SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 59

• Manufacturer Part Number: SDMJ-32
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-32

• Density: 32MByte
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Package Type: MMC
• Mounting: Socket
• Pin Count: 7
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Programmable: Yes
• Lead Free Status / RoHS Status: Compliant

Revision 1.3
© 2005 SanDisk Corporation
4.7.1
Class 10-11
CMD41;
CMD43…CMD
54; CMD57-
CMD59
…CMD59
CMD60-
CMD63
Responses
All responses are sent on the CMD line. The response transmission always starts with the
MSB. The response length depends on the response type.
A response always starts with a start bit (0), followed by the bit indicating the direction of
transmission (card = 0). A value denoted by x in the Table 4-8 to 4-10 indicates a variable
entry. All responses except for the type R3 are protected by a CRC. The end bit (1)
terminates every response.
There are five types of responses supported in the SanDisk MultiMediaCard and RS-
MultiMediaCard. Their formats are defined as follows:
1) R1 (standard response): response length 48 bit.
Bits 45:40 indicate the index of the command to which it is responding. The status of the
card is coded in 32 bits.
Table 4-8
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; Bit [0] of these registers is replaced by the end bit of the response.
Command
Bit Position
Width (bits)
Value
Description
Reserved
Reserved for manufacturer
idle
start bit
47
1
0
Response R1
ready
transmission bit
ident
46
1
0
4-21
stby
MultiMediaCard/RS-MultiMediaCard Product Manual
command index
Current Status
Changes to
Chapter 4 – MultiMediaCard Protocol Description
tran
[45:40]
6
x
data
rcv
card status
[39:8]
32
x
prg
dis
CRC7
[7:1]
7
x
ina
04/22/05
end bit
0
1
1
irq