Your problem is unusual becuase USB is working for you but you see occassional problems when you boot up. The one way you can be sure that the above listed items are not causing the issue you are seeing is to follow the specification in SLAA457a and the EVM board designs. Since you pointed out that item 3 is seen in the EVM specification, you can leave the layout for PUR the way it is. The other items might be worth re-working. If after the re-work the issue still exists then your hardware investigation has to go beyond USB layout to other items on your board. Section 4.4 in SLAA457A talks about the use of the 1.4k resistor on PUR. Regards, Arthi
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