Use of multi-level modulation signaling for short reach data communications
AssigneeBroadcom Corporation
InventorsLorenzo Longo, Vivek Telang
Life of this patent
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Abstract
A short reach communication system includes a plurality of communication SERDES that communicate data over a short reach channel medium such as a backplane connection (e.g., PCB trace) between, for example, chips located on a common PCB. A multi-level modulated data signal is generated to transmit/receive data over the short reach channel medium. Multi-level modulated data signals, such as four-level PAM, reduce the data signal rate therefore reducing insertion loss, power, complexity of the circuits and required chip real estate.
Claims20
A high speed communication system comprising:
- a high speed SERDES comprising a transceiver;
- a multi-level modulated data signal transmitted or received over a communications channel medium by the transceiver;
- and
- wherein the multi-level modulated data signal reduces a data signaling rate of the high speed communication system.
A high speed communication system comprising:
- a plurality of high speed SERDES;
- a short reach communications channel medium connecting the plurality of high speed SERDES;
- and
- a transceiver operable with each of the plurality of high speed SERDES to transmit/receive four-level modulated data signals over the short reach communications channel medium.
A high speed short reach communication system comprising:
- a plurality of high speed SERDES, each of the plurality of high speed SERDES comprising a transmitter and receiver;
- a short reach communications channel medium connecting the plurality of high speed SERDES;
- and
- a multi-level pulse amplitude modulated (PAM) data signal transmitted or received by the plurality of high speed SERDES over the short reach communications channel medium.
Dependencies are inferred from the claim text.