Issue link: https://iconnect007.uberflip.com/i/1315894
56 DESIGN007 MAGAZINE I DECEMBER 2020 Flight times of the critical signals should be examined. One could compare the matched lengths of each signal, but the delay will vary depending on the meander pattern and stackup layer. Thus, it is important to match delays, not lengths (Figure 4). Since all products must comply with strict electromagnetic compliance (EMC) regulations, all critical signals should be simulated to deter- mine the amount of expected radiation. Don't let your project call for Plan B, which is basi- cally disaster recovery. Figure 3: Crosstalk on long, parallel trace segments. Figure 4: Skew of the clock to address, control, and command signals.