Automotive asymmetric ethernet using frequency-division duplex
AssigneeMarvell Asia Pte Ltd
InventorsXing Wu, Shaoan Dai, Dance Wu, William Chu
Life of this patent
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Abstract
An Ethernet Physical Layer (PHY) device includes a link interface and a transceiver. The link interface is configured to connect to a full-duplex wired Ethernet link. The transceiver is configured to receive first Ethernet signals carrying first data at a first data rate over the Ethernet link in a first direction, the first Ethernet signals occupying a first frequency band, and to transmit second Ethernet signals carrying second data at a second data rate different from the first data rate, over the Ethernet link in a second direction that is opposite the first direction, the second Ethernet signals occupying a second frequency band that is different from the first frequency band.
Claims10
An Ethernet Physical Layer (PHY) device, comprising:
- a link interface, configured to connect to a full-duplex wired Ethernet link;
- a transceiver, configured to:
- receive first Ethernet signals carrying first data at a first data rate over the Ethernet link in a first direction, the first Ethernet signals occupying a first frequency band;
- and
- transmit second Ethernet signals carrying second data at a second data rate different from the first data rate, over the Ethernet link in a second direction that is opposite the first direction, the second Ethernet signals occupying a second frequency band that is different from the first frequency band;
- a first filter tuned to the first frequency band and configured to suppress a portion of the first Ethernet signals that is above the first data rate, by filtering the first Ethernet signals received from the Ethernet link;
- and
- a second filter tuned to the second frequency band and configured to suppress a portion of the second Ethernet signals that is below the second data rate, by filtering the second Ethernet signals transmitted to the Ethernet link.
A method for communication, comprising:
- in an Ethernet Physical Layer (PHY) device connected to a full-duplex wired Ethernet link,
- receiving first Ethernet signals carrying first data at a first data rate over the Ethernet link in a first direction, the first Ethernet signals occupying a first frequency band;
- transmitting second Ethernet signals carrying second data at a second data rate different from the first data rate, over the Ethernet link in a second direction that is opposite the first direction, the second Ethernet signals occupying a second frequency band that is different from the first frequency band;
- suppressing a portion of the first Ethernet signals that is above the first data rate, by filtering the first Ethernet signals using a first filter tuned to the first frequency band;
- and
- suppressing a portion of the second Ethernet signals that is below the second data rate, by filtering the second Ethernet signals using a second filter tuned to the second frequency band.
Dependencies are inferred from the claim text.