为了提升XIP代码执行效率,FlexSPI中也集成了XIP Enhanced Mode特性(其实就是Continuous read模式),见下图,CS1是包含CMD子序列的读时序(即第一次CS),CS2/3(包括后续所有CS)相比CS1少了CMD子序列,这就是Continuous read访问时序。 FlexSPI的XIP Enhanced Mode特性并不能够用于任意串行NOR Flash,这对Flash厂商设计有要求...
The L4986 is a peak current-mode PFC controller for boost converter with a proprietary multiplier “emulator” which in addition to the innovative THD optimizers guarantee very low Total Harmonic Distortion (THD) performance in all operating conditions. The device comes in a pin SO package and of...
When the shear wave reaches the opposite side, another mode conversion happens such that part of the energy is converted into a new pressure wave that travels in the same direction as the first one. This longitudinal wave is called a trailing echo. After the first trailing echo, the shear ...