Accessing the phyBOARD-Regor Features
PHYTEC Messtechnik GmbH 2018 L-823e_2
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2.2.4
Ethernet Connectivity (X9)
Figure 11: Ethernet Interfaces at Connector X9
The Ethernet interfaces of the phyBOARD-Regor are accessible at dual RJ45 connectors X9A
(Ethernet 0) and X9B (Ethernet 1).
Both Ethernet interfaces are configured as 10/100Base-T networks. The LEDs for LINK
(green) and SPEED (yellow) indication are integrated in the connector. Both Ethernet
transceivers support HP Auto-MDIX, eliminating the need for a direct connect LAN or a
cross-over path cable. They detect the TX and RX pins of the connected device and
automatically configure the PHY TX and RX pins accordingly.
2.2.4.1
MAC Address
In a computer network such as a local area network (LAN), the MAC (Media Access Control)
address is a unique computer hardware number. For a connection to the Internet, a table is
used to convert the assigned IP number to the hardware’s MAC address.
In order to guarantee that the MAC address is unique, all addresses are managed in a
central location. The MAC address of the phyBOARD-Regor is saved on the CPU (AM335x).
