Sd3.0-host-ahb-emmc4.4-usersguide-ver5.9-jan11-10.pdf

This appears to cover an AHB-based SD/MMC host controller (SD 3.0 spec) talking to eMMC 4.4 devices. Likely from an SoC vendor's IP block (maybe Synopsys or a proprietary ARM-based design).

PDF is floating around as sd3.0-host-ahb-emmc4.4-usersguide-ver5.9-jan11-10.pdf . Happy to share specific tables if anyone needs the register map for DLL or clock control. sd3.0-host-ahb-emmc4.4-usersguide-ver5.9-jan11-10.pdf

Digging into sd3.0-host-ahb-emmc4.4-usersguide-ver5.9-jan11-10.pdf – Key Takeaways This appears to cover an AHB-based SD/MMC host