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Message
From: Richard Herveille<richard@h...>
Date: Thu Apr 12 09:14:10 CEST 2007
Subject: [oc] recent i2c questions
In the diagram, it shows scl_pad_o going to the tri-state buffer
input. If it had shown a 0 going to the buffer, or had stated that
scl_pad_o is always 0, then it would have been clear. Without that,
it just basically says that you need to create an open drain, but
shows using a tri-state buffer.
[rih] OK, I'll add the line that scl_pad_o and sda_pad_o are always '0'.
Initially I had drawn a '0' (and the core did not output scl_pad_o or
sda_pad_o), but then people started complaining they did not understand the
'0'. So I though I'd make it simple, just hookup the signals and it works.
But apparently that confuses other people(sigh) :)
Richard
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