On 6/21/2012 6:00 PM, Lyle Hazelwood wrote:
>> ...
>>
>> Presumably R/E is allowed so does one also have to buy a license in orde=
r
>> to use 4 bit mode?
>> Of for that matter SPI mode?
>>
>> R


 From what I've seen in recent research, it's apparently more than just=20
paying to get the standard, but also royalties for making/selling any=20
device that interfaces to SD cards using anything other than the SPI=20
interface.  See also=20
http://en.wikipedia.org/wiki/SD_card#Openness_of_the_standard
--=20
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