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Ethernet Location

Helios64 has 2x BASE-T Ethernet interfaces :

  • LAN 1 : 1000BASE-T (1 Gbit/s)
  • LAN 2 : 2.5GBASE-T (2.5 Gbit/s)

LAN 1 is the native Gigabit Ethernet interface from SoC RK3399. The interfaces is exposed through the Ethernet transceiver RTL8211F connected to RK3399 via RGMII.

Ethernet 1GbE Diagram

LAN2 is the Multigigabit (2.5Gb) Ethernet interface provided through Realtek RTL8156 controller which is an USB3.0 to LAN bridge. The controller is connected to RK3399 via VL815 USB 3.0 Hub.

Ethernet 2.5GbE Diagram


Both Ethernet interfaces supports the following features :

  • Transfer Rate Auto-Negotiation
  • Full-duplex and Half-duplex operation
  • IEEE 802.3az Energy Efficient Ethernet
  • IEEE 802.1Q VLAN tagging
  • Wake-on-LAN (WOL)
  • Crossover Detection & Auto-Correction
  • Automatic Polarity Correction

About MAC address

Each Helios64 unit comes with a unique MAC address for each Ethernet interfaces. These MAC addresses, allocated and programmed during manufacturing process, comes from a MAC Address Block assigned to Kobol Innovations Pte. Ltd. by the IEEE Registration Authority.

The following MAC Address Block Medium (MA-M) has been allocated to us :

28-bit Base Value EUI-48 Address Block
64-62-66-D 0-00-00 through F-FF-FF

Last update: April 20, 2020