RET-3570 Operational Manual
Contents
1. 1 7 Mechanical Layout L 7 25 4403 rete Ti F PLT r gJ L pps S L L 1 1 8 RET 3570 Test Software Specification No Function Specification 1 Clock offset 88000Hz lt Measurement lt 104000Hz 2 Clock Drift Measurement lt 200Hz 3 C No Hi Power Mean Measurement 38dB 4 C No Hi Power Sigma Measurement lt 2dB 5 Bit Sync Measurement lt 5 Sec 6 Frame Sync Measurement lt 28 Sec 7 Phase Error Measurement lt 0 22 RoyalTek Confidential RoyalTek FRA BW ER BR to BRA G 1 9 Hardware interface Interface Pin Number P16 P17 P18 BR Ns VVVVVIUVIVVYV LT S l l CLO CO JOD CLn P GINo n RET 3970 RET 3570 Operational Manual Pin Signal Name UO Description Characteristics 1 V GPS 3V3 II DC Supply Voltage input DC 3 3Vt5 2 GND G Ground Reference Ground 3 BOOT I Boot mode 1 995V lt V y lt 3 15V 0 3V lt V lt 0 855V 4 RXA I Serial port A 1 995V lt V y lt 3 15V 0 3V lt V lt 0 855V 5 TXA O Serial port A 2 375V lt Voy lt 2 85V Vor lt 0 715V 6 TXB O Serial port B 2 375V lt Voy S2 85V Voz lt 0 715V 7 RXB I Serial port B 1 995 lt V lt 3 15V 0 3V lt V lt 0 855V 8 N C 9 RE ON O Indicates power state of RF y an 2 85V Vo 0V part 10 GND G Ground Reference Ground 11 AUDIO_R O Audio right channel output V Output voltage 66mV typical 75mV max R 4p Out2. 0183 Output Messages NMEA Record Description GGA Global positioning system fixed data GSA GNSS DOP and active satellites GSV GNSS satellites in view RMC Recommended minimum specific GNSS data GGA Global Positioning System Fixed Data Table 2 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 GGA Data Format Name Example Units Description Message ID GPGGA GGA protocol header UTC Position 161229 487 hhmmss sss Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 Dddmm mmmm E W Indicator W E east or W west Position Fix Indicator 1 See Table 2 1 Satellites Used 07 Range 0 to 12 HDOP 1 0 Horizontal Dilution of Precision MSL Altitude 9 0 meters Units M meters Geoid Separation meters Units M meters Age of Diff Corr second Null fields when DGPS is not used Diff Ref Station ID 0000 Checksum 18 lt CR gt lt LF gt End of message termination RoyalTek Confidential RoyalTek lI pe AS 8 5 RAJ RET 3570 Operational Manual Table 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 Ta
3. BR SD 4 Package Specification and Order Information Shipment Method Tape and reel RoyalTek Confidential Roya I Te k RET 3570 Operational Manual ABIR ARA I 4 Contact Royaltek Contact sales royaltek com 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 5 Revision History Title RET 3570 GPS Receiver Module Doc Type User Manual aas Date Author Change notice 0 1 2006 03 08 May Chen Initial Release 0 2 2006 06 01 May Chen Modify HW spec 0 3 2006 07 06 May Chen Modify Application Circuit Notes Pin description 0 4 2006 07 06 May Chen Modify HW Interface Pin defined statement Modify Introduction 0 5 2006 07 17 May Chen Change Interface board picture Modify Interface board Switch U4 pin 3 Modify 1 6 Recommend layout pad picture 1 0 2006 07 17 May Chen Final Version Modify 1 5 Application Circuit Remove Serial Interface I The TXA pin is recommended to pull up 10K Q to increase the stability of serial data IT Remove to pull up 10K Q 1 1 2006 08 17 May Chen Copyright 2005 2006 RoyalTek Company Ltd RoyalTek Confidential
4. locator speed camera detector and vehicle locator Product Features 20 parallel channels TMC embedded TMC frequency 87 5MHz 108MHz SMT type with stamp holes High quality stereo audio output TCXO design 0 1 second reacquisition time Small form factor with embedded SiRF Star III single chip technology NMEA 0183 compliant protocol Royaltek TMC protocol Enhanced algorithm for navigation stability Excellent sensitivity for urban canyon and foliage environments DGPS WAAS EGNOS support Auto recovery while RTC crashes ooo oe eee eyo a 1 Product Applications Automotive navigation Personal positioning and navigation Marine navigation gt gt Timing application RoyalTek Confidential RoyalTek Hint A BI BR AX fo ARA Sj 1 2 Product Pictures 1 RET 3570 The interface board pin definition Pin 1 RET 3570 Operational Manual J2 CONNECTOR Pin Signal Name I O Description Characteristics 1 N C 2 N C 3 Battery I Backup voltage supply pC 2 5 3 6V Current lt 10uA 4 VCC I DC Supply Voltage input IDC 3 3V 10 5 Reset I Reset Active low Vin gt 2 3V Vy lt 0 8V 6 10 IN C 11 TXA O Serial port A 2 375V lt Voy lt 2 85V Vo lt 0 715V CMOS TTL level 12 RXA I Serial port A 1 995V lt V y lt 3 15V 0 3V lt V lt 0 855V CMOS TTL Level 13 IN C 14 TXB O Serial port B 2 375V lt Voy lt 2 85V Vor lt 0 715V CMOS
5. 0 Series Block Diagram System block diagram description 1 External antenna 2 4 Mega bits flash memory 3 31 pin I O pin Antenna Antenna RET 3570 Block RoyalTek Confidential RoyalTek Hat A BY ER BS to BRA G RET 3570 Operational Manual 1 4 RET 3570 Technical Specification Impedance 50Q No Function Specification GPS receiver 1 Chipset SiRF Star III GSC3f Digital RF in a single package 2 Frequency L1 1575 42MHz 3 Code C A Code 4 Channels 20 parallel 5 Sensitivity Acquisition It shall show C No 40 dB Hz when external power is 130dBm 6 Cold start 42 sec Signal Strength gt 30 dB HZ 7 Warm start 35 sec Signal Strength gt 30 dB HZ 8 Hot start l sec Signal Strength gt 30 dB HZ 9 Reacquisition 0 1sec typical 10 Position accuracy 10meters at 2D RMS 11 Maximum altitude 18000 m 12 Maximum velocity 514 m s 13 Trickle power mode Duty cycle 34 Variable 14 Update rate Continuous operation 1 Hz 15 Testability It shall be able to be tested by SiRF test IV and single channel simulator 16 Protocol setup It shall store the protocol setup in the SRAM memory 17 DGPS 1 WAAS EGNOS 2 RTCM protocol Interface 18 LNA No LNA 19 I O Pin 31pin TMC RDS receiver 20 Frequency 87 5 108MHz US Europe 21 RDS sensitivity 24 7uV typical A f 22 5kHz fAF 1kHz L R fRDS 1 2kHz De emphasis 50us
6. Block Quality Rate 285 22 Right and Left audio output Conditions voltage Ver ImV 3 L R Af 22 5KHz f oa KHz No pre emphasis TC 75us Output voltage Min 55 mV Typ 66 mV Max 75mV Mechanical requirements 23 Weight 3 5g Power consumption 24 Vcc DC 3 3 5 25 Current GPS Tricking mode Current 65mA average RoyalTek Confidential RoyalTek I FRA SORA S RET 3570 Operational Manual Fix mode Current 57mA average RDS Current 15mA typical Environment 26 Operating temperature 40 85 C 27 Humidity lt 95 1 5 Application Circuit Reference L RET 3570 Boy US Note 4 1 1 Note 5 GND GND FM_ANTENNA SPS ANTENNA 12 Gps Rr IN FM_RF_IN GND GND S 2 AUDIO L VANT M gt he V_ANT_IN AUDIO L H AUDIO R vec_RF lt lt 20 YCC RF OUT AUDIO R Hio ATOR Note 7 us E RE 31 V BAT Note 3 21 YIN 899 Man E 21 y RIC 3 3 GND F 33 RESET RF ON 3 SRF ON c Note 8 5 24 INC NG pF R39 220 Rub 0 Haal RB Fe R38 220 TXB Note 2 1uF cpio4 lt lt GPIO U 26 SPIO TXB f TXA GPIO 0 lt lt BY 7 GPIO O TXA f EXA TER ote GND V_GPS_3V3 T c1 RET 3570 N S Note 1 1uF i Note 1 Ground Planes RET3570 GPS receiver needs two different ground planes These pins 13 gt 15 gt 16 gt 18 should be connected to analog ground These pins 2 gt 10 gt 30 should be connected to digital ground 2 S
7. RoyalTek I EAS 0 SORA S RET 3570 Operational Manual RET 3570 Operational Manual Version 1 1 2006 08 17 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 Approved by Checked by Prepared by MF Hi BE RoyalTek Confidential RoyalTek S X pe AS 5 HR in al RET 3570 Operational Manual 1 Introduction RoyalTek RET 3570 small form factor board is the newest generation of RoyalTek GPS plus TMC module TMC can deliver real time traffic and travel information to drivers The driver can be notified of problems on the planned route at the same time TMC calculates and provide an alternative route to help driver avoid the incident The combo module is powered by latest SiRF Star III single chip and 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
8. TTL level RoyalTek Confidential RoyalTek FRA BY BR BS to FIRAS RET 3570 Operational Manual 15 RXB I Serial port B 1 995V Z V 3 15V 0 3V lt V lt 0 855V CMOS TTL Level 16 INC 17 Boot I Boot mode 1 995V lt V y lt 3 15V 0 3V SV lt 0 855V 18 GND G Ground 19 IN C 20 N C Switch U4 Pin Signal Name 0 1 Description Characteristics 1 GPIO 0 GPIO input output Switch U Low 1 High CMOS TTL Level 2 GPIO 4 GPIO input output Switch 0 Low 1 High CMOS TTL Level 3 GPIO 15 GPIO input output Switch N C for N C for RET 3570 0 Low 1 High CMOS TTL Level RET 3570 N C for RET 3570 4 PPS PPS output Switch 0 Low _1 PPS output 5 GPS_3V3 Power supply for Switch GPS section 0 Low 1 DC 3 3V output 6 TMC_3V3 Power supply for Switch TMC section 0 Low 1 DC 3 3V output 7 N C 8 RF_Bias RF Bias voltage 0 open No voltage provide antenna switch 1 Provide 2 85V to antenna Connector Pin Description Characteristics J1 GPS RF Connector 1575 42MHz J5 FM RF Connector 87 5MHz 108MHz J4 Stereo Jack Audio output Right and Left channel RoyalTek Evaluation Kit REV 2000 for RET 3570 Please refer to RoyalTek Evaluation Kit REV 2000 for RET 3570 Operational Manual for more information RoyalTek Confidential RoyalTek IS By RZ AS 10 5 HR 1 S RET 3570 Operational Manual 1 3 RET 357
9. ble 2 4 contains the values of the following example GPGSA A 3 07 02 26 27 09 04 15 1 8 1 0 1 5 33 Table 4 GSA Data Format Name Example Units Description Message ID GPGSA GSA protocol header Mode 1 A See Table 4 2 Mode 2 3 See Table 4 1 Satellite Used 07 Sv on Channel 1 Satellite Used 02 Sv on Channel 2 Satellite Used Sv on Channel 12 PDOP 1 8 Position Dilution of Precision HDOP 1 0 Horizontal Dilution of Precision VDOP 1 5 Vertical Dilution of Precision Checksum 33 lt CR gt lt LF gt End of message termination Table 5 Mode 1 Value Description 1 Fix not available 2 2D 3 3D Table 6 Mode 2 Value Description RoyalTek Confidential RoyalTek lI pe AS 1 5 RAJ RET 3570 Operational Manual M Manual forced to operate in 2D or 3D mode A Automatic allowed to automatically switch 2D 3D GSV GNSS Satellites in View Table 7 contains the values of the following example GPGSV 2 1 07 07 79 048 42 02 51 062 43 26 36 256 42 27 27 138 42 71 GPGSY 2 2 07 09 23 313 42 04 19 159 41 15 12 041 42 41 Table 7 GGA Data Format Name Example Units Description Message ID GPGSV GSV protocol header Number of 2 Range to 3 Messages Messages Number 1 Range 1 to 3 Satellites in View 07 Satellite ID 07 Channel 1 Range 1 to 32 Elevation 79
10. degrees Channel 1 Maximum 90 Azimuth 048 degrees Channel 1 True Range 0 to 359 SNR C No 42 dBHz Range 0 to 99 null when not tracking Satellite ID 27 Channel 4 Range 1 to 32 Elevation 27 degrees Channel 4 Maximum 90 Azimuth 138 degrees Channel 4 True Range 0 to 359 SNR C No 42 dBHz Range 0 to 99 null when not tracking Checksum 71 lt CR gt lt LF gt End of message termination Depending on the number of satellites tracked multiple messages of GSV data may be required RMC Recommended Minimum Specific GNSS Data Table 8 contains the values of the following example GPRMC 161229 487 A 3723 2475 N 12158 3416 W 0 13 309 62 120598 10 Table 8 GGA Data Format Name Example Units Description Message ID GPRMC RMC protocol header UTC Position 161229 487 hhmmss sss RoyalTek Confidential RoyalTek AE By RS AS 10 5 HR 1 S RET 3570 Operational Manual Status A A data valid or V data not valid Latitude 3723 2475 ddmm mmmm N S Indicator N N north or S south Longitude 12158 3416 dddmm mmmm E W Indicator W E east or W west Speed Over Ground 0 13 knots Course Over Ground 309 62 degrees True Date 120598 ddmmyy Magnetic Variation degrees E east or W west Mode A A Autonomous D DGPS E DR Checksum 10 3 GPS Receiver User s Tip A GPS signal will be affected by weather and environment conditions so it is r
11. des voltage 2 85V If you use an active antenna you can connect this pin to V_ANT_IN pin pin 19 for providing bias voltage of an active antenna The bias voltage will run through GPS_RF_IN pin to provide active antenna bias voltage from Vec_RF_OUT pin If your bias voltage of an active antenna isn t 2 85V you can input bias voltage that you need to Y ANT IN pin pin 19 The input bias voltage will run through GPS RF IN pin to provide active antenna bias voltage from V_ANT_IN pin PS I The maximum power consumption of active antenna is around 100mW IL The input gain ranges from 12 to 26dB 8 GPIO The GPIO pin is recommended to connect to serial resistance 220 if the GPIO function is used If GPIO function is not used it won t connect anything RoyalTek Confidential RoyalTek I ERA eR A RET 3570 Operational Manual 1 6 Recommended layout PAD 25 4000mm 24 9000mm 1 9000mm 7 1 9000mm P17 P14 1 9000mm L 9000mm P18 P13 1 9000mm 1 9000mm P19 P12 1 9000mm P1 i 1 9000mm P20 2 8000mm P31 34 h S mm P93 DS i mm 12770mm P24 P7 L2770mm TR P25 ES Rh L DID L lec P27 P4 Rh 1 277 0mm P28 L 1 27 70mp 1 277 Oram x E 29 D4 Le770mr 3 0 U S 1 5000mm d 1 5000mm M RoyalTek Confidential RoyalTek SI ay EA 0 RA RET 3570 Operational Manual
12. ecommended to use the GPS receiver under less shielding environments to ensure GPS receiver has better receiving performance B When GPS receiver is moving it will prolong the time to fix the position so it is recommended to wait for the satellite signals locked at a fixed point when first power on the GPS receiver to ensure to lock the GPS signal at the shortest time C The following situation will affect the GPS receiving performance i Solar control filmed windows ii Metal shielded such as umbrella or in vehicle iii Among high buildings iv Under bridges or tunnels v Under high voltage cables or near by radio wave sources such as mobile phone base stations vi Bad or heavy cloudy weather D Tf the satellite signals can not be locked or encounter receiving problem while in the urban area the following steps are suggested i Please plug the external active antenna into GPS receiver and put the antenna on outdoor or the roof of the vehicle for better receiving performance ii Move to another open space or reposition GPS receiver toward the direction with less blockage iii Move the GPS receiver away from the interferences resources iv Wait until the weather condition is improved E While a GPS with a backup battery the GPS receiver can fix a position immediately at next power on if the build in backup battery is full recharged RoyalTek Confidential Roya I Te k RET 3570 Operational Manual FA BL RRA fo
13. erial Interface D The TXB pin is recommended to connect to serial resistance 220 if the DGPS output is used If the DGPS output is not used it won t connect anything I The RXB pin is recommended to connect to serial resistance 220Q if the DGPS output is used If the DGPS output is not used it won t connect anything 3 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 float it If you use a backup battery you should add a bypassing capacitor 10uF at V_RTC_3V3 RoyalTek Confidential RoyalTek I BRAT RET 3570 Operational Manual pin to reduce noise and increase the stability 4 GPS_RF_IN Connecting to the antenna has to be routed on the PCB The transmission line must control impedance to connect RF_IN to the antenna or any antenna connectors that you prefer Impedance 509 5 FM_RF_IN Connecting to the antenna has to be routed on the PCB The transmission line must control impedance to connect FM_RF_IN to the antenna or any antenna connectors that you prefer Impedance 5002 6 Power Connect V_GPS_3V3 and V_TMC_3V3 pin to DC 3 3V The power supply must add a bypassing capacitor 10uF and luF to reduce the noise from power supply and increase power stability 7 wm Active antenna bias voltage The Vcc_RF_OUT pin pin 20 provi
14. g 2 85V active antenna the 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 lt 100mA and voltage lt 12V if external power supply is used VCC_RF_OUT This pin can provide power 80mA 2 85V for an active antenna RESET This pin provides an active low reset input for the board It causes that the board resets and starts to search for satellites If RESET pin is not used it won t connect anything 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 the main power is removed Typical current draw is 10uA RoyalTek Confidential RoyalTek Hint A BY BR AX fo ARA 9 RET 3570 Operational Manual The supply voltage should be between 2 5V and 3 6V GPIO Functions Several I Os are connected to the digital interface connector for customer applications RoyalTek Confidential RoyalTek S pe aS 5 HR N RET 3570 Operational Manual 2 Software Interface NMEA V3 0 Protocol Its output signal level is TTL 38400 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 Table 1 Table 1 NMEA
15. oltage for module GND GND provides the ground BOOT Set this pin to high for programming flash RXA This is the main receiver channel The main function is to receive software commands from SIRFdemo software or other user s application RXB This is the auxiliary receiving channel The main function is to input differential corrections then deliver them to the board for DGPS navigation RoyalTek Confidential RoyalTek S X I AS 5 HR in S RET 3570 Operational Manual TXA This is the main transmitting channel and is used to output navigation and measurement data to SiRFdemo or from user s application TXB For user s application Not current use RF_ON This pin indicates the status of RF voltage V_TMC_3V3 3 3V DC power Input This is the DC power supply input pin for TMC function It provides voltage for TMC section of the module AUDIO_R This pin is the function of audio right channel output AUDIO_L This pin is the function of audio left channel output FM_RF_IN This pin can receive FM analog signal The trace on the PCB from the antenna or antenna connector has to be controlled impedance line Micro strip at 50 GPS_RF_IN This pin can receive GPS analog signal The trace on the PCB between the antenna or antenna connector has to be a controlled impedance line Micro strip at 50Q V_ANT_IN This pin is reserved as external DC power supply input for an active antenna If usin
16. put resistance 50 Q min 100Q 12 AUDIO_L O Audio Left channel output V Output voltage 66mV typical 75mV max Ra Output resistance 50 Q min 100 Q 13 GND G Ground Reference Ground 14 JEM REIN I FM antenna input FM antenna input Input impedance 50 Q Frequency 87 5 108MHz RoyalTek Confidential RoyalTek FRA BY ER BR to BRA G RET 3570 Operational Manual 15 GND G Ground Reference Ground 16 GND G Ground Reference Ground 17 GPS RF IN JI GPS Signal input 50 Q 1 57542GHz 18 GND G Ground Reference Ground 19 V_ANT_IN I Active Antenna Bias Receiving DC power supply for active antenna bias voltage 20 VCC_RF_OUT O Supply Antenna Bias Vo 2 85V 5 voltage Current lt 80mA 21 V RTC 3V3 II Backup voltage supply DC 2 5 4 3 6V Current lt 10uA 22 RESET I Reset Active low Vin gt 2 3V V lt 0 8V 23 N C 24 N C 25 GPIO4 I O General purpose I O 1 995V lt V lt 3 15V 0 3V ZV 0 855V 2 375V lt Voy S2 85V Voz lt 0 715V 26 GPIOO I O General purpose I O 1 995V lt V lt 3 15V 0 3V lt V 0 855V 2 375V lt Voy S2 85V Vor 0 715V 27 N C 28 N C 29 PPS O One pulse per second 2 375V lt Voy lt 2 85V Vor lt 0 715V 30 GND G Ground Reference Ground 31 V TMC 3V3 II DC Supply Voltage input DC 3 3V 5 V_GPS_3V3 3 3V DC power Input This is the DC power supply input pin for GPS system It provides v
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