presented herein represent conceptual views of illustrative circuitry embodying the present invention similarly it will be appreciated that any flow charts flow diagrams state transition diagrams pseudocode and the like represent various processes which may be substantially represented in computer readable media and so executed by a computer or processor whether or not such computer or processor is explicitly shown the functions of the various elements shown in the figures may be provided through the use of dedicated hardware as well as hardware capable of executing software in association with appropriate software when provided by a processor the functions may be provided by a single dedicated processor by a single shared processor or by a plurality of individual processors some of which may be shared moreover explicit use of the term u201c processor u201d or u201c controller u201d should not be construed to refer exclusively to hardware capable of executing software and may implicitly include without limitation digital signal processor u201c dsp u201d hardware read only memory u201c rom u201d for storing software random access memory u201c ram u201d and non volatile storage other hardware conventional and or custom may also be included similarly any switches shown in the figures are conceptual only their function may be carried out through.