Product manual

SPI Protocol Definition
SanDisk Industrial Grade SD Product Manual, Rev. 1.0 © 2003 SANDISK CORPORATION -5-13
7 Byte 1 0 7 Byte 2 0
0
Card is Locked
WP Erase Skip, Lock/Unlock Cmd Failed
Error
CC Error
Card ECC Failed
WP Violation
Erase Param
Out of Range, CSD_Overwrite
In Idle State
Erase Reset
Illegal Command
Com CRC Error
Erase Sequence Error
Address Error
Parameter Error
Figure 5-8. R2 Response Format
The first byte is identical to response R1. The content of the second byte is described below:
• Erase param—An invalid selection, sectors 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—Only partial address space was erased due to existing WP blocks.
• Card is locked—Supported by the SanDisk Industrial Grade SD Card.
5.2.3.4. Format R3
This response token is sent by the card when a READ_OCR command is received. The response length is 5 bytes.
The structure of the first (MSB) byte is identical to response type R1. The other four bytes contain the OCR register.
39 3231 0
0
R1 OCR
Figure 5-9. R3 Response Format