Technical discussions about the TI C55x DSPs (including the c5501, c5502, c5503, c5507, c5509, c5510 and OMAP5910).
Hi all, I am trying to connect an SD Card to a 5509A via a McBSP configured for MMC operation using the MMC CSL. I can successfully read and write sectors from/to the SD Card, and retrieve the SD Card status registers, so I think my physical interface is ok. In order to increase my bandwidth, I'd like to utilise the DMA Controller to handle the transfers to/from the SD Card. The CSLs 'MMC_SetupNative' structure has a field for Enabling/Disabling DMA for data read/write, but there does not appear to be any CSL functions that make use of DMA for data transfers. There is only the MMC_Read and MMC_Write functions, which use the CPU core to read and write one word at a time. Does anyone have any experience of using the MMC CSL in DMA mode ? Is it possible ? Are there any source code examples for this ? Thanks in advance for any response. Cheers, Scotty ------------------------------------ Check Out Industry's First Single-Chip, Multi-Format, Real-Time HD Video Transcoding Solution for Commercial & Consumer End Equipment: www.ti.com/dm6467