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Dust Networks

LTP5903-WHR Datasheet

6.0

SmartMesh WirelessHART Intelligent Networking

Platform

The SmartMesh WirelessHART LTP5903-WHR embedded network manager is built upon Dust Networks’ Intelligent

Networking Platform, which provides dynamic network optimization, deterministic power management, intelligent routing,

and bandwidth flexibility to achieve the carrier class data reliability, and ultra-low power and ease of use required for

industrial automation applications.

6.1

Dynamic Network Optimization

Dynamic network optimization allows the LTP5903-WHR to address the changing RF requirements in harsh industrial

environments resulting in a network that is continuously self-monitoring and self-adjusting. The LTP5903-WHR manager

performs dynamic network optimization based upon periodic reports on network health and link quality that it receives from

the network motes. The manager uses this information to provide performance statistics to the application layer and

proactively solve problems in the network. Dynamic network optimization not only maintains network health, but also allows

the LTP5903-WHR to deliver deterministic power management.

6.2

Deterministic Power Management

Deterministic power management balances traffic in the network by diverting traffic around heavily loaded motes (for

example, motes with high reporting rates). In doing so, it reduces power consumption for these motes and balances power

consumption across the network. Deterministic power management provides predictable maintenance schedules to prevent

down time and lower the cost of network ownership. When combined with field devices using Dust Network’s industry-

leading low power radio technology, deterministic power management enables over a decade of battery life for network

motes.

6.3

Intelligent Routing

Intelligent routing provides each packet with an optimal path through the network. The shortest distance between two points

is a straight line, but in RF the quickest path is not always the one with the fewest hops. Intelligent routing finds optimal

paths by considering the link quality (one path may lose more packets than another) and the retry schedule, in addition to the

number of hops. The result is reduced network power consumption, elimination of in-network collisions, and unmatched

network scalability and reliability.

6.4

Bandwidth Flexibility

Efficient use of network resources enables Dust Networks to deliver bandwidth flexibility—the ability to assign different

levels of bandwidth to satisfy unique throughput and latency requirements. Bandwidth flexibly addresses the range of latency

and throughput needs of industrial automation applications such as request/response, fast file transfer, and alerting.

7.0

Interfaces

The LTP5903-WHR is designed for ease of integration by providing multiple data ports and well-defined software APIs.

Section 7.1 describes the LTP5903-WHR data ports, LEDs, and switches Section 7.1.5 describes the software functions that

are available through the data ports.

7.1

Hardware Interfaces

Table 15 Hardware Interface Summary

Port

Description

Pins

Ethernet

10/100Base-T Ethernet

RX_P, TX_P, RX_N, TX_N, RX_CT, TX_CT, nACT_LED, nLINK_LED

Serial 1

UART 5-pin

S1_TX, S1_RX, GND

Serial 2

UART 9-pin

S2_TX, S2_RX, S2_RTS, S2_CTS, GND

LED Status Indicator

Status indicators

nLED_SUB, nLED_RADIO, nLED_JOIN, RST

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