The Intel 82541ER Gigabit Ethernet Controller provides optimized Gigabit networking for PCI designs. This highly efficient controller, with enhanced power management, consumes less than 1.0W of power at Gigabit speeds. When no signal is detected on the wire, the controller reduces power consumption by “downshifting” to 100Mbps to 10Mbps and then powering down the physical- layer circuitry (PHY).
When a signal is detected, the controller automatically negotiates the connection to Gigabit, if available.
The Intel 82541ER combines Intel’s fifth-generation Gigabit MAC design with fully integrated state-of-the-art PHY technology, which meets or exceeds IEEE 802.3ab specifications for Bit Error Rate performance.