SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The eMMC/SD/SDIOi host controller can be interfaced with a DMA controller. At the system level, the advantage is to discharge the LH of the data transfers. The module does not support wide DMA access (more than 1024 bytes) for SD cards, as specified in the SD Card Specification and SD Host Controller Standard Specification.
This mode is implied by modules that are not connected to the L3_MAIN interconnect (regardless of the value of the MMCHS_CON[20] DMA_MNS bit). For more information and/or to check the value of the MMCHS_HL_HWINFO[0] MADMA_EN bit, see Section 25.4.5.1, Master DMA Operations.
The DMA request is issued if the following conditions are met: