Globalsat EB-3531 User Manual

EB-3531

Version 1.2.1

GPS Engine Board

EB-3531

Globalsat Technology Corporation

16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei Hsien 235, Taiwan
Tel: [phone]/ Fax: [phone]

[e-mail]
www.globalsat.com.tw

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USGlobalSat, Inc.

4740 Yorba Court, Chino, CA 91710

1
T

909.597.8525 / Fax: [phone]

el:

oem

@usglobalsat.com

www.usglobalsat.com

Specifications are subject to be changed without notice.

EB-3531

Version 1.2.1

1. Product Information



Product Part I.D. EB-3531

 Product Description:

The EB-3531 is a compact, high performance, low power consumption GPS engine board. It

features a SiRF Star III chipset, which can track up to 20 satellites at a time and perform fast

TTFF (time to first fix) in weak signal environments. The EB-3531 is ideal for automotive or

marine navigation, personal positioning, fleet management, and mobile-phone navigation.

 Product Features

9 SiRF GSC3f/LP high performance GPS Chipset
9 Very high sensitivity (Tracking Sensitivity: -159 dBm)
9 Extremely fast TTFF (Time To First Fix) at low signal level
9 All-in-view 20-channel parallel processing
9 Two serial ports
9 4Mb flash
9 Built-in LNA
9 Compact size (15mm * 13mm * 2.2mm) suitable for space-sensitive application
9 One size component, easy to mount on another PCB board
9 Support NMEA 0183 and SiRF binary protocol
9 WAAS / EGNOS MSAS support
9 RoHS compliant

 Product Specifications

GPS Receiver

Chipset SiRF GSC3f/LP

Frequency L1, 1575.42 MHz

Code C/A Code

Protocol NMEA 0183 v3.0

Available Baud Rate 4,800 to 57,600 bps adjustable

Default:GGA,GSA,GSV,RMC
Support:VTG,GLL,ZDA)
SiRF binary and NMEA Command

Specifications are subject to be changed without notice.

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EB-3531

Version 1.2.1

Channels 20

Flash 4Mbit

Sensitivity Tracking:-159dBm

Cold Start 42 seconds, average

Warm Start 38 seconds, average

Hot Start 1 second, average

Reacquisition 0.1 second, average

Accuracy Position: 10 meters, 2D RMS

5 meters, 2D RMS, WAAS enabled
Velocity: 0.1 m/s
Time: 1us synchronized to GPS time

Maximum Altitude 18,000 meter

Maximum Velocity 515 meter/second

Maximum Acceleration 4G

Update Rate 1 Hz

DGPS WAAS, EGNOS, MSAS

Datum WGS-84

Interface

I/O Pins 2 serial ports

Physical Characteristic

Type 22-pin stamp holes

Dimensions 15 mm * 13mm * 2.2 mm ±0.2mm

DC Characteristics

Power Supply 3.3Vdc ± 5%

Backup Voltage 2.0 ~ 3.6Vdc

Power Consumption Acquisition: 60mA

Tracking: 42mA

Environmental Range

Humidity Range 5% to 95% non-condensing

Operation Temperature -30C to 85C

Storage Temperature -40C to 85C

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Specifications are subject to be changed without notice.

2. Technical Information

 Block Diagram

EB-3531

Version 1.2.1

 Module Pin Assignment

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Specifications are subject to be changed without notice.

EB-3531

Pin NO. Pin Name I/O Remark

1. RXB I Serial input (default null)

2. TXB O Serial output (default null)

3. TIMEMARK I/O One pulse per second.

4. TXA O Serial output (default NMEA)

5. RXA I Serial input (default NMEA)

6. NC NC

7. GPIO0 I/O General purpose I/O

8. GPIO1 I/O General purpose I/O

9. RF_PWR CTR RF Power ON/OFF.

10. ON_OFF I Edge triggered soft on/off request. It must be low for normal application.

11. VBAT PWR Backup battery supply voltage

12. VCC PWR Main power supply to the engine board.

13. GPIO13 I/O General purpose I/O

14. GPIO14 I/O General purpose I/O

15. GPIO15

16. BOOTSEL I/O Set this pin to high for programming flash.

17. VCC_RF PWR Regulated RF power output.

18. GND G Ground.

19. RF IN RF GPS antenna input.

20. GND G Ground.

21. GND G Ground.

22. GND G Ground.

O GPS status output.

Version 1.2.1

Specifications are subject to be changed without notice.

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 Application Circuit

TXA

RXA

GPS_3V3

C5

1UF

1 2

1 2

C6

0.1U F

EB-3531

L3

BLM18AG121SN1D

L4

BLM18AG121SN1D

D1

RB521S

R6
270R

1 2

D2

RB512S

1

RXB

2

TXB

3

1PPS

4

TXA

5

RXA

21

GND

6

NC

7

GPIO0

8

GPIO1

9

RF_PWR

10 11

ON_OFF VBAT

M1

EB-3531

GND

RF_IN

GND

VCC_RF

BOOTSEL

GND

GPIO15

GPIO14

GPIO13

VCC

Version 1.2.1

A1

GPS_ANTENNA

1

20

19

18

17

16

22

15

14

13

12

GPS_3V3

C7

10UF

12

BATTERY

MS518S-FL35E

GPS POWER

VIN

C1

22UF/ 10V

U1

1

VIN

2

GND

XC6209B332MRN 3. 3V

VOUT

NCCE

5

43

C2

10UF/ 16V

L1

BLM18AG121SN1D

C3

470PF

GPS Active Antenna Specifications (Recommendation)

Frequency: 1575.42 + 2MHz
Axial Ratio: 3 dB Typical
Output Impedance: 50
Polarization: RHCP
Amplifier Gain: 18~22dB Typical
Output VSWR: 2.0 Max.
Noise Figure: 2.0 dB Max
Antenna Input Voltage: 2.85V (Typ.)

GPS_3V3

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Specifications are subject to be changed without notice.

 Dimensions

EB-3531

Version 1.2.1

 Recommend Layout PAD

Tolerances: ±0.1mm

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Specifications are subject to be changed without notice.