Enhanced industrial Ethernet switches feature IEEE 1588-2008 precision protocol

26-08-2015 | Microchip Technology | Semiconductors

Microchip has added the LAN9353, LAN9354 and LAN9355 three-port, 10/100
Industrial Ethernet switches to its reliable, high-quality, and
high-performance portfolio of Ethernet solutions, which includes Ethernet
switches, controllers, bridges and PHYs.

Featuring the IEEE 1588-2008 Precision Time Protocol (PTP) standard for
clock accuracy in the sub-nanosecond range, these highly integrated Ethernet
switches offload both synchronisation and communications processing from the
host CPU. Developers can also take advantage of advanced features such as
Transparent Clocking, which improves system accuracy. Additional features
designed to reduce overall system power consumption include Energy Efficient
Ethernet (IEEE 802.3az), and Wake On LAN. These switches enable the
development of advanced hardware in the rapidly growing Industrial Ethernet
market, including automation, motion-control, embedded, automotive,
security/surveillance and telecommunications applications.

The LAN9353/4/5 10/100 Ethernet switches support widely adopted industry
standards, such as MII (Media Independent Interface), RMII (Reduced Media
Independent Interface), SMI (Serial Management Interface), Turbo MII, I2C
and SPI/SQI communication interfaces, along with digital I/O. This gives
system designers the flexibility to select from a wide range of
microcontrollers, Systems-on-Chip (SoCs) or processors to interface with
this new family of switches.

Ethernet connectivity has become ubiquitous in communications and networking
products. This well-understood technology provides a robust link to ensure
reliable communication between devices in a network. To ensure easy
installation and network expansion, as well as minimal maintenance, these
switches also support 100BASE-FX fibre and copper, along with cable
diagnostics that enable system designers and their end-users to determine
cable opens, shorts, length to fault and cable length, providing a
cost-effective way to extend Ethernet networks over long distances.

To enable development with the LAN9353/4/5 three-port 10/100 Ethernet
Switches, three Microchip evaluation boards were also announced today that
support various system architectures. The hardware systems demonstrate how
to interface with the switches through basic input/output connections, or
with microcontrollers such as the 32-bit PIC32MX family via serial

Each of these new evaluation boards is also supported by a Software
Development Kit (SDK), which enables developers to immediately start device
evaluation, familiarise themselves with features, and begin building
solutions for their applications. All three evaluation boards are available
now, says the company.

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