SD v4.51 Controller

The controller communicates with SDIO devices, SD memory cards, and eMMC devices. The controller modes use up to eight data signals.

The controller's 32-bit registers are accessed via an AXI programming interface. The register set includes a data port to read from and write the I/O port. The SD/eMMC I/O interface is routed through the PMC MIO or the EMIO. The I/O interface is not available through the LPD MIO.

The controller also includes an AXI interface for the dual-mode DMA controller. The DMA controller has a simple programming mode and a descriptor based mode.