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1. Re: Depth Expansion of DDR2+ SRAM
krishnag_71 Nov 23, 2016 1:52 AM (in response to noskov.sergey)Hi Noss,
I am attaching a file showing how to connect two DDR2+ SRAMs in depth expansion. Please check the attached file.
Thanks.
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DDR II Depth Expansion.pdf 235.6 K
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2. Re: Depth Expansion of DDR2+ SRAM
noskov.sergey Apr 19, 2017 4:34 AM (in response to krishnag_71)Hi Krishna,
Thanks for reference schematic. Signals CQ/CQ# from 2_DDR II+ are not connected. I can calculate the worst-case data valid window (DVW) when reading from 1_DDR II+ :
DVW = tCQHCQH - tCQHQV + tCQHQX.
How can I calculate the worst-case data valid window, when reading from 2_DDR II+, if I use echo clocks from 1_DDR II+ to capture data?