Conclusion and outlook
Power management techniques in system on chips

Hardware techniques to support the implementation of power management in embedded electronic circuits are diverse and locally efficient. To achieve real energy efficiency, a number of issues need to be addressed:

• The organization of a functional architecture according to a power management structure must be thought through in its entirety;

  For example, inserting a multitude of power control mechanisms locally can become counter-productive, as it is then difficult to manage them efficiently at system level.

• The insertion of power management mechanisms affects functional performance and can also lead to logic errors if all precautions are not taken. Functional verification is thus a complex task for a circuit optimized for power consumption;

...