Pyxos FT Network Chip

The Pyxos platform is the embedded control networking platform introduced by Adesto for stand-alone or LonWorks extending networking applications inside machines and in high-performance systems such as sensor and actuator I/O busses.

Key Features

  • Low-cost embedded control networking chip for use inside machines and for extending control networks to high-performance sensor networks
  • Miniaturized form factor fits into almost every sensor and actuator
  • Extensible architecture for seamless integration with LonWorks® control networks and the Internet
  • Self-organizing feature configures the network without special tools or skilled labor
  • High speed deterministic operation (≤ 25ms response time)
  • 5kbps network transmission speed
  • Polarity insensitive, free topology, twisted pair wiring
  • Link Power allows sending communication and power over same pair of wires
  • Robust performance ideal for industrial and consumer products and applications including automotive, buildings, office machines, and transportation
  • Exceptional data integrity with Forward Error Correction and 18 bit packet CRC
  • Exceptionally high common mode noise and interference immunity
  • Network pins ESD protection to over 8kV HBM
  • -40°C to +85°C operating temperature range
  • 20 Pin QFN 5mm x 5mm package
  • RoHS-compliant

Tech Specs

Network Connections

Polarity-insensitive


Protocol

Deterministic TDMA protocol with automatic retries and CRC error


Response Time

(Reading and Writing ≤25ms scan time for up to 32 Points. Scan time is proportionally faster two 4-byte values in each scan) – with less Pyxos Points, e.g., 1.8ms for two Pyxos Points in the system


Data Integrity

Forward error correction of up to 2 bit errors per packet; 18 bit packet CRC


MAC ID

Built-in


Installation

Self-organizing network with automatic, hardwired, and manual service- pin methods


Maximum Pyxos Points per Pyxos Pilot

32


Transmission Speed

312.5 kilobits per second, fixed polling cycle


Pyxos Network Variables per Pyxos Pilot

Larger size PNVs can be definedper hosted Pyxos Point within total memory size available


LonWorks Network Variables per Pyxos Pilot

62 when using ShortStack, 4096 when using MIP


Network Wiring

Unshielded CAT-5 24AWG (0.5mm) and Belden 8471 16AWG (1.3mm) twisted pair wire; see Junction Box and Wiring Guidelines application note for cable details


Network Length in Free Topology

Free Topology (Single termination) :100m (328 feet) maximum total wire Bus Topology (Double termination): 400m (1312 feet) maximum; 0.3m (1 foot) maximum stub lengths


Link Power

Supports 24VAC or 24VDC link power with optional external components; Reference designs provided for both switching and linear power supplies Application Output Current: up to 100mA @ 3.3V DC


EMI

Designed to comply with FCC Part 15 Level A and EN55022 Level A


ESD

Designed to comply with 61000-4-2 Level 4 (contact – 8kV; air – 15kV)


ESD Human Body Model

(MIL-STD-883) 8kV(for pins NET_A and NET_B) – 8KV


Radiated Electromagnetic Susceptibility

Designed to comply with 61000-4-3 Level 3 (10Vrms)


Fast Ransient/Burst Immunity

Designed to comply with 61000-4-4 Level 4 (2kV)


Surge Immunity

Designed to comply with 61000-4-5 Level 3 (2kV)


Conducted RF Immunity

Designed to comply with 61000-4-6 Level 3 (10Vrms)


Common Mode Range (0 – 60Hz)

277Vrms with Transformer-isolated coupling +/-40V with Non-isolated/Grounded coupling


I/O

4 digital I/Os and 1 digital input without a microcontroller, 8mA drive, 5V tolerant for LEDs, digital I/O, and transistor


Pyxos Host Microcontroller Interface

SPI (Serial Peripheral Interface) Package  20 Pin QFN 5mm x 5mm package


Package

20 Pin QFN 5mm x 5mm package


Package

20 Pin QFN 5mm x 5mm package


Operating Voltage

3.3V ±10%


Operating Temperature

-40ºC to +85ºC


 

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