| 主权项 |
1. An apparatus, comprising:
a flip-flop including:
a first input configured to receive a first setup time and delay control (SDC) signal,a second input configured to receive a second SDC signal, andan output buffer including first, second, and third conductive paths, the second conductive path being non-conductive when the first SDC signal has a first value at the first input and being conductive when the first SDC signal has a second value at the first input and the third conductive path being conductive when the second SDC signal has a third value at the second input; and a propagation delay sensor configured to:
estimate a propagation delay of the flip-flop,compare the propagation delay to a first threshold and a second threshold, andwhen the estimated propagation delay exceeds the first threshold, supply the first SDC signal having the second value to the first input of the flip-flop and when the estimated propagation delay exceeds the second threshold, supply the second SDC signal having the third value to the second input of the flip-flop. |
