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

Design Structure for Switching Digital Circuit Clock Net Driver Without Losing Clock Pulses
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.
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