Gps开发资料 MTK系列芯片的设置指令.pdf-资料库

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GGPPSS EEnnggiinnee BBooaarrdd EB-230 EB-230 Data Sheet EB-230 is an ultra miniature 12 x 12 mm2 GPS engine board. It provides superior navigation performance under dynamic conditions in areas with limited sky view like urban canyons. High sensitivity up to -158dBm for weak signal operation without compromising accuracy. EB-230 is your best choice for embedded applications. Key Features : • Small form factor: 12 x 12 x 3 mm • Lead-Free – RoHS/WEEE compliant • High sensitivity -158dBm • Tracks 32-Channel of satellites • Fast Position Fix • Low power consumption PIN Definition : Applications : • Handheld devices • Automotive and Marine Navigation • Automotive Navigator Tracking • Emergency Locator • Geographic Surveying • Personal Positioning • Sporting and Recreation • Embedded applications : PDA, DSC, Smart phone, UMPC, PND, MP4 PIN Coordinates X Pin # Y 0.00 0.00 1 0.00 1.27 2 0.00 3 2.54 0.00 3.81 4 0.00 5.08 5 0.00 6.35 6 0.00 7 7.62 4.06 10.06 8 9 9.71 10.06 Pin # X 12.50 10 12.50 11 12 12.50 12.50 13 12.50 14 12.50 15 16 12.50 9.71 17 18 2.79 Unit:mm Y 7.62 6.35 5.08 3.81 2.54 1.27 0.00 -2.44 -2.44 TRANSYSTEM INC. An A+ supplier of RF microwave & GPS products 1 Ver 1.2 Ultimate EEBB

EB-230 Specifications EB-230 Data Sheet Specification Description General Sensitivity Update Rate Accuracy L1 frequcney, C/A code (SPS) 32 independent tracking channels -158dBm /Tracking; -146dBm /Acquisition Up to 5Hz Without aid: 3.0m 2D-RMS <3m CEP (50%) without SA (horizontal) DGPS (WAAS, EGNOS, MSAS, RTCM): 2.5m Acquisition (open sky) Reacquisition Dynamics Supply Voltage Power Consumption Backup Battery NMEA Message Cold Start: 36sec Warm Start: 33sec Hot Start: 1sec < 1sec Altitude: 18000m (max.) Velocity: 515m/sec (max.) Vibration: 4G (max.) DC 3.0V < 30mA @ 3.0V (w/o Active ANT) / Tracking DC 1.2V ( RTC Vcc ) NMEA0183 v3.1 baud rate 4800/9600/…/57600, default 9600 Protocol: 3V CMOS/TTL Selectable Output: GGA, GLL, GSA, GSV, RMC, and VTG Datum Antenna Serial Interface Operating Temperature Storage Temperature Operating Humidity Mounting Dimension Default WGS-84 External Active Antenna Output Voltage: 3.0 VDC RS-232, SPI -30 to 85℃ ℃ -40 to℃ 125℃ 95%, non condensing ≦ SMT Type, 18 Pin 12 x 12 x 3(H) mm *Specifications subject to change without prior notice. © TRANSYSTEM INC. all rights reserved. No.1-2 Li-Hsin Rd.I, Science-Based Industrial Park, Taiwan, R.O.C. T: +886-3-5780393 / F: +886-3-5784111 gps.sales@transystem.com.tw www.transystem.com.tw 2 Ver 1.2

Table of Contents 1 EB-230 Data Sheet Introduction ............................................................................................... 4 1.1 Key Features ................................................................................... 4 1.2 Applications ..................................................................................... 4 1.3 Look & Feel ..................................................................................... 4 2 Technical Description................................................................................ 5 2.1 Block Diagram ................................................................................. 5 2.2 Pin Definition ................................................................................... 5 2.3 Specification .................................................................................... 6 3 User Interface ........................................................................................... 7 3.1 Protocol ........................................................................................... 7 3.1.1 NMEA Protocol ....................................................................... 7 3.1.2 MTK NMEA Packet Format .................................................... 8 3.1.3 MTK NMEA Packet Protocol .................................................. 8 3.1.4 MTK NMEA Packet List .......................................................... 8 4 Dimension and Package......................................................................... 13 4.1 Mechanical Dimension .................................................................. 13 4.2 Recommend Layout Pattern.......................................................... 13 4.3 Package......................................................................................... 13 5 Application Information ........................................................................... 14 5.1 GPS Antenna Recommendations.................................................. 14 5.2 Application Circuit.......................................................................... 14 5.3 General GPS Receiver User’s Tips ............................................... 15 3 Ver 1.2

1 EB-230 Data Sheet Introduction EB-230 is an ultra miniature 12 x12mm2 GPS engine board. It provides superior navigation performance under dynamic conditions in areas with limited sky view like urban canyons. High sensitivity up to -158dBm for weak signal operation without compromising accuracy. EB-230 is your best choice for embedded applications. 1.1 Key Features 1.2 Applications 1.3 Look & Feel • Small form factor: 12 x 12 x 3 mm • Lead-Free – RoHS/WEEE compliant • High sensitivity -158dBm • Tracks 32-Channel of satellites • Fast Position Fix, 36/ 33/ 1s for Cold/ Warm/ Hot start • Low power consumption • Handheld devices • Automotive and Marine Navigation • Automotive Navigator Tracking • Emergency Locator • Geographic Surveying • Personal Positioning • Sporting and Recreation • Embedded applications such as: PDA, DSC, Smart phone, UMPC, PND, MP4 4 Ver 1.2

2 Technical Description 2.1 Block Diagram EB-230 Data Sheet 2.2 Pin Definition Pin# Signal Name Type Description RF Input 1 2 GND 3 V30D 4 GPS status/ Antenna port, L1, 1575.42MHz, 50 ohm I P Ground P O GPS status, blink when GPS has position fix Digital power supply, 3.0V±10% General input/ output 1Hz pulse 10% duty cycle when GPS has position fix 3V CMOS level, data output from EB-230 3V CMOS level, data into EB-230 GPIO0 1PPS 5 TXD 6 RXD 7 8 GND 9 GND 10 GPIO6/SO 11 GPIO4/SCS1 12 GPIO5/SCS0 13 GPIO7/SIN 14 GPIO8/SCK 15 V12RTC 16 V30A 17 GND 18 GND P: Power I: Input O: Output I/O*: Input or Output, Open if not used O O I P Ground P Ground I/O* General input/ output, SPI data output I/O* General input/ output, SPI chip select 1 I/O* General input/ output, SPI chip select 0 I/O* General input/ output, SPI data input I/O* General input/ output, SPI clock P P P Ground P Ground RTC power 1.0~1.5Vdc, 500uA max Analog power supply, 3.0V±10% 5 Ver 1.2

2.3 Specification General EB-230 Data Sheet GPS technology MTK GPS chipset Frequency L1, 1575.42 MHz C/A Code Channels Sensitivity 1.023 MHz chip rate 32 channels all in view tracking Better than -158dBm Without aid: 3.0 m 2D-RMS Position Receiver Accuracy Datum Time to First Fix Velocity Without aid: 0.1 m/s Time Datum Hot start Warm start Cold start 100 ns RMS WGS84(Default) total 219 datums 1 sec, average 33 sec, average 36 sec, average DGPS (WAAS, EGNOS, MSAS, RTCM): 2.5 m Reacquisition <1sec Protocol GPS Output Data Update Rate NMEA 0183 (V3.01) - GGA, GLL ,GSA, GSV, RMC, VTG Baud rate 9600 bps, Data bit: 8, Stop bit: 1 (default) 1HZ(default) Enable (1Hz pulse 10% duty cycle) <4G <18,000 meters <515 meters/sec. 20 m/sec. Acquisition: 55 mA Tracking: <30 mA (w/o Active ANT) VCC 3.0Vdc ±10% VBAT 1.0~1.5Vdc -30℃ ~ +85℃ -40℃ ~ +125℃ 12 x 12 x 3mm 5% to 95% non-condensing 50Ω Build-in Short circuit and Over current protection 3.0VDC 18Pin 1PPS Limitations Acceleration Limit Altitude Limit Velocity Limit Jerk Limit Operation Current DC Input Range Power Physical Temperature Dimension Operating Storage Humidity Antenna Mounting Impedance Protection Output Voltage SMT Type 6 Ver 1.2

EB-230 Data Sheet EB-230 provides 2- wire digital UART port for communication of GPS position data using NMEA protocol or MTK extension protocol. UART port is capable of 4800 to 115200 baud rate. Additional 5-pin SPI port is provided for connection with external sensors such as compass, gyro…etc. SPI port share same pin location with general purpose input / output pins (pin #10 ~14). 3 User Interface 3.1 Protocol EB-230 is default to support standard NMEA-0183 protocol. In addition, a series of MTK extensions (PMTK messages) have been developed that can be used to provide extended capabilities common to many applications. To achieve optimal compatibility it is intended to implement 100% compatible operating modes to existing protocols since these protocols are largely symmetrical and designed to provide a bi-directional exchange of data between GPS equipments. 3.1.1 NMEA Protocol EB-230 is capable of supporting following NMEA formats: NMEA Prefix Format $GPGGA $GPGLL $GPGSA $GPGSV $GPRMC $GPVTG $GPZDA GPS fix data Geographic position Latitude / Longitude GNSS DOP and active satellites Satellites in view Recommended minimum specific GNSS data Velocity and track over ground Date and time Direction Out Out Out Out Out Out Out 7 Ver 1.2

Preamble TalkerID PktType DataField Maximum packet length is restricted to 255 bytes. * CHK1 CHK2 CR LF Field Preamble TalkerID Type Length 1 byte 4 byte Character string “PMTK” Character “$” Description PktType 3 byte Character string DataField Variable From “000” to “999”, an identifier used to tell the decoder how to decode the packet A “,” must be inserted before each data filed to help decoder process the DataField The star symbol is used to mark the end of DataField * CHK1, CHK2 CR, LF Character 1 byte 2 byte Character string Checksum of the data between 2 byte preamble “,” and “*” Used to identify the end of a packet Binary data Sample Packet: $PMTK000*32 3.1.3 MTK NMEA Packet Protocol In order to inform the sender whether the receiver has received the packet, an acknowledge packet PMTK_ACK should return after the receiver receives a packet. 3.1.2 MTK NMEA Packet Format EB-230 Data Sheet 3.1.4 MTK NMEA Packet List Abbreviation / Syntax Pkt Type 000 PMTK_TEST 001 PMTK_ACK PMTK001,Cmd,Flag 010 PMTK_SYS_MSG PMTK001,Msg Data Field None Cmd: Command / packet type the acknowledge responds Flag: 0 = Invalid command / packet 1 = Unsupported command / packet type 2 = Valid command / packet, but action failed 3 = Valid command / packet, and action succeeded Msg: System message. 0 : Unknown 1: Startup Meaning / Example / Return Test Packet $PMTK000*32 Acknowledge of PMTK command $PMTK001,604,3*32 Output system message $PMTK010,001*2E 8 Ver 1.2

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Gps开发资料 MTK系列芯片的设置指令.pdf

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