Bus Pirate - Can I Reprogram CSODIMM Default JEDEC Timings Including CR?

[AreYouLoco]

@ramguy

DDR4 and DDR5 parameter table reader

Sorry for the late reply and thanks for doing some digging! I had been digging through this a bit, both the jedec pmic5100 doc and whatever pmic/spd datasheets I can find. As you found out, nothing on the PMIC specifically would “lock” or write to 0x2F. The dimm vendor startup configuration registers don’t seem to include a configuration for this nor is 0x2F copied from the dimm vendor region to the host region (as some others are). Yeah, the datasheets I could find didn’t make a single menti…

DDR4 SPD read/write adapter

[Selected photo (4)] These are readily available 9V to 2.5 (not 2.54mm) JST connector. Instead of the weird plastic leather and cardboard type of 9V clip, I got the version with a plastic body. Unfortunately that seems to have it’s own foibles (feels a clunky, the plastic creaks and snaps a bit). Given that this is probably going to be a very low volume board I think this is probably sufficient.

Did you even search forum for DDR instead of asking AI ?