Ultra‐Link Processing™ eNode User Manual Document Number: Version: Date: 010‐0002‐00 V1.1 02/29/2010 The information disclosed in this document is proprietary to On‐Ramp Wireless, and is not to be used or disclosed to unauthorized persons without the written consent of On‐Ramp Wireless. The recipient of this document shall respect the security of this document and maintain the confidentiality of the information it contains.
eNode User Manual ‐ 010‐0002‐00 Document Control History Version 1.0 1.1 Date 2/12/10 2/29/10 Author ORW ORW Remarks Initial Release Updated with certification comments (Sect 4.3 and 4.4) On‐Ramp Wireless, Inc.
eNode User Manual ‐ 010‐0002‐00 3 1 TABLE OF CONTENTS 1 TABLE OF CONTENTS ..............................................................................................................................3 1.1 List of Figures .................................................................................................................................................... 5 1.2 List of Tables ...............................................................................................................
eNode User Manual ‐ 010‐0002‐00 5.4.1 5.4.2 5.5 4 Overview ............................................................................................................................................................... 15 Requirements........................................................................................................................................................ 15 Notes and Recommendations...............................................................................................
eNode User Manual ‐ 010‐0002‐00 1.1 5 LIST OF FIGURES Figure 1 On‐Ramp Wireless ULP Network ............................................................................................................................... 7 Figure 2 eNode Mechanical Dimensions ................................................................................................................................ 12 Figure 3 eNode SPI interface ........................................................................................
eNode User Manual ‐ 010‐0002‐00 2 2.1 6 SCOPE WHAT DOES THIS DOCUMENT COVER? This document describes the On‐Ramp Wireless Ultra‐Link Processing™ (ULP) eNode. It describes the use of the eNode within a ULP wireless packet data network and the hardware and software interfaces of the device. 2.2 WHO SHOULD USE THIS MANUAL? Customers integrating On‐Ramp’s eNode module in to their sensor and location tracking systems, referred to as Hosts in this document.
eNode User Manual ‐ 010‐0002‐00 3 7 INTRODUCTION The ULP wireless packet data network, comprised of eNodes and Access Points operates at a breakthrough receive sensitivity of ‐142 dBm. This dramatic increase in receive sensitivity allows for a wireless range of 2,000 miles in free space and 25x the range (600x the coverage) of typical wireless sensor systems while maintaining a small and low‐cost form factor with multi‐year battery operation.
eNode User Manual ‐ 010‐0002‐00 4 8 APPROVALS The eNode has been designed to meet regulations for world‐wide use. 4.1 FCC This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
eNode User Manual ‐ 010‐0002‐00 4.4 9 ANTENNAS This device has been designed to operate with the antennas listed below, and having a maximum gain of 5 dB. Antennas not included in this list or having a gain greater than 5 dB are strictly prohibited for use with this device. The required antenna impedance is 50 ohms. 5 dB omni‐directional antenna 2 dB omni‐directional antenna 1 dB omni‐directional antenna On‐Ramp Wireless, Inc.
eNode User Manual ‐ 010‐0002‐00 5 10 ENODE OVERVIEW AND INTERFACES The eNode platform provides ULP modem functionality on the client side. The eNode platform handles PHY & MAC layers (L1 and L2) for the ULP technology. The eNode platform supports interfacing over Serial Peripheral Interface (SPI). The eNode easily integrates with Sensor or Locating tracking system using the software and hardware interfaces supported. The eNode acts as the slave device and expects the host board to act as master. 5.1 5.
eNode User Manual ‐ 010‐0002‐00 5.1.
eNode User Manual ‐ 010‐0002‐00 5.1.3 5.1.4 12 ELECTRICAL CHARACTERISTICS Module signals are defined as CMOS compatible 3V levels. The actual 3V levels could be between 3.0V and 3.6V. The eNode board converts the input voltage (VBATT) to its own required voltage levels. The input voltage range is 2.4V to 5.5V. The board can consume up to two (2) watts during transmission, its maximum power mode.
eNode User Manual ‐ 010‐0002‐00 5.2 13 SOFTWARE INTERFACE On‐Ramp’s eNode platform’s Software Interface includes the node resident SPI driver for the Interface Hardware and the node resident messaging application. While the driver enables the hardware for data transfer, the messaging application implements user level messages which enable the host to control the behavior of the node.
eNode User Manual ‐ 010‐0002‐00 5.3.2 14 HOST INTERFACE PROTOCOL On‐Ramp’s ULP eNode’s host interface supports reliable transfer of messages between the host and eNode over SPI. To support this functionality: Explicit ‘Connect’ and ‘Disconnect’ messages are supported. Each host‐to‐node message is acknowledged. This is useful in reliability and also for back‐pressure, where the host needs to slow down or stop sending messages to the eNode.
eNode User Manual ‐ 010‐0002‐00 15 The On‐Ramp host SPI master driver uses a messaging protocol that is active only after the host has completed an arbitration sequence. This allows the node to pass traffic across the SPI interface to both a host and a non‐ host device. 5.4 SOFTWARE UPGRADE PROTOCOL 5.4.1 OVERVIEW The node supports upgrading of its software via the host SPI interface.
