A lot of the logic area turns out to be consumed by the shifters needed to handle the flexibility of the pin mapping options. A look at the PINCTRL register reveals four “base” selectors which implies four 32-bit barrel shifters, plus a configurable run-length tacked onto the end of the shifters. Basically, the “rotate + mask” portion of the PIO consumes more logic area than the state machine itself, and having to smash a set of rotate-masks + clock division and FIFO threshold computations into a single cycle is quite expensive time-wise. The flexibility of the PIO’s options basically means you’re emulating an FPGA-like routing network on top of an FPGA – hence the inefficiency.
«Она отказывается оставаться дома, постоянно куда-то спешит. Опасаюсь, это может привести к печальным последствиям. После госпитализации ее быстро выписали – вероятно, проблемы с сердечно-сосудистой системой. Сказывается преклонный возраст», – поделилась собеседница.
，详情可参考有道翻译
Twenty-five years ago, Cibelli was among the first scientists to try to clone human embryos, but he was trying to obtain matched stem cells, not make a baby. “There is no limit to human imagination and ways to make money, but there have to be boundaries,” he says. “And this is the boundary of making a human being who is not a human being.”
美国本田三月汽车销售数据公布，共售出130074台，较上月减少12个百分点。（财联社）
Принц Гарри планирует привезти наследников к деду на каникулы14:48