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Memory controller can operate at a higher clock frequency. But DRAM core cells can operate only at limited frequency.
In single data rate SDRAM, the physical interface was acting at the same frequency as the DRAM memory cell and the IO.
But in case of DDR SDRAM, the data rate was doubled (DDR...
SDC is purely design specific. The clock definitions, uncertainty values, case setting, input/output delay specifications, timing exceptions all depend on our design, the number of clocks you have and the frequency of those clocks. SDC can be check for syntax errors by loading it (in tools like...
To use the low power options of the tool, a low power license is required.
Information about UPF and UPF tech docs -
http://www.unifiedpowerformat.com/technicaldocuments.html
Low power methodology manual is available in net for download.
Re: Does clock skew leads to Setup Violations or Hold Violat
With zero skew, there is won't be any hold violation.
At zero skew, Tcq + Tcomb should be greater than Thold.
Even if Tcomb = 0, Tcq will always be greater than Thold.
Re: CTS Route Metal
Generally, the top-most layer is reserved for the power routing. The layer that is immediately below the top-most metal layer can be utilized for clock routing. I am not sure whether clock routing can share the top-most layer with power routing. Can somebody clarify this?
To generate a spice netlist, we need parasitic information for the nets as well. Just using the spice models for the cells won't give accurate results. If you have the LEF and DEF, you can use Starxt to dump the spice netlist.
Re: IR drop analysis
Blastrail/Quartzrail can do the IR drop analysis. We are usually interested in the % of vdd/vss drop. Also there are other tools available from Synopsys and Cadence to do the IR drop analysis.
Re: mail using perl
Try the following section of code (perl script):
open (MAILFD, "| /usr/lib/sendmail -it") || die "Cannot run sendmail... $!";
print MAILFD "From: <your mail id>\n";
print MAILFD "To: <recipient id>\n";
print MAILFD "Subject: <subject>\n";
print MAILFD "<message body>"...
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