An embodiment of the present invention is directed to a method of deterministic collision detection involving at least two ports. During this heat treatment, portions of the component part other than the predetermined portion are left as a base material to thereby selectively increase the strength or the wear and abrasion resistance of the component part. For each received data packet, an individual packet holding time is given by the size of the data packet and by the bandwidth of the subflow to which the packet belongs. A two step etch process may be implemented wherein the wordline stacks are etched into the polysilicon layer in the first etch and etched down to the substrate during the second etch.