Make sure sdcard is under "transfer state", if the sdcard is under other state, host will send Cmd12 to stop the current operation and to transit sdcard to "stand-by state".
Host sends Cmd13 to check sdcard's status, to make sure sdcard is "ready-for-data".
Host sends Cmd18 to do multiple blocks read, the address here is different between high capacity sdcard and normal sdcard, the address of SDHC is equal to the block number, while normal sdcard's address is equal to block number times 512.
Source
The documentation for this Page was generated from the following file: