MMC speeds anemic on the LPC4330-Xplorer Board

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by fweller on Thu Feb 25 14:34:21 MST 2016
The hardware platform being used is the OM13027 LPC4330-Xplorer Board by NGX

The basic MMC (SD Card) memory performance with the demo code that was loaded on the demo board is not impressive.  It is only performing reads and writes at a few hundred kBytes per second.  The SD cards being used can easily get a sustained 4MB/s to 5MB/s write transfer rate using a generic SD card reader/writer. 

Are there any updated software drivers for the MMC interface that can improve performance?