SanDisk SDSDB-016G-A11 Product Manual page 85

Revision 2.2
2) R1b is identical to R1 with the additional busy signal transmitted on the data line.
3) R2 (CID, CSD register): response length 136 bits.
The content of the CID Register is sent as a response to CMD2 and CMD10. The content
of the CSD Register is sent as a response to CMD9. The only bits transferred are [127...1]
of the CID and CSD; the reserved bit (0) in these registers is replaced by the end bit of the
response.
Table 4-20
Bit Position
Width (bits)
Value
Description
4) R3 (OCR Register): response length 48 bits.
The contents of the OCR Register are sent as a response to CMD1.
Table 4-21
Bit Position
Width (bits)
Value
Description
R4 and R5: responses are not supported.
5) R6 (Published RCA response): response length 48 bits. Bits 45:40 indicate the response
command's index; in that case it will be 000011 (together w/bit 5 in the status bits it means
= CMD3. The 16 MSBs of the argument field are used for the published RCA number.
Table 4-22
Bit Position
Width (bits)
Value
Description
© 2004 SanDisk Corporation
Response R2
135 134
1 1
0 0
start bit transmission bit
Response R3
47 46
1 1
0 0
start bit transmission bit
Response R6
47 46
1 1
0 0
start bit transmission bit
4-41
Chapter 4 – SD Card Protocol Description
SanDisk SD Card Product Manual
[133:128] [127:1]
6 127
111111 x
reserved CID or CSD register incl.
internal CRC7
[45:40] [39:8]
6 32
111111 x
reserved OCR Register
[45:40] [39:8]
6 32
111111 x
reserved OCR Register
0
1
1
end bit
[7:1] 0
7 1
111111 1
reserved end bit
[7:1] 0
7 1
111111 1
reserved end bit
12/08/04