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1. minute (mntmn@mastodon.social)'s status on Saturday, 29-Jun-2024 06:39:21 JST minute

   today i learned: to be able to use ye olde IDT5V41066 clock generator output (from MNT Reform motherboard) as an input for Si53154 (refclk fanout buffer on RCORE D-2), one needs 49.9 ohm pulldown resistors on these clock lines. otherwise everything is very unhappy

   • ✧✦✶✷Catherine✷✶✦✧ (whitequark@mastodon.social)'s status on Saturday, 29-Jun-2024 06:40:48 JST ✧✦✶✷Catherine✷✶✦✧

     in reply to

     @mntmn is that like an SSTL output?

   • minute (mntmn@mastodon.social)'s status on Saturday, 29-Jun-2024 06:42:14 JST minute

     in reply to

     • ✧✦✶✷Catherine✷✶✦✧

     @whitequark the manual says "HCSL" but on one page it says the outputs are "open source" and need to be conditioned into the right thing according to your needs, hence my earlier joke

   • ✧✦✶✷Catherine✷✶✦✧ (whitequark@mastodon.social)'s status on Saturday, 29-Jun-2024 06:42:47 JST ✧✦✶✷Catherine✷✶✦✧

     in reply to

     @mntmn ohhhhh yeah this makes a lot of sense