Re: 6522 VIA inputs

Date: Fri, 21 Apr 2017 11:44:10 +0200
Message-Id: <>
> On 2017-04-21, at 11:32, Konrad B <> wrote:
> "There are no pullups whatsoever."
> Are you 100% sure about this?

About 1541 providing no pullups for those lines - yes. As for the VIA internal ones - no, I am not. That's what made me ask.

> Check Rockwell's or UMC's datasheets.
> Hint: resistor would have to take a lot of the die space, it's easier
> to use a transistor for this purpose.

That figure ("Figure 3.") in the Rockwell datasheet ("Figure 2." as well) shows a resistance there. I don't know if this is implemented as an on-die resistor or is it only more like a functional schematic and the actual pullup is realised in another way. And I still assume that this is in fact what I was looking for.

SD! -

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Received on 2017-04-21 10:02:52

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