Hi folks!
The small story before my question. I'm going to use NXP's LS1043A (1Ghz, 1.2Ghz, 1.4Ghz, 1.6Ghz versions) processor in my industrial router project. After surfing through the datasheet I figured out that it is possible to use a DDR3L OR DD4 IC's and in reference design was used DDR4(512Mx8). Searchings in Reference design's BOM figured out that this is an MT40A512M8HX-093E:A. And as I understood on Digikey this is an obsolete part. And even not an industrial version of the chip. Digikey says that chip is using 1066Mhz speed.
My question is how can I figure out what DDR4 (DDR3L) speed might be used with this kind of processors and how can I figure out the compatible speed of DDR IC's to my processor IC?
PS: Google provides more information about Fly-By topology for DDR4 layout. Are there any strict rules about the layout? (or I was unlucky and didn't found T-branch designs)
The small story before my question. I'm going to use NXP's LS1043A (1Ghz, 1.2Ghz, 1.4Ghz, 1.6Ghz versions) processor in my industrial router project. After surfing through the datasheet I figured out that it is possible to use a DDR3L OR DD4 IC's and in reference design was used DDR4(512Mx8). Searchings in Reference design's BOM figured out that this is an MT40A512M8HX-093E:A. And as I understood on Digikey this is an obsolete part. And even not an industrial version of the chip. Digikey says that chip is using 1066Mhz speed.
My question is how can I figure out what DDR4 (DDR3L) speed might be used with this kind of processors and how can I figure out the compatible speed of DDR IC's to my processor IC?
PS: Google provides more information about Fly-By topology for DDR4 layout. Are there any strict rules about the layout? (or I was unlucky and didn't found T-branch designs)
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