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FleXilicon Architecture and Its VLSI Implementation

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2 Author(s)
Jong-Suk Lee ; Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA ; Dong Sam Ha

In this paper, we present a new coarse-grained reconfigurable architecture called FleXilicon for multimedia and wireless communications, which improves resource utilization and achieves a high degree of loop level parallelism (LLP). The proposed architecture mitigates major shortcomings with existing architectures through wider memory bandwidth, reconfigurable controller, and flexible word-length support. VLSI implementation of FleXilicon indicates that the proposed pipeline architecture can achieve a high speed operation up to 1 GHz using 65-nm SOI CMOS process with moderate silicon area. To estimate the performance of FleXilicon, we modeled the processor in SystemC and implemented five different types of applications commonly used in wireless communications and multimedia applications and compared its performance with an ARM processor and a TI digital signal processor. The simulation results indicate that FleXilicon reduces the number of clock cycles and increases the speed for all five applications. The reduction and speedup ratios are as large as two orders of magnitude for some applications.

Published in:

IEEE Transactions on Very Large Scale Integration (VLSI) Systems  (Volume:17 ,  Issue: 8 )