82562G Datasheet, PDF (12/44 Pages) Intel Corporation – Mbps Platform LAN Connect

82562G — Networking Silicon
3.1.2
Enhanced Tx Mode
The enhanced Tx mode speeds up the rise and fall times of the 100 Mb signal. This was done so the
82562G can have improved IEEE PHY conformance requirements over a more capacitive Analog
Front End (AFE); usually caused by long traces or differential switches that customers use, usually
on mobile platforms. However, running an 82562G device in enhanced mode increases the radiated
emissions seen from the LAN solution. The increase in radiated emissions may or may not impact
the DUT’s ability to pass regulatory requirements, as it will depend largely on the design of the
AFE. The enhanced mode should only be used when 100Base-TX rise/fall times cannot be met in
the normal 82562G mode. Consult an Intel representative if you are considering using this mode.
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Datasheet