HyperLynx – High Speed PCB Design Workshop - RTP Designers ...
HyperLynx – High Speed PCB Design Workshop - RTP Designers ...
HyperLynx – High Speed PCB Design Workshop - RTP Designers ...
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DDR2 <strong>Design</strong> Guidelines<br />
� What results are important<br />
— #3 The length from the last DIMM to the pullup<br />
resistors is typically 200 mils to 550 mils<br />
� Only applies to the Address and Command nets <strong>–</strong><br />
Data nets use ODT<br />
� No timing importance here<br />
DIMM Slot<br />
VDD<br />
#3<br />
VTT<br />
<strong>HyperLynx</strong> <strong>–</strong> <strong>High</strong> <strong>Speed</strong> <strong>PCB</strong> <strong>Design</strong> <strong>Workshop</strong><br />
VTT Pull-up Resistors<br />
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