1.4

Product Features...................................................................................1

Product Applications..............................................................................1

Product Pictures....................................................................................2

The interface Board Pin Definition.........................................................2

RoyalTek Evaluation Kit MEV-1000 for MEB-1000................................4

MEB-1000 System Block Diagram ........................................................5

MEB-1000 Technical Specification ........................................................5

Application Circuit .................................................................................7

1.9 Recommended Layout PAD ..................................................................9

1.10 Mechanical Layout ..............................................................................10

1.11 Hardware Interface..............................................................................10

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

2.1 NMEA V3.1 Protocol ...........................................................................15

3 RoHS Reflow Diagram ...................................................................................... 19

4 Package Specification and Order Information ................................................... 20

5 Contact Information ........................................................................................... 21

6 Revision History ................................................................................................ 21


Table Index

Table 1-1 J2 Connector .......................................................................................2

Table 1-2 Switch U4 ............................................................................................3

Table 1-3 Connector: ...........................................................................................4

Table 1-4 Pin Definition......................................................................................11

Table 2-1 NMEA-0183 Output Messages ..........................................................15

Table 2-2 GGA Data Format ..............................................................................15

Table 2-3 Position Fix Indicators........................................................................16

Table 2-4 GSA Data Format ..............................................................................16

Table 2-5 Mode 1...............................................................................................16

Table 2-6 Mode 2...............................................................................................17




Figure Index

Figure 1 MEB-1000 Picture .................................................................................2

Figure 2 MEB-1000 Interface Board....................................................................2

Figure 3 Block Diagram .......................................................................................5

Figure 4 Application Circuit..................................................................................7

Figure 5 Recommended Layout Pad...................................................................9

Figure 6 Mechanical Layout ..............................................................................10

Figure 7 Interface Pin Number ..........................................................................11

Figure 8 RoHS Reflow Diagram ........................................................................19

Figure 9 Tape & Reel Packaging Information ....................................................20


1 Introduction

RoyalTek MEB-1000 small form factor board is the newest generation of RoyalTek GPS module. The module is powered by MediaTek MT3301 and MT3179. 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, speed camera detector and vehicle locator.

1.1 Product Features

32 parallel channels

SMT type with stamp holes

High quality stereo audio output

TCXO design

0.1 second reacquisition time

NMEA-0183 compliant protocol/ customize 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

1

1.3 Product Pictures

(1) MEB-1000 pin1


1

2

3

Figure 1 MEB-1000 Picture

(2) MEB-1000 Interface board

SMARF

connector (J1)

J2 CONNECTOR

Pin 2

Pin 1

U4

Pin 19

Pin 20

Figure 2 MEB-1000 Interface Board

1.4 The interface Board Pin Definition

Table 1-1 J2 Connector

Pin # Signal Name I/O Description Characteristics

Pin 1

Pin 2

Pin 3

Pin 4

Pin 5

ANTPWR

VBAT

I

I

DC Supply Voltage Output 3.3V±5%

NC

DC + 1.6

~ + 3.6V

RTC Backup Battery

Supply

2


3

4

5

6

7

8

15

16

17

18

11

12

13

14

19

20

4

5

6

7

8

9

10

VCC

Reset

NC

NC

NC

NC

NC

TX0

RX0

TX1

O

I

Serial Port 0

Serial Port 0

NC

RX1 I Serial Port 1

NC

NC

Time Mark

I

I

O

O

DC Supply Voltage Output 3.3V±5%

External Reset Signal

Serial Port 1

One pulse per second

Table 1-2 Switch U4

Pin # Signal Name 0/1 Description

1

Characteristics

GPIO-0 GPIO Switch:

0:Low 1:High CMOS

2

TTL Level

GPIO-4 GPIO Switch:

0:Low 1:High CMOS

TTL Level

N.C

N.C

GPS_3V3 Power supply for GPS section Switch:

N.C

N.C

RF_Bias RF_Bias voltage switch

0:Low 1: DC 3.3V output

0: open. No voltage provide antenna.

1:Provide 2.85V to

3

MEB-1000 User Manual antenna.

Pin # Description

J1 GPS RF Connector

Table 1-3 Connector:

Characteristics

1575.42MHz

1.5 RoyalTek Evaluation Kit MEV-1000 for MEB-1000

( Please refer to RoyalTek Evaluation Kit MEV-1000 for MEB-1000 Operational Manual for more information)

4


1.6 MEB-1000 System Block Diagram

System block diagram description:

(1) External antenna.

(2) 4 Mega bits flash memory

(3) 31 pin I/O pin

Antenna

Figure 3 Block Diagram

1.7 MEB-1000 Technical Specification

Impedance：50Ω

No Function

GPS receiver

1 Chipset

Specification

MediaTek MT3179 (RF )& MT3301 (Digital)

2 Frequency L1

3 Code C.A.

4 Channels 32

5 Sensitivity (Acquisition)

6 Cold start

7 Warm start

8 Hot start

-130dBm.

36 sec (open sky)

35 sec (open sky)

1 sec (open sky)

5


9 Reacquisition <

10 Position accuracy 3 meters 2D RMS(w/o aid)

11 Maximum altitude

12 Maximum velocity

13 Trickle power mode

14 Update rate

18000 m

515 m/s

N/A

1Hz

15 Testability N/A

16 Protocol setup It can store the protocol setup in the SRAM and Flash memory.

2.RTCM protocol

Interface

19 I/O Pin

Mechanical requirements

20 Weight

Power consumption

21 Vcc

22 Current

31pin

≦ 3.5g

DC 3.3 ±5%

GPS :

< [email protected] (ACQ w/o ext. Antenna)

< [email protected] (Tracking w/o ext. Antenna)

Environment

23 Operating temperature

24 Storage temperature

-30 ~ 85℃

-40 ~ 85℃

6

1.8 Application Circuit


Figure 4 Application Circuit

Note:

(1) Serial Interface:

(Ⅰ)The TXA & RXA pin is recommended to connect to serial resistance(220

Ω ) and pull up (10KΩ). It can increase the stability of serial data.

(Ⅱ)The TXB & RXB pin is recommended to connect to serial resistance(220

Ω ) and pull up (10KΩ), if use the DGPS output.

If no use DGPS output, it don’t connect anything.

(2) 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 open.

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

V_RTC_3V3 pin. It can reduce noise and increase the stability.

(3) GPS_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)

(4) Power:

Connect V_GPS_3V3 pin to DC 3.3V. The power supply must add bypassing

7

MEB-1000 User Manual capacitor(10uF and 1uF).It can reduce the Noise from power supply and increase power stability.

(5) Active antenna bias voltage:

The Vcc_RF_OUT pin(pin 20) is provide voltage 2.85V. If you use active antenna, you can connect this pin to V_ANT_IN 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_OUT pin.

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

PS:

(1) The maximum power consumption of active antenna is about 100mW.

(2) Suggest input gain > 20dB，and NF < 1.5 dB 。

(6) GPIO:

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

If no use GPIO function, it don’t connect anything.

8


1.9 Recommended Layout PAD

TOP View

Figure 5 Recommended Layout Pad

9

1.10 Mechanical Layout


P17 P16

P31 P1

Figure 6 Mechanical Layout

1.11 Hardware Interface

Interface Pin Number:

Unit：mm

10


Figure 7 Interface Pin Number

Table 1-4 Pin Definition

Pin # Signal Name I/O Description Characteristics

DC +3.3V

±5%

Voltage input

2 GND

3 N.C

4 RXA

5 TXA

6

7

TXB

RXB

8 N.C

9 RF_ON

10 GND

11 N.C

12 N.C

13 GND

G Ground

G Ground

Serial A 3 .

6 V

Serial A 3 .

15 V

≥

≥

V

IH

V

OH

≥

O Serial port B 3 .

15 V ≥ V

OH

2 V -

≥

≥

2

2 .

.

4

4

V

V -

-

0.3V

0.3V

0.3V

≤

≤

≤ V

IL

V

OL

V

OL

I Serial port B 3 .

6 V ≥ V

IH

≥ 2 V 0.3V

≤ V

IL

V = 2 .

85 V V

OL

= 0 V

≤ 0 .

8 V

≤ 0 .

4 V

≤ 0 .

4 V

≤ 0 .

8 V state of RF part

11


14 N.C

15 GND

16 GND

G Ground

G Ground

18 GND G Ground

19 V_ANT_IN I Active Receiving DC power supply for active

20 VCC_RF_OUT

Bias voltage

O Supply antenna bias.

V

O

= 2 .

85 V ± 5 %

Bias voltage

22 Reset supply

Current<35mA

DC + 1.6

Current

~ + 3.6V

≤ 10uA

3 .

6 V ≥ V

IH

≥ 2 V 0.3V

≤ V

IL

≤ 0 .

8 V low)

23 N.C

24 N.C

25 GPIO4

26 GPIO0

I/O

3 .

6 V

3 .

15 V

≥

≥

V

IH

V

OH

≥ 2 V -

≥ 2 .

4 V -

0.3V

0.3V

≤

≤ V

IL

V

OL

3 .

6 V

3 .

15 V

≥

≥

V

IH

V

OH

≥ 2 V -

≥ 2 .

4 V -

0.3V

0.3V

≤

≤ V

IL

V

OL

≤

≤

0 .

8 V

0 .

4 V

≤

≤

0 .

8 V

0 .

4 V

27 N.C

28 N.C

29 PPS

I/O

O One pulse per second

3 .

15 V ≥ V

OH

≥ 2 .

4 V 0.3V

≤ V

OL

≤ 0 .

4 V

30 GND G Ground

31 N.C

V_GPS_3V3(+3.3V DC power Input)

This is the DC power supply input pin for GPS system. It provides voltage to module.

GND

GND provides the ground .

RXA

This is the main receiver channel and is used to receive software commands to the board from PowerGPS software or from user written

12

MEB-1000 User Manual software.

RXB

This is the auxiliary receiving channel and is used to input differential corrections to the board to enable DGPS navigation.(Option)

TXA

This is the main transmitting channel and is used to output navigation and measurement data to PowerGPS or user written software.

TXB

For user’s application (not currently used).

RF_ON

This pin indicates state of RF voltage.

GPS_RF_IN

This pin receives GPS analog signal. The line on the PCB between the antenna(or antenna connector) has to be a controlled impedance line

(Microstrip at 50Ω).

V_ANT_IN

This pin is reserved as external DC power supply input for active antenna.

If using 2.85V active antenna, pin 20 has to be connected to pin 19.

If using 3.3V or 5V active antenna ,this pin has to be connected to 3.3V or

5V power supply.

PS: The current must be ≦100mA and voltage ≦12V,if using external power supply.

VCC_RF_OUT

This pin can provide power [email protected] for active antenna.

Reset

This pin provides an active-low reset input to the board. It causes the board to reset and start searching for satellites. If not utilized, it may be left open.

PPS

This pin provides one pulse-per-second output from the board, which is synchronized to GPS time. This is not available in Trickle Power mode.

V_RTC_3V3 (Backup battery )

This is the battery backup input that powers the SRAM and RTC when main power is removed. Typical current draw is 10uA.

The supply voltage should be between 1.6V and 3.6V.

GPIO Functions

13


Several I/Os are connected to the digital interface connector for custom applications.

14


2 Software Interface

2.1 NMEA V3.1 Protocol

Its output signal level is TTL: 4800 bps (default), 8 bit data, 1 stop bit and no parity. It supports the following NMEA-0183

Messages: GGA, GSA, GSV, RMC .

NMEA Output Messages: the Engine board outputs the following messages as shown in

Below:

Table 2-1 NMEA-0183 Output Messages

NMEA Record Description

GGA Global positioning system fixed data

GSA

GSV

RMC

GNSS DOP and active satellites

GNSS satellites in view

Recommended minimum specific GNSS data

GGA-Global Positioning System Fixed Data

Below table contains the values of the following example:

$GPGGA, 161229.487, 3723.2475, N, 12158.3416, W, 1, 07, 1.0, 9.0, M, , , ,0000*18

Table 2-2 GGA Data Format

Name Example Units Description

GGA protocol header

hhmmss.sss

Message ID $GPGGA

UTC Position 161229.48

7

Latitude 3723.2475

N/S Indicator N

Longitude 12158.341

6

E/W Indicator

Position Fix Indicator

Satellites Used

HDOP

W

1

07

1.0

MSL Altitude 9.0 ddmm.mmmm

N=north or S=south

Dddmm.mmmm

E=east or W=west

See Table 2-1

Range 0 to 12 meters

Horizontal Dilution of

Precision

Geoid Separation meters

15


Age of Diff. Corr. second Null fields when DGPS is not used

Diff. Ref. Station ID 0000

Checksum *18

＜ CR＞＜LF＞ End of message termination

Table 2-3 Position Fix Indicators

Value Description

0 Fix not available or invalid

1

2

GPS SPS Mode, fix valid

Differential GPS, SPS Mode, fix valid

3-5

6

Not Supported GPS PPS Mode, fix valid

Dead Reckoning Mode, fix valid

GSA-GNSS DOP and Active Satellites


$GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.5*33

Table 2-4 GSA Data Format


Message ID

Mode 1

Mode 2

Satellite Used

Satellite Used

$GPGSA

A

3

07

02

GSA protocol header

See Table 4-2

See Table 4-1

Sv on Channel 1

Sv on Channel 2

Satellite Used

PDOP 1.8

HDOP

VDOP

1.0

1.5

Checksum *33

＜ CR＞＜LF＞

Sv on Channel 12

Position Dilution of Precision

Horizontal Dilution of Precision

Vertical Dilution of Precision

End of message termination

Table 2-5 Mode 1


1 Fix not available

2 2D

16


3 3D

Table 2-6 Mode 2


M

A

Manual-forced to operate in 2D or 3D mode

Automatic-allowed to automatically switch 2D/3D

GSV-GNSS Satellites in View


$GPGSV, 2, 1, 07, 07, 79, 048, 42, 02, 51, 062, 43, 26, 36, 256, 42, 27, 27, 138,

42*71$GPGSV, 2, 2, 07, 09, 23, 313, 42, 04, 19, 159, 41, 15, 12, 041, 42*41



$GPGSV

2

GSV protocol header

Range 1 to 3

Message ID

Number of

Messages

1

Messages

Number 1

Satellites in View

Satellite ID

Elevation

Azimuth

SNR (C/No)

1 Range 1 to 3

07

07 Channel 1(Range 1 to 32)

79 degrees Channel 1(Maximum 90)

048 degrees Channel 1(True, Range 0 to 359)

42 dBHz Range 0 to 99, null when not tracking

Satellite ID

Elevation

Azimuth

SNR (C/No)

27

27

138

42

Channel 4(Range 1 to 32) degrees Channel 4(Maximum 90) degrees Channel 4(True, Range 0 to 359) dBHz Range 0 to 99, null when not tracking

Checksum *71

＜ CR＞＜LF＞ End of message termination

1 Depending on the number of satellites tracked multiple messages of GSV data may be required.

RMC-Recommended Minimum Specific GNSS Data


$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10

17



Name Example Description

Message ID $GPRMC RMC protocol header

UTC Position

Status

161229.487

A hhmmss.sss

A=data valid or V=data not valid

N/S Indicator N N=north or S=south

E/W Indicator

Speed Over Ground

Course Over

Ground

W E=east or W=west

0.13 knots

309.62 degrees True

Magnetic Variation degrees E=east or W=west

Mode A A=Autonomous, D=DGPS, E=DR

Checksum *10

18


3 RoHS Reflow Diagram

217 o

200 o

C

C

150 o C

260 o C

245 o C

T

P

T

L

Ts max

Ts min

Ts Pretest

60~180sec

20~40sec

3 o

Ramp-up

C/sec max

T25 o C to peak, 480 sec max

Time

260 o C,10sec max

Figure 8 RoHS Reflow Diagram

60~150sec

Critical Zone

T

L

to T

P

Ramp-down

6 o C/sec

19


4 Package Specification and Order Information

Shipment Method: Tape and reel

SMT type with stamp holes (31 holes)

Figure 9 Tape & Reel Packaging Information

20


5 Contact Information

Contact: [email protected]

Headquarter:

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

Tel: 886-2-77215000

Fax: 886-277215666

Web Site: http://www.royaltek.com

Web Site Customer Service: http://www.royaltek.com/contact

6 Revision History

Title MEB-1000 GPS Receiver Module

Doc Type User Manual

Revision

Number

1.0

Date Author

2007/05/25 Amy Liu Initial Release

21

RoyalTek | MEB-1000 User Manual

Index

Table Index

Figure Index

1 Introduction

1.1 Product Features

1.2 Product Applications

1.3 Product Pictures

connector (J1)

1.4 The interface Board Pin Definition

1.5 RoyalTek Evaluation Kit MEV-1000 for MEB-1000

1.6 MEB-1000 System Block Diagram

1.7 MEB-1000 Technical Specification

1.8 Application Circuit

1.9 Recommended Layout PAD

TOP View

1.10 Mechanical Layout

1.11 Hardware Interface

2 Software Interface

2.1 NMEA V3.1 Protocol

3 RoHS Reflow Diagram

4 Package Specification and Order Information

5 Contact Information

6 Revision History

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