4 ms·
The signal integrity at 0.6V at whatever frequency these are at, across a connector must be horrible. Are people doing this?
by kingosticks 8y ago
The signal integrity at 0.6V at whatever frequency these are at, across a connector must be horrible. Are people doing this?
- ChuckMcM 8y agoI have seen LPDDR modules where the ASIC provides the connector signals. So they run 0.6V between the LPDDR chips and the ASIC, then the ASIC runs 1.8V on the connector.
- kingosticks 8y agoI don't think I follow your topology. The asic is driving 1.8V to a dimm with 3 LPDDR chips on it? At ddr4 speeds?
- ChuckMcM 8y agoThe modules in question were for an embedded system with 3 different memory size options. The LPDDR chips and ASIC were on the memory module (4, 6, or 8 LPDDRs), and the module connected to the baseboard with a high speed mezzanine connector. Is this something you are looking to build for your own system? I assume the ASIC was proprietary but I could reach out to the vendor and see where they had the modules made (or if they were built in house).
- kingosticks 8y agoRight I see. So memories and controller on the same module just like normal. My original comment was concerning parallel 0.6V signalling at ddr4 speeds over a connector - which isn't happening here. Or probably anywhere.