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MEB-1000 User Manual
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
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MEB-1000 User Manual Index 1 Introduction.......................................................................................................... 1 1.1 Product Features...................................................................................1 1.2 Product Applications..............................................................................1 1.3 Product Pictures....................................................................................2 1.4 The interface Board P
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MEB-1000 User Manual 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 Tabl
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MEB-1000 User Manual 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
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MEB-1000 User Manual 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 Featu
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MEB-1000 User Manual 1.3 Product Pictures (1) MEB-1000 pin1 Figure 1 MEB-1000 Picture (2) MEB-1000 Interface board SMARF connector (J1) J2 CONNECTOR Pin 2 U4 Pin 1 Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 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 3.3V ±5% ANTPWR I DC Supply Voltage Output 1 NC 2 VBAT I RTC Backup Battery DC +1.6 ~ +3.6V 3 Supply 2
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MEB-1000 User Manual 3.3V ±5% 4 VCC I DC Supply Voltage Output Reset I External Reset Signal 5 6 NC NC 7 8 NC NC 9 10 NC TX0 O Serial Port 0 11 12 RX0 I Serial Port 0 NC 13 14 TX1 O Serial Port 1 RX1 I Serial Port 1 15 16 NC NC 17 18 GND G Reference Ground Time Mark O One pulse per second 19 20 GND G Reference Ground Table 1-2 Switch U4 Pin # Signal Name 0/1 Description Characteristics GPIO-0 GPIO input/output Switch: 1 0:Low 1
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MEB-1000 User Manual antenna. Table 1-3 Connector: Pin # Description Characteristics GPS RF Connector 1575.42MHz J1 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
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MEB-1000 User Manual 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 ：50 Ω No Function Specification GPS receiver MediaTek MT3179 (RF )& MT3301 (Digital) Chipset 1 2 Frequency L1 1575.42MHz. 3 Code C.A. Code. 4 Channels 32 Sensitivity (Acquisition) 5 -130dBm. 6 Cold start 36 sec (open sky) Warm
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MEB-1000 User Manual Reacquisition < 1sec 9 10 Position accuracy 3 meters 2D RMS(w/o aid) Maximum altitude 18000 m 11 12 Maximum velocity 515 m/s 13 Trickle power mode N/A 14 Update rate 1Hz Testability N/A 15 It can store the protocol setup in the SRAM and Flash memory. 16 Protocol setup DGPS 1.WAAS, EGNOS 17 2.RTCM protocol Interface 18 LNA No LNA 19 I/O Pin 31pin Mechanical requirements ≦3.5g 20 Weight Power consumption 21 Vcc DC 3.3 ±5% 22 Current GPS : < 65mA@3.3
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MEB-1000 User Manual 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 (10K Ω). 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 (10K Ω), 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 batter
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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
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MEB-1000 User Manual 1.9 Recommended Layout PAD TOP View Figure 5 Recommended Layout Pad 9
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MEB-1000 User Manual 1.10 Mechanical Layout P1 7 P1 6 P3 1 P1 Unit ：mm Figure 6 Mechanical Layout 1.11 Hardware Interface Interface Pin Number: 10
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MEB-1000 User Manual Figure 7 Interface Pin Number Table 1-4 Pin Definition Pin # Signal Name I/O Description Characteristics 1 V_GPS_3V3 I DC Supply DC +3.3V ±5% Voltage input 2 GND G Ground Reference Ground 3 N.C 4 RXA I Serial port A 3.6V ≥V ≥ 2V - 0.3V ≤V ≤ 0.8V IH IL 3.15V ≥V ≥ 2.4V - 0.3V ≤V ≤ 0.4V 5 TXA O Serial port A OH OL 3.15V ≥V ≥ 2.4V - 0.3V ≤V ≤ 0.4V 6 TXB O Serial port B OH OL 3.6V ≥V ≥ 2V - 0.3V ≤V ≤ 0.8V 7 RXB I Serial port B IH IL 8 N.C
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MEB-1000 User Manual 14 N.C 15 GND G Ground Reference Ground 16 GND G Ground Reference Ground 17 GPS_RF_IN I GPS Signal input50 Ω @1.57542GHz 18 GND G Ground Reference Ground 19 V_ANT_IN I Active Antenna Receiving DC power supply for active Bias voltage antenna bias. 20 VCC_RF_OUT O Supply Antenna V = 2.85V ± 5% O Bias voltage Current<35mA 21 V_RTC_3V3 I Backup voltage DC +1.6 ~ +3.6V supply Current ≤ 10uA 22 Reset I Reset (Active 3.6V ≥V ≥ 2V - 0.3V ≤V ≤ 0.8V IH IL l
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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
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MEB-1000 User Manual Several I/Os are connected to the digital interface connector for custom applications. 14
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MEB-1000 User Manual 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 GNSS DOP and active satellites GSV GNSS satellites in view RMC Reco
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MEB-1000 User Manual Units M meters Null fields when DGPS is not Age of Diff. Corr. second 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 GPS SPS Mode, fix valid 2 Differential GPS, SPS Mode, fix valid 3-5 Not Supported GPS PPS Mode, fix valid 6 Dead Reckoning Mode, fix valid GSA-GNSS DOP and Active Satellites Below table contains the values of th
