Intel C2518 FH8065501516710 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

214

Order Number: 330061-002US

The SoC customer assigns their own unique six-byte MAC Address for each LAN Port. 

The EEPROM has three 16-bit word locations defined for each of the four LAN Ports. The 

“Ethernet Address” three-word locations are shown in 

. The six-byte MAC 

Address is programmed to the EEPROM as shown in this example, where the desired 

MAC Address for LAN Port 2 is 00-A0-C9-00-00-03:

Word C0h = A000h
Word C1h = 00C9h
Word C2h = 0300h

When installed on a board, the contents of the EEPROM are not accessible to the 

customer software in the GbE Controller Memory-Mapped I/O (MMIO). Intel does 

provide a software tool for customers to view the EEPROM contents. Contact the local 

Intel sales representative. EEPROM contents are also visible in registers loaded into 

driver space.

The GbE Controller hardware initializes and configures the controller using the contents 

of the EEPROM when various state and reset conditions occur. These conditions are 

controlled by Intel and are not provided in customer documentation.

Two basic types of VLANs are supported:

• Tagged VLANs are based on the IEEE 802.1Q specification. Each packet has a 

4-byte tag added to the packet hearer. The switch must support IEEE 802.1Q 

tagging and be properly configured. Check your switch documentation for the 

correct switch configuration.

• Untagged or Port-based VLANs are statically configured on the switch. They are 

transparent to connected devices.