SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 70

• 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
5.8
Data Write
Figure 5-2
DataIn
In case of a data retrieval error, the card will not transmit any data. Instead, a special data
error token will be sent to the host. Figure 5-4 shows a single block-read operation, which
terminated with an error token rather than a data block.
Figure 5-4
The multiple block read operation can be terminated the same way by the error token
replacing a data block anywhere in the sequence. The host must then abort the operation by
sending the Stop Transmission command.
If the host sends a Stop Transmission command out of the valid sequence, it will be
responded to as an illegal command.
If the host uses partial blocks whose accumulated length is not block aligned and block
misalignment is not allowed, the card detects a block misalignment error condition at the
beginning of the first misaligned block (ADDRESS_ERROR error bit is set in the data
error token).
In SPI Mode, the MultiMediaCard/RS-MultiMediaCard supports single block or multiple
block write operations. Upon reception of a valid write command (CMD24 or CMD25), the
card will respond with a response token and wait for a data block to be sent from the host.
CRC suffix, block address, and start address restrictions are identical to the read operation.
If a CRC error is detected it will be reported in the data-response token and the data block
will not be programmed.
DataOut
DataIn
DataOut
From host
to card(s)
From Host
to Card
Command
Response
Command
Multiple Block Read Operation
Read Operation—Data Error
From card
to host
Data Block
Response
5-5
CRC
MultiMediaCard/RS-MultiMediaCard Product Manual
From Card
to Host
Data from
card to host
Data Block
Data Error
Next Command
CRC
Command
Stop
Transmission
command
Data Error
Token from
Card to Host
Data Block
Chapter 5 –SPI Mode
Command
Response
04/21/05