MMC & CF memory was Using 3.5" HD drives on CP/M systems

From: Randy McLaughlin <randy_at_s100-manuals.com>
Date: Wed Feb 2 18:43:40 2005

From: <jpero_at_sympatico.ca>
Sent: Wednesday, February 02, 2005 1:32 PM
<snip>
>> MMC is a snap to implement, the only "problems" are efficiently driving
>> it
>> at a reasonable speed and they are 3.3v. MMC uses a very simple serial
>> interface where every bit is clocked in or out by the host system. It
>> can
>> be done entirely in software by shifting each bit in or out but then it
>> is
>> sloooow.
>
> What kind of protocol that MMC talks in serial fashion?

SPI.

<snip>

Randy
www.s100-manuals.com
Received on Wed Feb 02 2005 - 18:43:40 GMT