Patent ID: 7769057
Filing Date: 2010-08-03
Classification: H04L

Abstract:
1. A high speed serial link, comprising: a data driver configured to receive a real data input and responsively generate a driver data output; and a replica driver structure configured to receive a calibration data input and responsively generate a replica driver output; the replica driver structure comprising: wherein the calibration engine is configured to compare the peak level detector output to a reference value and responsively perform a data driver adjustment, and wherein the data driver adjustment comprises at least one of a driver biasing adjustment, a driver intermediate stage bandwidth adjustment, and a driver equalization setting adjustment; the replica driver further comprising a replica pre-driver MUX and a replica driver output stage, the replica pre-driver MUX in circuit communication with the calibration engine and configured to receive the calibration data input from the calibration engine and responsively generate a replica MUX data output to the replica driver output stage, the replica driver output stage configured to responsively generate a replica driver data output; a signal interface in circuit communication between the replica driver output stage and the peak level detector and configured to generate a signal interface output signal to the peak level detector responsive to the replica driver data output, wherein the peak level detector is configured to generate the peak level detector output responsive to the signal interface output signal; the data driver further comprising: wherein the calibration engine is configured to perform the driver component adjustment by generating a pre-driver/MUX adjustment signal to the data pre-driver MUX and the replica pre-driver MUX, and a driver adjustment signal to the data driver output stage and the replica driver output stage; and wherein the driver adjustment signal is configured to perform the driver biasing adjustment through setting the replica driver output stage to a minimum output amplitude responsive to at least one driver aspect; setting an input to the replica driver output stage to a maximum frequency; comparing a replica driver output stage output amplitude V