В сообщении от 28 июня 2010 17:15:40 автор Mark Brown написал: > What I'm trying to figure out is if the GPIO is wired directly to the > UDA1380 or if this is controlling something external to the UDA1380 > which these designs just happen to have copied. If it's a direct > connection to the UDA1380 then using GPIOs directly is perfectly > sensible. I'm not sure if s3c24xx GPIOs can drive UDA1380 directly. I suspect it's wired to the gate of some transistor (FET - is it right term to use here? :)) to handle higher current (sorry, English is not my native language, and it's hard to explain schematic-specific things, that's not my field :)). Btw, I'm sure that there's no any external power-control chip, maybe just single transistor. Regards Vasily
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