Hi All,
Currently i am working on device stack.I was going thru USB 2.0 spec.In chapter 8 they have given some state transition diagrams for host and device.
I could not understand the notations used in the diagram.For eg.in figure 8-32 , he uses HSD2.PID and HSD2.x.
I presume HSD2.PID is the pid for data token.Can some body clarify me as what this "x" member refers to.
They hav also given some data structures in Appendix B.No xplanation as to the members of the data structure.