When does PCB propagation delay matter in PCB layout?<br />Dave goes down the rabbit hole from DIY TTL processor design to DDR memory design and layout.<br />DDR memory termination.<br />What is a timing budget? When is it important?<br />How does signal integrity matter?<br />When do you have to do serpentine PCB traces to match trace and differential pair lengths?<br /><br />Micron DDR memory timing budget design:<br />https://www.micron.com/-/media/client/global/documents/products/technical-note/dram/tn4611.pdf<br />The CIAA Project https://github.com/ciaa/Hardware/tree/master/PCB/ACC/CIAA_ACC<br />How to lay out a PCB: https://www.youtube.com/watch?v=JrH_itjMDjo<br /><br />Forum: https://www.eevblog.com/forum/blog/eevblog-1247-ddr-memory-pcb-propagation-delay-layout/<br /><br />#PCB #Layout #DDRmemory<br /><br />Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy<br />Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA<br />Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce<br /><br />EEVblog Main Web Site: http://www.eevblog.com<br />The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2<br /><br />Support the EEVblog through Patreon!<br />http://www.patreon.com/eevblog<br /><br />AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g<br />Buy anything through that link and Dave gets a commission at no cost to you.<br /><br />Stuff I recommend:<br />https://kit.com/EEVblog/<br /><br />Donate With Bitcoin & Other Crypto Currencies!<br />https://www.eevblog.com/crypto-currency/<br /><br />T-Shirts: http://teespring.com/stores/eevblog<br />Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3
