Linx-technologies TRM-915-DTS User Manual

TRM-915-DTS /TRM-915-DTS-BRZRF Transceiver Module Data Guide

– –– –14 15Conguration RegistersThe DTS Series module contains several registers that control its configuration and operation. The register se

– –– –16 17Writing to RegistersWriting to a volatile register is nearly instantaneous. Writing to a non-volatile register typically takes 16ms

– –– –18 19DTS Series RF ChannelsChannel LP Mode DTS Mode Channel LP Mode DTS Mode0 902.271 902.971 42 914.900 N/A1 902.572 903.723 43 915.201

– –– –20 21UART Data Rate - Address = 0x4E; NV Address = 0x03The UART data rate is set by the regDATARATE (addr 0x4E) register. The default UA

– –– –22 23CRC Control - Address = 0x53; NV Address = 0x08The DTS Series protocol includes a Cyclic Redundancy Check on the received packets t

– –– –24 25CSMA Enable - Address = 0x56; NV Address = 0x0BCarrier-Sense Multiple Access (CSMA) is a best-effort delivery system that listens t

– –– –26 27Sleep Control - Address = 0x58; NV Address = 0x0DSetting this register to 0x01 places the module into Sleep mode and 0x02 places th

– –– –28 29Release Number - NV Address = 0x78This register indicates the firmware release number for the module. Figure 38 translates the relea

– –– –30 31Helpful Application Notes from LinxIt is not the intention of this manual to address in depth many of the issues that should be con

– –– –32 33Pad LayoutThe pad layout diagram in Figure 44 is designed to facilitate both hand and automated assembly.Board Layout GuidelinesThe

Table of Contents 1 Description 2 Ordering Information 2 Absolute Maximum Ratings 3 Electrical Specications 5 Pin Assignments 5 Pin Description

– –– –34 35Microstrip DetailsA transmission line is a medium whereby RF energy is transferred from one place to another with minimal loss. Thi

– –– –36 37Production GuidelinesThe module is housed in a hybrid SMD package that supports hand and automated assembly techniques. Since the m

– –– –38 39General Antenna RulesThe following general rules should help in maximizing antenna performance.1. Proximity to objects such as a u

– –– –40 41Common Antenna StylesThere are hundreds of antenna styles and variations that can be employed with Linx RF modules. Following is a

– –– –42 43Regulatory ConsiderationsWhen working with RF, a clear distinction must be made between what is technically possible and what is le

DisclaimerLinx Technologies is continually striving to improve the quality and function of its products. For this reason, we reserve the right to mak

– –1DescriptionThe DTS Series combines a state-of-the art low power wireless transceiver with a powerful multipoint-to-multipoint protocol control

– –– –2 3DTS Series Transceiver SpecificationsParameter Symbol Min. Typ. Max. Units NotesPower SupplyOperating Voltage VCC2.7

– –– –4 5Figure 4: Electrical SpecificationsDTS Series Transceiver SpecificationsParameter Symbol Min. Typ. Max. Units NotesAdjacent Channel Rej

– –– –6 7Theory of OperationThe DTS Series transceiver is a low-cost, high-performance synthesized FSK transceiver. Its wideband operation giv

– –– –8 9Digital Transmission System (DTS)The DTS Series transceiver takes advantage of the DTS digital spread spectrum provision in FCC part

– –– –10 11Reset to Factory DefaultIt may be necessary to reset the non-volatile registers to their factory defaults. To reset the module, hol

– –– –12 13The UART InterfaceThe module uses a standard UART interface for both data to be sent over the air and for configuring the module. Th