MultiMediaCardTM
Figure 4-10 R2 Response Format
The first byte is identical to the response R1. The content of the second byte is described in the
following:
- Erase param: An invalid selection, sectors or groups, for erase.
- Write protect violation: The command tried to write a write protected block
- Card ECC failed: Card internal ECC was applied but failed to correct the data.
- CC error: Internal card controller error
- Error: A general or an unknown error occurred during the operation.
- Write protect erase skip | lock/unlock command failed: This status bit has two functions
overloaded. It is set when the host attempts to erase a write protected sector or if a sequence or
password error occurred during card lock/unlock operation.
- Card is locked: Set when the card is locked by the user. Reset when it is unlocked.
Format R3
This response token is sent by the card when a READ_OCR command is received. The response length
is 5 bytes (refer to Figure “R3 Response Format”). The structure of the first (MSB) byte is identical to
response type R1. The other four bytes contain the OCR register.
Figure 4-11 R3 Response Format
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