Iam using ADZS BF 548 evaluation board, iam using SD CARD in my project, the interface is working fine i can able to write and read data using DMA for both single and multiple Block,but the problem is its taking more time to write and Read, for example 22seconds to write and read data for just 10KB!!!!!!!! is there any way that i can speed up my sdcard accessing?????? for putting card into data transaction i make SD clock to 16MHZ, do i need to increasse or decrease the clock?? or any other method to speed up?
DO i need to Erase SD card before writing into any block??
Find the below attched code for SD Card
Thanks for the reply in advance