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Table of Contents
Summary of Contents for i-Lotus RX Oncore
- Page 2 The information contained in this document is for use in acceptance of the i-Lotus terms and conditions, and may be subject to change without notice. This information can be downloaded from www.ilotus.com.sg. This documentation does not represent a commitment or warranty on the part of i-Lotus.
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Page 3: Table Of Contents
Contents Page Introduction ..................................1 Overview ................................1 Key Features ................................. 1 Performance Specifications ............................2 Hardware Overview ................................. 4 Overview ................................5 Feature Summary ..............................5 Hardware Interface Overview ..........................6 Power Modes ................................. 6 3.4.1 Tracking ................................. 6 3.4.2 Sleep mode ................................ - Page 4 11.3 RF Shielding ................................ 22 11.4 RoHS Consideration ............................23 11.5 SMT Reflow Profile .............................. 23 Module Packaging ................................24 12.1 Tape-and-reel Packaging ............................. 24 12.2 Carrier Tape Details ............................. 25 12.3 Plastic Reel Detail ..............................26 Handling, Shipment & Storage ............................27 13.1 Handling................................
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Page 5: Introduction
Introduction 1.1 Overview The RX Oncore is a high performance GPS receiver featuring the ALL NEW Smart-StartTM Technology and supporting AGPS and SBAS augmentation systems. With a sensitivity of up to -159 dBm, this industrial grade receiver features Auto-Startup and is capable of tracking 16 satellites simultaneously. This cost effective solution is custom designed to be applied in an extensive variety of GPS applications where superior performance, precise location, reliability and easy integration are paramount. -
Page 6: Performance Specifications
Performance Specifications PARAMETERS SPECIFICATIONS General Characteristics Receiver Architecture 16 Channels L1 1575.42 MHz C/A Code (1.023 MHz chip rate) Code plus carrier tracking (carrier aided tracking) Signal Tracked L1, C/A Code, AGPS, SBAS (WAAS, EGNOS, MSAS) Tracking Capability 16 simultaneous satellite vehicles Dimensions Length 17.0 mm... - Page 7 Antenna Sense Circuit Output Sentences Latitude, longitude, height, velocity, heading, time NMEA 0183 (GGA, GLL, GSA, GSV, RMC, VTG, ZDA) Commands Supported STM NMEA i-Lotus NMEA Environmental Characteristics Operating Temperature -40 to +85⁰C Storage Temperature -40 to +105⁰C Humidity (Moisture)
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Page 8: Hardware Overview
Hardware Overview Below is a simplified functional block diagram of the RX Oncore receiver. Active Antenna Antenna RX Oncore Module RF Front-End RF Circuitry SAW Filter RF Gnd Clock Generator Antenna Protection & Sensing Circuitry Fault TCXO Antenna Sensing Circuit Digital Gnd Fig 3.1... -
Page 9: Overview
By combining the ARM7TDMI microcontroller core with on-chip Flash and RAM, 16-Channel correlator DSP, RF Front-end and an extensive range of interfaces on a single module solution, the RX Oncore provides a highly- flexible and cost-effective solution for any GPS application. -
Page 10: Hardware Interface Overview
Wake up procedure: send any command and wait for device response. 3.4.1 Tracking Upon power up, the RX Oncore will run in Full Power Mode, and will immediately search for all visible satellites available. Document Number: 403 – GPS – 070... -
Page 11: Sleep Mode
The RX Oncore can only be toggled between Full Power Mode and Standby Mode by pulling the hardware control on the WAKEUP pin. When the RX Oncore is in Full Power Mode, it can be set to Standby Mode by pulling the hardware control on the WAKEUP pin LOW. -
Page 12: Inbuilt Module Information
<%d> = 137 for MTSAT 2 3.8 NMEA Protocol Support The RX Oncore Positioning Receiver firmware supports the NMEA 0183 format for GPS data output. Output of data in the NMEA-0183 standard format allows a direct interface via the serial port to electronic navigation instruments that support the specific output messages. -
Page 13: Module Pin Layout
Module Pin Layout The RX Oncore receives electrical power and input/output signals (including RF_in) through an array of 54 gold pads. Below are illustrations of the pin layout, orientation, and numbering. It is recommended that the user solder the 16 ground pads in the center. -
Page 14: Pin Definition
Pin Definition Tech Name Function Type SDA2 DDC Data SCL2 DDC Clock TXD1 Serial Port RxD1 Serial Port NC/VDDIO Supply Voltage Supply Voltage Ground (Digital) VCC_OUT Out Voltage Reserved/MISO SPI MISO Reserved RESET_N Reset V_BCKP Backup Voltage Supply Reserved Reserved Reserved Ground Ground... - Page 15 10 = SPI,11 = UART (Default) Interface Select USB Reset 0 = Reset, 1 = Nomal (Default) Firmware Firmware Reflash Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Table 5.1 Pin Definition Document Number: 403 –...
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Page 16: Mechanical Dimensions
Mechanical Dimensions Fig 6.1 Mechanical Dimensions Document Number: 403 – GPS – 070 Page | 12... -
Page 17: Packaging Detail
Packaging Detail Fig 7.1 Packaging Dimensions Document Number: 403 – GPS – 070 Page | 13... -
Page 18: Electrical Specifications
8.1 VCC VCC is the main power supply of the RX Oncore. An input voltage of 3.3V must be connected to the VCC pin (pin 6) to supply all the power requirements of the module. See Fig. 1. This is also being fed back to the VCC_OUT pin (pin 8). -
Page 19: Vbatt
8.2 VBATT Fig 8.2 VBATT voltage input VBATT is a 1.8V input that ensures the RTC, TCXO and the Wakeup Controller remains powered and active in the event of a failure in VCC Power Supply. Document Number: 403 – GPS – 070 Page | 15... -
Page 20: Antenna Circuitry
Antenna circuitry The RX Oncore is able to support both passive and active antennas. It receives the L1 band signals at frequency 1575.42 MHz via the RFIN pin. When designing the RF portion of any application with our module, the following considerations are necessary: All PCB trace from RFIN pin is required to have 50 ... -
Page 21: Gps Antenna Detection
GPS Antenna detection To support active GPS antenna (5V), V connected to 3~5V supply. RX Oncore supports 3V or 5V active antenna only. To support passive GPS Antenna, tie V to GND When short circuit was detected, the voltage supply to the antenna will be automatically shut down. -
Page 22: Sbas
The SBAS signal is acquired and elaborated by the RX Oncore receiver in two phases: ... -
Page 23: Available Sbas Satellites
The ionosphere data are stored in Iono DB by using the SBAS Iono Correction module to elaborate the SBAS message. The data related to the satellite correction (fast/slow/clock correction) are elaborated by the SBAS Satellite Correction module and then stored in Satellite DB. Every 30 seconds the Correction Generator module gets data from the database and elaborates them to provide the total correction for every GPS satellite by using a GPS library function. -
Page 24: Supported Commands
$PSTMSBASSAT – Change the SBAS Satellite PRN ID 10.3 Effectiveness With the implementation of SBAS functionalities in the RX Oncore module, the positional accuracy is able to be improved upon drastically. The following 2 figures show the improvement of the GPS position with SBAS versus non-SBAS using the same RX Oncore module. - Page 25 In United States of America, using prn 122: Fig 10.3 SBAS USA effectiveness Document Number: 403 – GPS – 070 Page | 21...
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Page 26: Module Installation Considerations
11.3 RF Shielding The RF circuitry sections on the RX Oncore are surrounded with an RF dam to provide some protection against potential interference from external sources. When a design calls for the RX Oncore to be near or around RF sources such as radios, switching power supplies, microprocessor clocks, etc., it is recommended that the RX... -
Page 27: Rohs Consideration
RX Oncore will be given upon request. 11.5 SMT Reflow Profile The RX Oncore module is a surface mount device. It has the capability to be manually soldered or mounted using a Solder Reflow Process. Below is the recommended lead Free Solder Reflow Profile. -
Page 28: Module Packaging
The following chapter describes the packaging details of RX Oncore module. 12.1 Tape-and-reel Packaging The RX Oncore module is most commonly delivered in Tape-and-Reel form factor. This approach simplifies the handling of semiconductors for the automated circuit board assembly systems. Each reel contains a maximum of 500pcs of RX Oncore modules, which enables the pick-and-place automated machines reloaded less frequently. -
Page 29: Carrier Tape Details
12.2 Carrier Tape Details Fig 12.2 Carrier tape dimensions NOTES: 1) CARRIER TAPE MATERIAL: HIGH IMPACT POLYSTYRENE, CONDUCTIVE, BLACK 2) DRAWING UNITS: IN MM. 3) DIMENSION GENERAL TOLERANCE: ±0.10mm UNLESS OTHERWISE SPECIFIED. 4) THE MAXIMUM CUMULATIVE TOLERANCE IS ±0.20mm FOR “10” SPROCKET HOLE PITCH Document Number: 403 –... -
Page 30: Plastic Reel Detail
12.3 Plastic Reel Detail Fig 12.3 Reel dimensions COLOUR MATERIAL (WIDTH (REEL SIZE) (HUB SIZE) SIZE) HIGH Ø330.00m Ø100.00m IMPACT 32.00mm 21.10mm 13.00mm 2.00mm 2.20mm 90° WHITE POLYSTYR (13”) (4”) Document Number: 403 – GPS – 070 Page | 26... -
Page 31: Handling, Shipment & Storage
DO NOT touch the RX Oncore module by the pins or leads unless it is properly grounded since most ESD damage is done at these points. -
Page 32: Shipment
13.2 Shipment: The RX Oncore modules are delivered on tape-and-reels in a hermetically sealed package to prevent moisture intake and protect against electrostatic discharge. A “Caution Label” is pasted to the reel to define the handling requirements and shelf life. A “Product Label” (with MSL level) is pasted on reel to describe the product information. - Page 33 Diagram below shows the dimension of pizza box. Fig 13.3 Box dimensions Each carton box contains of 4 pizza box. A carton box will be sealed with “RPG” tape at both top and bottom side. Fig 13.4 Carton dimensions Document Number: 403 – GPS – 070 Page | 29...
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Page 34: Storage
Storage 13.3 As shown on the “Caution Label”, the shelf life is 12 months at <40°c and <90% Relative Humidity (RH). Fig 13.5 Caution label Document Number: 403 – GPS – 070 Page | 30... -
Page 35: Reference Design
14 Reference Design Fig 14.1 Reference design Document Number: 403 – GPS – 070 Page | 31... -
Page 36: Hardware Recommendations
15 Hardware Recommendations 15.1 Oncore Silver GPS Active Antenna Oncore Silver GPS Active antenna is the qualified and recommended GPS active antenna for use with the RX Oncore receiver. The small footprint, low profile package and the shielded LNA (low noise amplifier) offer significantly enhanced performance while operating in a variety of GPS environments. -
Page 37: Technical Specifications
15.2 Technical Specifications Table 15.1 Oncore Silver GPS Active antenna Document Number: 403 – GPS – 070 Page | 33... -
Page 38: Block Diagram
15.3 Block Diagram Fig 15.2 Block Diagram of GPS Active Antenna GPS (Global Positioning System) is a satellite-based navigation system. In an unobstructed clear view of the sky, GPS works anywhere in the world, and 24 hours a day. GPS is developed and operated by the government of United States. Under the policy of the government, the degradation in accuracy shall occur without prior warnings, and sometimes satellites don’t transmit signal due to adjustment, test, and orbital revision. -
Page 39: Antenna Gain Pattern
15.4 Antenna Gain Pattern The sensitivity of an antenna as a function of elevation angle is represented by the gain pattern. Some directions are much more appropriate for signal reception than others, so the gain characteristics of an antenna play a significant role in the antenna's overall performance. A cross- sectional view of the antenna gain pattern along a fixed azimuth (in a vertical cut) is displayed in the following figure. - Page 40 Fig 15.4 Active antenna gain pattern Document Number: 403 – GPS – 070 Page | 36...
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Page 41: Mechanical Dimensions
15.5 Mechanical Dimensions All dimensions are in mm and are for reference purposes only. Fig 15.5 Active antenna dimensions 15.6 Antenna Placement When mounting the Hawk antenna module, it is important to remember that GPS positioning performance will be optimal when the antenna patch plane is level with the local geographic horizon, and the antenna has full view of the sky ensuring direct line-of-sight to all visible satellites over head. -
Page 42: Ordering Information
16 Ordering Information The RX Oncore module can be ordered using the following part number: IL-GPS-0070-B The RX Oncore Evaluation Kit can be ordered using the following part number: IL- GPS-EVK-0070-UA (UART/USB) IL- GPS-EVK-0070-UB (USB ONLY) Document Number: 403 – GPS – 070...