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MMC / SD Spi Interface

E

Ezmeralda

Jan 1, 1970
0
Hello,

what is the maximum possible speed on SPI Interface for MMC and SD
cards?
Is there any difference between the cards? Is it possible to do SPI
communication
with the new high speed rates defined ~50MHz or is the high speed rate
possible
via parallel interface only?

Thanks!
 
D

Donald

Jan 1, 1970
0
Ezmeralda said:
Hello,

what is the maximum possible speed on SPI Interface for MMC and SD
cards?
Is there any difference between the cards? Is it possible to do SPI
communication
with the new high speed rates defined ~50MHz or is the high speed rate
possible
via parallel interface only?

Thanks!
Conversion of parallel to serial (SPI) is done all the time.

The question is how do you want to do it ?

Are you looking for an off-the-shelf solution or
do you want to design, build, troubleshoot your own.

donald

PS: I have not seen a off-the-shelf parallel to MMC/SD device.

PPS: Speed of download to an SD card is only part of the time involved,
there is also internal burn timing to consider.

good luck
 
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