Low power edge and data sampling

A method of operation in an integrated circuit receiver, the method comprising:

• receiving a data signal having a valid data region and a transition region;
• receiving a timing signal created synchronous with the data signal;
• detecting a data value in the valid data region in response to the timing signal in a non-integrating manner;
• detecting an edge value in the transition region in response to the timing signal in an integrating manner to generate early/late information;
• wherein detecting an edge value in the transition region comprises integrating the data signal in response to the timing signal to generate an integrated output and sampling the integrated output.

A signaling system comprising:

• a first integrated circuit device including a transmitter circuit to transmit a data signal and an accompanying timing signal, the timing signal created synchronous with the data signal;
• a second integrated circuit device including a receiver circuit to receive the data signal and timing signal, the receiver circuit comprising
• a non-integrating sampling receiver circuit responsive to a timing signal to detect a valid data region of a data signal;
• and
• an integrating receiver circuit to receive the data signal and generate an integrated output in response to the timing signal, the integrating receiver circuit including a sampler to sample the integration output to detect a transition region associated with the data signal.