topic VTT TERMINATION OF DDR4 in Layerscape

VTT TERMINATION OF DDR4

Ellu24 — Mon, 09 May 2022 05:32:47 GMT

Please explain the decoupling circuit of ddr4 in the attachment. What is the use of C1584, C1585 in the diagram and what is DNP? Can i use a ceramic 10uF capacitor for this?

Re: VTT TERMINATION OF DDR4

yipingwang — Wed, 11 May 2022 02:12:19 GMT

DNP (do not populate). these are balk or larger capacitance capacitors, that are good for reducing the lower frequency power burst consumption.

Re: VTT TERMINATION OF DDR4

Ellu24 — Wed, 11 May 2022 02:14:57 GMT

Thank you for your reply. Can I use ceramic capacitors for this as specifies FRWY BOM.

Thanks in advance