发明授权
US06583735B2 Method and apparatus for adaptive bus coding for low power deep sub-micron designs
失效
用于低功率深亚微米设计的自适应总线编码的方法和装置
- 专利标题: Method and apparatus for adaptive bus coding for low power deep sub-micron designs
- 专利标题(中): 用于低功率深亚微米设计的自适应总线编码的方法和装置
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申请号: US09920854申请日: 2001-08-03
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公开(公告)号: US06583735B2公开(公告)日: 2003-06-24
- 发明人: Jörg Henkel , Haris Lekatsas
- 申请人: Jörg Henkel , Haris Lekatsas
- 主分类号: H03M734
- IPC分类号: H03M734
摘要:
The power consumption of interconnects starts to have a significant impact on a system's total power consumption. Besides increasing buses (length, width) etc. this is mostly due to deep sub-micron effects where coupling capacitances between bus lines (wire-to-wire) are in the same order of magnitude as the base capacitances (wire-to-metal-layer). At that point, encoding schemes that solely address the minimization of transitions for the purpose of power reduction do not effectively work any more. Using a physical bus model that accurately models coupling capacitances, a signal bus encoding/decoding apparatus with encoding schemes that are partially adaptive and that take coupling effects into consideration is presented. The encoding schemes do not assume any a priori knowledge that is particular to a specific application.