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What SPI mode 3 means

A flash chip datasheet says it supports SPI mode 3 (CPOL = 1, CPHA = 1). How does the clock behave?

A.Clock idles low; data is sampled on the rising (first) edgeB.Clock idles high; data is sampled on the rising (second) edgeC.Clock idles high; data is sampled on the falling (first) edgeD.Clock idles low; data is sampled on the falling (second) edge

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What SPI mode 3 means

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