Echelon FTXL Manual de usuario descargar pdf (Pagina 16)

4 Introduction to FTXL

Figure 1. A Single-Chip L

ONWORKS Device

For a Neuron-hosted device that uses a Neuron Chip or Smart Transceiver, the

physical layer (layer 1) is handled by the Neuron Chip or Smart Transceiver.

The middle layers (layers 2 through 6) are handled by the Neuron firmware. The

application layer (layer 7) is handled by your Neuron C application program. You

create the application program using the Neuron C programming language in

either the NodeBuilder

Development Tool or the Mini EVK Evaluation Kit.

A LONWORKS Device with Two Processor Chips

Some LONWORKS devices run applications that require more memory or

processing capabilities than a single Neuron Chip or Smart Transceiver can

provide. Other L

ONWORKS devices are implemented by adding a transceiver to

an existing processor and application. For these applications, the device uses two

processor chips working together:

• An Echelon Smart Transceiver

• A microprocessor, microcontroller, or embedded processor in a field-

programmable gate array (FPGA) device, typically called the

host

processor

A L

ONWORKS device that uses two processor chips is called a

host-based

device,

which means that the device includes a Smart Transceiver plus a host processor.

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Echelon FTXL Manual de usuario Pagina 16