A method and apparatus is provided for transmitting multi-bit data across
asynchronous time domains. In one embodiment, the apparatus includes a
first delay circuit to generate a selector signal based upon an input
reference signal of a first time domain, a second delay circuit to
generate a delayed data signal based upon an input data signal, and
selection logic coupled to the first and second delay circuits to select
one of the data signal and the delayed data signal based upon the state
of the selector signal in accordance with an input clock signal of a
second time domain, such that at any given sampling point of the input
clock signal, the selector signal indicates valid data.