Ropes & Gray LLP
Equalizer circuitry with selectable tap positions and coefficients
Transmitter equalizer circuitry, e.g., for a serial, digital, data signal, includes tapped delay line circuitry for outputting a plurality of differently delayed versions of the signal propagating through the delay line circuitry. The equalizer circuitry also includes a plurality of electrical current digital-to-analog converters (“DACs”). The equalizer circuitry still further includes controllable (e.g., programmable) routing circuitry for selectably routing the delayed versions of the signal to the various DACs. The current strengths employed by the various DACs are also preferably controllable (e.g., programmable).
Altera Corporation
H H
H04L H04L
inventional inventional
Weiqi Sergey Mingde Mengchi Thungoc M.
Ding Shumarayev Pan Liu Tran