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Question on DDR memory timing parameters listed in MPC5200B datasheet

Question asked by Don DeOliveira on Feb 25, 2015

The MPC5200B datasheet specifies the DDR SDRAM read timing parameters for data setup and hold relative to MDQS but shows data setup as a max parameter?  The SpecID is A5.18.  Can someone explain what is meant by maximum setup time allowed?  Also the data hold time is listed as a minimum number (2.6ns), my question here is if this relative to MDQS before it is shifted by a 1/4 clock?

 

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