Open loop desynchronizer

An open loop desynchronizer, comprising:

• a demapper circuit for reading asynchronous data received over a synchronous channel, said demapper circuit generating a frequency deviation control signal that indicates instantaneous variations in a data nominal rate on said synchronous channel through positive and negative pulses;
• a buffer circuit for storing said asynchronous data received from said demapper circuit;
• a digital filter circuit for filtering said frequency deviation control signal in order to spread a total unit energy of each positive and negative pulse out over a specified time period, said digital filter circuit generating a delta phase frequency control signal that is a combination of said filtered frequency deviation control signal and a constant offset value corresponding to said nominal data rate on said synchronous channel;
• a numerically controlled oscillator circuit for generating a transmit clock signal from said delta phase frequency control signal, said transmit clock signal controlling transmission of said stored asynchronous data from said buffer circuit, said numerically controlled oscillator circuit generating said transmit clock signal without feedback input.

A method of desynchronizing asynchronous data from a synchronous channel, comprising the steps of:

• reading the asynchronous data from the synchronous channel, the synchronous channel having a predetermined nominal data rate;
• storing the asynchronous data into a buffer;
• detecting deviations from said nominal data rate of the asynchronous channel;
• generating a control signal in response to deviations from said nominal data rate of the synchronous channel;
• generating an asynchronous clock signal in response to said control signal without feedback input;
• transmitting the asynchronous data from said buffer in response to said asynchronous clock signal.