Hey !
Cool everything fit into my XC9572 and work like a charm :-)
Now should I used some decoupling for the xc9572, I/O change at low freq (around 2kHz ).
My question is how and how much ;-)
:-)
New XC9572 decoupling newbie question :-)
Feb 28, 2006
4 Replies
If you aren't switching a huge number of outputs, one 0.01uF or 0.1uF cap per power pin (there are three) and a single bulk cap of about 1uF should be perfectly adequate. I use that on a device connected to an AC97 chain (clock at 12.288MHz, outbound stream at 256kb/s) and it works just fine.
Cheers
PeteS
I should have said, rather than on a device on an AC97 chain, on a XC9572XL on an AC97 chain :)
Cheers
PeteS
I agree,
check Xilinx Application Note 73
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One of the last pages outlines the good approaches for decoupling.
Ben
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