Hi friends,
I'm looking at the DCI (digitally controlled impedance) part of the
Spartan-3 spec, and I'm wondering if I can use this to eliminate the series
termination resistors on an IDE interface. A typical IDE signal has a 22
ohm series resistor at the driver end and an 82 ohm series resistor at the
receiver end. Typical bi-directional signals have a 33 ohm series resistor
at both ends. can I use any of this? How? or do I need to stick to external termination?
Thank you!