1. Due to the limitation of PCB layout, the length of ULPI bus will be relatively long. According to the prompt of 3.01, can you explain "minimum trace lengths and a strict maximum of 90 mm," for me, which means that the length difference between the shortest and the longest of 12 lines is not more than 90mm, or the length of bus is not more than 90mm? Or other understanding?
2. What is the relationship between the data transmission rate on the 66ps / cm ULPI bus? The maximum data rate of ULPI interface is 60m.
3. Is there any special rule on PCB wiring of this material?
