REB-1315LP Operational Manual REB-1315LP Operational Manual Version 1.6 2007/09/13 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. 1071, Chung Cheng Rd.
REB-1315LP Operational Manual Content 1. Introduction ............................................................................. 3 1.1 Product Applications....................................................... 3 1.2 Product Pictures.............................................................. 4 1.3 REB-1315LP Series Block Diagram................................ 5 1.4 REB-1315LP Technical Specification ............................. 6 1.5 Application Circuit..............................................
REB-1315LP Operational Manual 1. Introduction RoyalTek REB-1315LP small form factor board is the newest generation of RoyalTek GPS module. The 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 locator, speed camera detector and vehicle locator.
REB-1315LP Operational Manual 1.
REB-1315LP Operational Manual 1.3 REB-1315LP Series Block Diagram System block diagram description: a. External antenna. b. 4 Mega bits flash memory. c. 22 pin I/O pin.
REB-1315LP Operational Manual 1.4 REB-1315LP Technical Specification Impedance: :50Ω No Function Specification GPS receiver 1 Chipset 2 Frequency SiRF Star III, GSC3f/LP (Digital, RF in a single package) L1 1575.42MHz. 3 Code C.A. Code. 4 Channels 20 parallel 5 Chipset Sensitivity -159dBm 6 Chipset cold start 35 sec @ open sky (avg.) 7 Chipset warm start 35 sec @ open sky (avg.) 8 Chipset hot start 1 sec @ open sky (avg.) 9 Reacquisition 0.
REB-1315LP Operational Manual 24 Humidity RoyalTek Confidential ≦95% 7
REB-1315LP Operational Manual 1.
REB-1315LP Operational Manual Note: (1) Ground Planes: These pin(18、20、21、22) should be connect to ground. (2) Serial Interface: (Ⅰ)The TXA pin is the serial output data. Default output GPS protocol. (NMEA sentence ). (Ⅱ). The RXA pin is the serial input data. Default output GPS protocol. (NMEA sentence) (Ⅲ) The TXB pin is the serial output data (Default Null) (Ⅳ) The RXB pin is the serial input data (Default Null). (3) Backup Battery: It’s recommended to connect a backup battery to V_RTC_3V3 pin.
REB-1315LP Operational Manual If you choice 3.3VSUB voltage then the power can use by different power supply.
REB-1315LP Operational Manual Recommend Layout PAD : TOP View RoyalTek Confidential 11
REB-1315LP Operational Manual Recommend paste mask pad Recommend paste mask pad is shift outside the layout pad 0.
REB-1315LP Operational Manual 1.
REB-1315LP Operational Manual 1.
REB-1315LP Operational Manual Pin defined: Pin Signal Name I/O Description 1 RXB I 2 TXB O 3 PPS O Characteristics 3.15 ≥ VIH ≥ 1.995V Serial port B 2.85V ≥ VOH ≥ 2.375V One pulse per 2.85V ≥ VOH ≥ 2.375V Serial port B - 0.3V ≤ VIL ≤ 0.855V VOL ≤ 0.715V VOL ≤ 0.715V second 4 TXA O Serial port A 2.85V ≥ VOH ≥ 2.375V 5 RXA I Serial port A 3.15V ≥ VIH ≥ 1.995V 6 GPIO[10] I/O General 3.15 ≥ VIH ≥ 1.995V 2.85V ≥ VOH ≥ 2.375V - 0.3V ≤ VIL ≤ 0.855V VOL ≤ 0.715V 3.15 ≥ VIH ≥ 1.995V 2.
REB-1315LP Operational Manual voltage 18 GND G Ground Reference Ground 19 RF_IN I GPS Signal 50 Ω @1.57542GHz input 20 GND G Ground Reference Ground 21 GND G Ground Reference Ground 22 GND G Ground Reference Ground VIN_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 reference ground . Boot Set this pin to high for programming flash.
REB-1315LP Operational Manual V_RTC_3V3 (Backup battery ) This is the battery backup input that powers the SRAM and RTC (Real Time Clock) when main power is removed. Typical current draw is 10uA. The supply voltage should be between 2.5V and 3.6V. ON_OFF (GPS Sleep Mode) This pin is triggered soft on/off request. Please shall only used to wake up chip. Control for hibernate. Please let it N.C. GPIO Functions Several I/Os are connected to the digital interface connector for custom applications.
REB-1315LP Operational Manual 2. Software Interface NMEA V3.0 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 .
REB-1315LP 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 Table 2-4 contains the values of the following example: $GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.
REB-1315LP Operational Manual GSV-GNSS Satellites in View Table 7 contains the values of the following example: $GPGSV, 2, 1, 07, 07, 79, 048, 42, 02, 51, 062, 43, 26, 36, 256, 42, 27, 27, 138, 42*71$GPGSV, 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 1 to 3 Messages Number1 1 Range 1 to 3 Satellites in View 07 Satellite ID 07 Channel 1(Range 1 to 32) Elevation
REB-1315LP Operational Manual E/W Indicator W Speed Over Ground 0.13 Course Over Ground 309.
REB-1315LP Operational Manual 3. GPS Receiver User’s Tip A. GPS signal will be affected by weather and environment conditions, so it is recommended to use the GPS receiver under less shielding environments to ensure GPS receiver has better receiving performance. B.
REB-1315 Operational Manual 4. Package Specification and Order Information Shipment Method: Tape and reel SMT type with stamp holes (22 holes) 5.
REB-1315 Operational Manual 6. Contact Royaltek C ontact: sales@royaltek.com H eadquarter: Address: 1071, Chung Cheng Rd., Suite 9F-1 Tao Yuan City, Taiwan TEL: 886-3-3569666 FAX: 886-3-3580050 W eb Site: http://www.royaltek.com W eb Site Customer Service: http://www.royaltek.com/contact 7. Revision History Title REB-1315LP GPS Receiver Module Doc Type Revision Number 0.1 0.2 0.3 1.