Circuit and method for outputting aligned strobe signal and parallel data signal

An output circuit for outputting a parallel data signal aligned with a strobe signal, comprising:

• a detector receiving a parallel data signal, detecting a level change degree for said parallel data signal between a first time point and a second time point, and outputting a select signal according to said level change degree;
• a delay adjusting device receiving and differentially delaying said parallel data signal into a first and a second delayed parallel data signals with a first and a second delay time, respectively;
• and
• a first multiplexer electrically connected to said detector and said delay adjusting device, and selecting one of said first and said second delayed parallel data signals to be outputted in response to said select signal.

A method for outputting aligned parallel data signal and strobe signal, comprising steps of:

• receiving a parallel data signal and a strobe signal;
• detecting a level change degree for said parallel data signal between a first time point and a second time point, and outputting a select signal according to said level change degree;
• processing one of said parallel data signal and said strobe signal into a plurality of different signals;
• and
• selecting one of said plurality of different signals to be outputted along with the other one of said parallel data signal and said strobe signal according to said select signal.