Delay line

A delay line, comprising:

• a plurality of chain-connected unit delay blocks, each of said plurality of chain-connected unit delay blocks comprising:
• a forward delay unit configured to delay an input signal received from a previous unit delay block of the plurality of chain-connected unit delay blocks in response to a delay control code corresponding to the unit delay block;
• and
• a reverse delay unit configured to delay an input signal received from the forward delay unit or a next unit delay block of the plurality of chain-connected unit delay blocks in response to a delay control code corresponding to the next unit delay block.

A delay line, comprising:

• a plurality of chain-connected unit delay blocks, each of said plurality of chain-connected unit delay blocks comprising:
• a forward transfer unit configured to output an input signal or a forward signal received from a previous unit delay block of the plurality of chain-connected unit delay blocks in response to a delay control code corresponding to the corresponding unit delay block;
• a reverse transfer unit configured to output a reverse signal received from a next unit delay block of the plurality of chain-connected unit delay blocks or a turn signal to the previous unit delay block;
• and
• a turn transfer unit configured to output an output signal of the forward transfer unit as the turn signal in response to a delay control code corresponding to the next unit delay block.

A method for operating a delay line including a plurality of chain-connected unit delay blocks, each having a forward input node, a forward output node, a reverse input node, and a reverse output node, the method, comprising:

• outputting a signal applied to the forward input node to the forward output node in response to a delay control code corresponding to the corresponding unit delay block;
• outputting a signal applied to the reverse input node to the reverse output node;
• and
• outputting a signal applied to the forward output node to the reverse input node in response to a delay control code corresponding to the next unit delay block.