Multi-port serial media independent interface

摘要

A media independent interface in an integrated circuit device includes a first plurality of channels, each including a data transmit path and a data receive path, and a second plurality of channels, each including a transmit path to transmit an idle symbol and a receive path to receive the idle symbol. The interface also includes a codec, coupled to the transmit paths of the first and second pluralities of channels, to encode data and symbols on the transmit paths, and a multiplexer, coupled to the codec, to multiplex the data on the transmit paths of the first and second pluralities of channels as encoded by the codec. The interface further includes a Ser Des to serialize the multiplexed data.

主权项

1. A media independent interface in an integrated circuit device, comprising:
a first plurality of channels, each comprising a transmit path to transmit data; a second plurality of channels, each comprising a transmit path to transmit a respective idle symbol; a codec, coupled to the transmit paths of the first and second pluralities of channels, to encode the data and idle symbols on the transmit paths, the codec comprising:
encoding circuitry to encode data on the transmit paths of the first plurality of channels in accordance with a running disparity for successive channels of the first plurality of channels, andmultiplexing circuitry to receive a disparity from a last channel of the first plurality of channels and to select idle symbols for the second plurality of channels in accordance with the disparity from the last channel; a multiplexer, coupled to the codec, to multiplex the encoded data and idle symbols; and a serializer, coupled to the multiplexer, to serialize the multiplexed data and idle symbols.