如果要解決外部設(shè)備速度慢的問(wèn)題,在沒(méi)有準(zhǔn)備好的可用PIN控件的情況下可以使用內(nèi)置的分流時(shí)鐘和時(shí)鐘信號(hào)作為計(jì)時(shí)器.分流主時(shí)鐘按照2,4,6,8的形式在同樣的及時(shí)參數(shù)下允許更長(zhǎng)的計(jì)時(shí)延遲.同樣的芯片選擇計(jì)時(shí)參數(shù),但分流時(shí)鐘信號(hào)用作參照而不是用作主時(shí)鐘,而且所有的轉(zhuǎn)換隨著時(shí)鐘信號(hào)上升沿在全循環(huán)延遲時(shí)發(fā)生.
我是做移民翻譯的,這方面不大懂,大致是這個(gè)意思,
英語(yǔ)翻譯
英語(yǔ)翻譯
Accesses to slow external peripherals that do not have READY pin capable controls can
be accomplished by using the internal divided clock,flclk,as the timing source.Divid- ing hclk by 2,4,6,or 8 allows longer timing delays with the same programmable timing parameters.The Chip Select timing parameters are the same but the divided flclk is used
as the reference rather than hclk and all the transitions will occur with the rising edge of fclk with only full cycle delays
Accesses to slow external peripherals that do not have READY pin capable controls can
be accomplished by using the internal divided clock,flclk,as the timing source.Divid- ing hclk by 2,4,6,or 8 allows longer timing delays with the same programmable timing parameters.The Chip Select timing parameters are the same but the divided flclk is used
as the reference rather than hclk and all the transitions will occur with the rising edge of fclk with only full cycle delays
英語(yǔ)人氣:558 ℃時(shí)間:2020-05-02 04:43:12
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