I am interfacing SD Card in LPC3250 processor, facing issue in command line.
1) SD Clock is configure to 196 KHZ and powered up then i am issuing command
2) On Command line
- When SDMMC_IDLE(Put card in idle mode) command is sent the status register indicate the command is sent.
- When MMC_SENDOP_COND(Send operating condition) command is sent the status register indicate timeout.
Problem: No command is sent Other than IDLE command. Status register indicate TIMEOUT i tried it for different SD clock rate from 190 to 320 kHZ.
Please respond any workaround?