FC5025 USB 5.25 floppy controller - first report

Chuck Guzis cclist at sydex.com
Wed Feb 24 15:42:56 CST 2010

On 24 Feb 2010 at 12:57, Steven Hirsch wrote:

> Ok, so you are not conditioning the data lines?  That's where I had
> the notion that bidirectional buffers were needed.

No, not at all.  All data lines are unidirectional (e.g. READ DATA, 
WRITE DATA, WRITE GATE).  We're just matching the drive specs of the 
two devices.  You could, if you wanted, insert a schmitt trigger 
device on the read data line for some conditioning (e.g. 74LS14).


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