System and method for improving equalization in a high speed serdes environment
AssigneeInternational Business Machines Corporation
InventorsBrian J. Connolly, Todd E. Leonard
Life of this patent
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Abstract
A method and accompanying system are disclosed for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side. The method includes transmitting a flow control packets from the local side to the remote side to change remote side transmission characteristics in a link channel; monitoring the bit error rate (BER) in the link channel; transferring additional flow control packets to adjust the remote side transmission characteristics; and processing the BER data at the local side to generate the remote side transmission characteristics for the link channel.
Claims13
A method for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side, the method comprising:
- transmitting a flow control packet from the local side to the remote side to change remote side transmission characteristics in a link channel;
- monitoring the bit error rate (BER) in the link channel;
- transferring additional flow control packets to adjust the remote side transmission characteristics;
- and
- processing the BER data at the local side to generate the remote side transmission characteristics for the link channel.
A program storage device readable by a computer, tangibly embodying a program of instructions executable by the computer to perform a method for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side, the method comprising:
- transmitting a flow control packet from the local side to the remote side to change remote side transmission characteristics in a link channel;
- monitoring the bit error rate (BER) in the link channel;
- transferring additional flow control packets to adjust the remote side transmission characteristics;
- and
- processing the BER data at the local side to generate the remote side transmission characteristics for the link channel.
A system for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side comprising:
- a local side physical layer including:
- a local side transmitter;
- a local side receiver electrically connected to the local side transmitter;
- a local side serializer electrically connected to an output of the local side transmitter;
- a local side deserializer electrically connected to an input of the local side receiver;
- and
- a local side adaptive pre-emphasis logic block coupled between the local side transmitter and the local side receiver and configured to receive an indication of a bit error rate for a channel of the high-speed SerDes cable link and to create based thereon coefficients to be applied to a remote side serializer.
Dependencies are inferred from the claim text.