Apparatus and methods of dynamic transmit equalization

摘要

One embodiment relates to an integrated circuit configured to perform dynamic transmit equalization of a bi-directional lane. The integrated circuit including an interface between the physical coding and media access control circuitry, and an equalization control circuit which is external to the physical coding circuitry and which is configured to perform the dynamic transmit equalization using said interface. Another embodiment relates to a transceiver circuit which includes physical coding circuitry and media access control circuitry. The transceiver circuit further includes an interface between the physical coding circuitry and the media access control circuitry and an equalization controller which is external to the physical coding circuitry and which is configured to perform dynamic transmit equalization using said interface. The interface is configured to provide transmit coefficient data in a time-multiplexed signal format from the media access control circuitry to the physical coding circuitry. Other embodiments, aspects, and features are also disclosed.

主权项

1. An integrated circuit comprising:
physical coding circuitry for encoding data bytes for transmission and decoding received data bytes; media access control circuitry for controlling link initialization and training; an interface between the physical coding and the media access control circuitry; an equalization control circuit, external to the physical coding circuitry, wherein the equalization control circuit performs dynamic transmit equalization using said interface to refine receiver coefficients during a phase where the integrated circuit operates as a slave and refine transmitter coefficients during a phase where the integrated circuit operates as a master; and a preset-to-coefficient converter in the media access control circuitry which converts transmitter preset data to transmitter coefficient data.