发明申请
US20080301606A1 Design Structure for Switching Digital Circuit Clock Net Driver Without Losing Clock Pulses
有权
用于切换数字电路时钟网络驱动器的设计结构,而不会丢失时钟脉冲
- 专利标题: Design Structure for Switching Digital Circuit Clock Net Driver Without Losing Clock Pulses
- 专利标题(中): 用于切换数字电路时钟网络驱动器的设计结构,而不会丢失时钟脉冲
-
申请号: US12192272申请日: 2008-08-15
-
公开(公告)号: US20080301606A1公开(公告)日: 2008-12-04
- 发明人: Jethro C. Law , Kirk Edward Morrow , John Cummings Schiff , Glen Arthur Wiedemeier
- 申请人: Jethro C. Law , Kirk Edward Morrow , John Cummings Schiff , Glen Arthur Wiedemeier
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 主分类号: G06F17/50
- IPC分类号: G06F17/50
摘要:
A system and method for switching digital circuit clock net driver without losing clock pulses is presented. A device uses glitchless clock selection logic, which includes an edge detector, to select a clock signal to provide to device circuitry based upon the device circuitry's performance requirements. When the rising edges of a first clock signal and a second clock signal align, the edge detector momentarily pulses a clock switch signal, which is used to clock in a clock selection signal to a multiplexer. As a result, when the clock selection signal is high, the device waits until the clock edges are aligned before switching clock signals.
公开/授权文献
信息查询