10.11 A Manchester decoder transforms a Manchester-coded data stream back to a regular binary data stream. There are two output signals. The data signal is the recovered data bit, which can be '0' or''. The valid signal indicates whether a transition occurs. The valid signal is used to distinguish whether the 'O' of the data sign transition or inactivity of the data stream. al is due to the 0-to-1 (a) Derive the state diagram. (b) Convert the state diagram to an ASM chart. (c) Derive VHDL code according to the ASM chart