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iMX8 Nano DDR4 DRAM_VREF capacitor values

Question asked by frank van hooft on May 8, 2020
Latest reply on May 8, 2020 by Rita Wang

Looking at the NXP reference design for the iMX8 Nano with DDR4, there are some 1uF and 0.01uF capacitors used to filter the generated DRAM_VREF signal.  Are these capacitor values critical? Specifically, is there any problem with using 4.7uF in those 3 locations? (Because we already have a bunch of 4.7uF's on the board, so I'd like to limit the number of BOM items - particularly that 0.01uF as it's the only one on the board.)

 

Thanks a lot.

 

 

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