Gigabit Ethernet Interface - GE Mini COM Express 10 Hardware Reference Manual

4.2 Gigabit Ethernet Interface

System Architecture
For public disclosure
The mCOM10-L1500 provides one 10/100/1000 Mbps MDI through an Intel I210
Gigabit Ethernet Controller. The I210 controller supports the following features:
• Jumbo frames up to 9.5 KB
• 802.1q VLAN
• 64-bit addressing
• IEEE 1588 time synchronization (per-packet timestamp)
The I210 MDI port is wired directly to the COM Express connector. Isolation should be
implemented on the carrier board. Three status LED outputs from the I210 are decoded in
the FPGA to produce four Ethernet link and activity indicators connected to the COM
Express connector.
Note An attached 512-KB serial Flash is provided for the I210 to store Ethernet
configuration data, such as the MAC address, along with optional ROM modules, such as
a PXE driver or UEFI network driver.
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