期刊名称:International Journal of Soft Computing & Engineering
电子版ISSN:2231-2307
出版年度:2011
卷号:1
期号:5
页码:27-30
出版社:International Journal of Soft Computing & Engineering
摘要:The multi-layer AHB busmatrix (ML-AHB busmatrix) proposed by ARM is a highly efficient on chip bus that allows parallel access paths between multiple masters and slaves in a system. However, the ML-AHB busmatrix of ARM offers only transfer-based fixed-priority and round-robin arbitration schemes. In this paper, we present one way to improve the arbiter implementation of the ML-AHB busmatrix. The proposed arbiter, which is Self-motivated (SM), selects one of the nine possible arbitration schemes based upon the priority-level and the desired transfer length from the masters so that arbitration leads to the maximum performance. Our SM arbitration scheme has the following advantages: 1) It can adjust the processed data unit; 2) it changes the priority policies during runtime; and 3) it is easy to tune the arbitration scheme according to the characteristics of the target application.