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Probe point to measure  a timing of uSDHC

Question asked by Takayuki Ishii on Aug 1, 2018
Latest reply on Aug 2, 2018 by Takayuki Ishii

Hello community,

 

About Figure 40 and Table 51 in Datasheet of IMX6DQPAEC rev2,

Which point does it measured from/to?

 

In Figure 40, it seems that

 

SD2: uSDHC Output Delay     from "50% of SD_CLK" to "Voh max value".

SD3: uSDHC Input Setup Time   from "Voh max value" to "50% SD_CLK"

SD4: uSDHC Input Hold Time   from "50% SD_CLK" to "Vol mix value"

 

 

Or from "50% SD_CLK" to "50% SD_DATA"?

 

Which is a correct answer?

 

Best regards,

Ishii.

 

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