Register Binding based Power Management for Highlevel Synthesis of Control Flow Intensive.pdfVIP

Register Binding based Power Management for High-level Synthesis of Control- Flow Intensive Behaviors Lin Zhong, Jiong Luo, Yunsi Fei and Niraj K. Jha Department of Electrical Engineering Princeton University, Princeton, NJ 08544 ABSTRACT Our method does not impact the choice of the scheduling or A circuit or circuit component that does not contain any functional unit binding algorithms and is easy to incorporate into spurious switching activity, i.e., activity that is not required by its existing high-level synthesis systems. Our experimental results specified functionality, is called perfectly power managed (PPM). show an average power reduction of 45.9% at an average area We present a general sufficient condition for register binding to overhead of 7.7% compared to power-optimized RTL circuits. ensure that a given set of functional units is PPM. This condition The paper is organized as follows. In Section 2, we give an not only applies to data-flow intensive (DFI) behaviors but also to example to motivate our method. In Section 3, we present a control-flow intensive (CFI) behaviors. It leads to a sufficient condition for PPM register binding which leads to a straightforward power-managed (PM) register binding algorithm. register binding algorithm for power management, and discuss The proposed algorithm is independent of the functional