The present invention provides a versatile system for management of
clocking for a serial interface. Serial input data, comprising a
plurality of fields, and preceded by a specific input pattern, is
provided to a receiver element. Within one of the fields in the serial
input data, some information concerning the size the current serial data
payload is included. Responsive to receiving the specific input pattern,
the system of the present invention asserts a clock enable signal to
activate clocking. A countdown corresponding to the size the current
serial data payload is initiated. Once that countdown has reached zero,
the clocking for the interface is disabled.