I211-AT Datasheet, PDF (2/5 Pages) Intel Corporation – Low-power, small-footprint, single-port gigabit network connectivity with advanced performance features.

the performance on multi-core proces-
sor designs. Advanced interrupt-handling
features to manage multiple interrupts
simultaneously, combined with intelligent
filtering, ordering, and directing of packets
to specific queues and cores, enables load-
balancing the network traffic flows to im-
prove throughput in multi-core platforms.
Other performance-enhancing features
include IPv4 and IPv6 checksum offload,
TCP/UDP checksum offload, extended Tx
descriptors for more offload capabilities,
up to 256 KB TCP segmentation (TSO v2),
header splitting, 40 KB packet buffer size,
and 9.5 KB Jumbo Frame support.
Advanced Features
IEEE 1588/802.1AS Time Stamping
The Intel® Ethernet Controller I211-AT sup-
ports hardware-based IEEE 1588/802.1AS
for precision time synchronization to
enable high-precision timesynchronization
over the Ethernet.
Software Definable Pins
Four Software Definable Pins (GPIOs)
enable additional design customization for
embedded platforms. SDPs can be used
for IEEE 1588 auxiliary device connec-
tions, enable/disable of the device, and for
other miscellaneous hardware or soft-
ware-control purposes. These pins can
be individually configured to act as either
standard inputs, General-Purpose Inter-
rupt (GPI) inputs or output pins, as well as
the default value of all pins configured as
outputs.
Energy Efficient Ethernet (EEE)
The Intel® Ethernet Controller I211-AT sup-
ports the IEEE 802.3az EEE standard so
that during periods of low network activ-
ity, EEE reduces the power consumption
of an Ethernet connection by negotiating
with the switch port to transition to a low
power idle (LPI) state.
This reduces power to approximately
50% of its normal operating power-saving
power on both the network and the
switch ports. When increased traffic is
detected, the controller and the switch
quickly come back to full power to handle
the increased traffic. EEE is supported for
both 1000BASE-T and 100BASE-TX.
The Intel® Ethernet Controller I211-AT has
excellent thermal characteristics. The In-
tel® Ethernet Controller I211-AT supports
commercial temperature ranges of 0 °C to
70 °C and operates at less than 730 mW.
Flexible Design Configurations
With its small size, reduced power control
circuitry, and integrated NVM capabil-
ity, this controller can be used for small
form-factor embedded designs as well as
consumer devices.
Packaged in an Environmentally
Friendly Design
The Intel® Ethernet Controller I211-AT is
low halogen and completely lead-free in
its silicon and package design to reduce
the potential for environmental impact.
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