Echelon FT 3150 Smart Transceiver - Manual (Page 8)

Chapter 1 - Introduction
2 FT 3120/FT 3150 Smart Transceiver Data Book
Introduction
This manual provides detailed technical specifications on the electrical interfaces, mechanical interfaces, and
operating environment characteristics for the FT 3120
® and FT 3150 ® Smart Transceivers. This manual also provides
guidelines for migrating applications to an FT Smart Transceiver-based device using a LonBuilder ® or
NodeBuilder ® development tool.
In some cases, vendor sources are included in this manual to simplify the task of integrating FT Smart Transceivers
with application electronics.
There is a list of related documentation at the end of this chapter in the section Related Documentation. The
documents listed in that section can be found on the Echelon website (www.echelon.com) unless otherwise noted.
Audience
This manual provides specifications and user instructions for FT Smart Transceiver customers, and users of network
interfaces based on the FT Smart Transceivers.
Product Overview
The FT Smart Transceivers integrate a Neuron ® 3120 or Neuron 3150 network processor core, respectively, with a
free topology (FT) twisted-pair transceiver to create a low cost, smart transceiver on a chip. Combined with the
Echelon high performance FT-X1 or FT-X2 Communication Transformer, the FT Smart Transceivers set new
benchmarks for performance, robustness, and low cost. Ideal for use in L
ON W ORKS® devices designed for building,
industrial, transportation, home, and utility automation applications, the FT Smart Transceivers can be used in both
new product designs and as a means of cost reducing existing devices.
The integral transceiver is fully compatible with the TP/FT-10 channel and can communicate with devices using the
Echelon FTT-10A Free Topology Transceiver, and with the addition of suitable DC isolation capacitors, the LPT-10
Link Power Transceiver. The free topology transceiver supports polarity insensitive cabling using a star, bus, daisy-
chain, loop, or combined topologies. This frees the installer from the need to adhere to a strict set of wiring rules. Free
topology wiring reduces the time and expense of device installation by allowing the wiring to be installed in the most
expeditious and cost-effective manner. It also simplifies network expansion by eliminating restrictions on wire
routing, splicing, and device placement.
The FT 3120 Smart Transceiver is a complete system-on-a-chip that is targeted at cost-sensitive and small form factor
designs that require up to 4Kbytes of application code. The Neuron 3120 core operates at up to 40MHz, and includes
4Kbytes of EEPROM and 2Kbytes of RAM. The Neuron firmware is pre-programmed in an on-chip ROM. The
application code is stored in the embedded EEPROM memory and may be updated over the network. The FT 3120
Smart Transceiver is offered in a 32-lead SOIC package as well as a compact 44-lead TQFP package.
The FT 3150 Smart Transceiver includes a 20MHz Neuron 3150 core, 0.5Kbytes of EEPROM and 2Kbytes of RAM.
Through its external memory bus, the FT 3150 Smart Transceiver can address up to 58Kbytes of external memory, of
which 16Kbytes of external non-volatile memory is dedicated to the Neuron system firmware. The FT 3150 Smart
Transceiver is supplied in a 64-lead TQFP package.
The embedded EEPROM may be written up to 10,000 times with no data loss. Data stored in the EEPROM will be
retained for at least 10 years.
Three different versions of the FT Smart Transceivers are available to meet a wide range of applications and
packaging requirements. See the table below for product offerings and descriptions.