J4 ›› 2011, Vol. 38 ›› Issue (3): 83-89.doi: 10.3969/j.issn.1001-2400.2011.03.014

• Original Articles • Previous Articles     Next Articles

Quasi delay-insensitive full asynchronous arbiter for the network on chips

GUAN Xuguang;YANG Yintang;ZHU Zhangming   

  1. (Research Inst. of Microelectronics, Xidian Univ., Xi'an   710071, China)
  • Received:2010-04-20 Online:2011-06-20 Published:2011-07-14
  • Contact: GUAN Xuguang E-mail:guanxuguang_5@126.com

Abstract:

This paper proposes a quasi delay-insensitive full asynchronous arbiter for the network on chips. With the function of priority self-detection, it improves the quality of service given by the priority variations of data packages from different directions. It can automatically select one of output schemes according to dynamically detecting the changes of priority in data packages, solving the problems of ports priority fixation in the conventional static arbitration mechanism. The stability of arbitration is greatly enhanced owing to decoupling the arbitration module from the output module by locking input requests. The application of the threshold gate makes the whole arbiter quasi delay-insensitive. The arbiter is implemented in 0.18μm standard CMOS technology. Results have shown that the average arbitration time is 1.175ns with average dynamic power consumption of 1.53mW, which can fulfill the demand of high-speed on-chip data package arbitration.

Key words: network on chips, dynamic arbitration, full asynchronous, threshold gate, quasi delay-insensitive