Method and associated processing module for interconnection system

A processing module for an interconnection system, the interconnection system comprising a transmitter filter and a receiver equalizer, the transmitter filter arranged to filter a first signal based a pre-tap and a post-tap, and accordingly provide a second signal;

• the receiver equalizer arranged to equalize the second signal based on an equalizer tap and accordingly provide a third signal;
• the processing module comprising:
• a pre-tap tuning directing module, and
• a post-tap tuning directing module arranged to direct whether the post-tap is incremented or decremented according to a sign of the equalizer tap;
• and
• the pre-tap tuning directing module comprising:
• a predetermined number of comparators, each of the comparators being a hardware arranged to form an indicative pattern according to a plurality of data samples of the third signal and a transition sample of the third signal, compare if the indicative pattern matches a predetermined pattern, and accordingly provide a comparison result, wherein the transition sample is sampled between two of the plurality of data samples;
• wherein the pre-tap tuning directing module is arranged to direct whether the pre-tap is incremented or decremented according to the comparison results of the predetermined number of comparators.

A method for an interconnection system, the interconnection system comprising a transmitter filter and a receiver equalizer, the transmitter filter arranged to filter a first signal based on a pre-tap and accordingly provide a second signal, the receiver equalizer arranged to equalize the second signal and accordingly provide a third signal, and the method comprising:

• performing, by a hardware processor a pattern comparison step for forming an indicative pattern according to a plurality of data samples of the third signal and a transition sample of the third signal, comparing if the indicative pattern matches a predetermined pattern, and accordingly providing a comparison result, wherein the transition sample is sampled between two of the plurality of data samples;
• performing the pattern comparison step for a plurality of times to provide a plurality of corresponding comparison results;
• performing a voting step for proving a voting result according to majority voting of the plurality of comparison results;
• accumulating a plurality of voting results to provide an accumulation result;
• and
• performing a pre-tap tuning directing step for, according to the accumulation result, directing whether the pre-tap is incremented or decremented.