Adding physical Ethernet ports the easy way

February 29, 2016 // By Julien Happich
This month, Segger is giving away ten embOS/IP switch boards, worth 98 Euros each, for EETimes Europe's readers to evaluate the company's embedded IP stack embOS/IP Tail Tagging feature.

Micrel/Microchip has developed switches which can expand one Ethernet port into 1+n fully independent ports, supported by the so-called Tail Tagging mode. This enhancement establishes a virtual Multiport when only one physical Ethernet port is available on the CPU - by choosing another PHY.

The embOS/IP switch board features an NXP Kinetis K66 CPU clocked at 180 MHz, with 256 KB SRAM as well as 2 MB Flash memory, the Micrel/Microchip switch PHY KSZ8794CNX with three usable Ethernet ports and an on-board version of Segger’s popular J-Link debug probe for quick and easy debug access to the Kinetis core MCU.

The embOS/IP Switch board is powered by the USB device connector (B-type connector). Current consumption drawn depends on the configuration and connected Ethernet links, but the board will only draw 140mA in idle mode.

More information at


And last month’s winners are…

In our previous reader offer, Ambiq Micro was giving away five of its ‘Apollo EVB’ evaluation boards , worth $249 each, for eeNews Europe's readers to win.

Lucky winners include Mr F. Teixeira from Portugal, Mr M. Rosier from the UK, Mr J. Pauve from Finland, Mr M. De Biase from Italy and Mr J. Benko from Belgium.