On Tue, 08 Dec 2009, Henrique de Moraes Holschuh wrote: > http://www.datasheetcatalog.org/datasheet/panasonic/SDC00047AEB.pdf > > I am studying it, but at first glance, providing TLV data for this will not > make much sense. Well, it has EVR (electric volume regulation), a max of 6dB gain in the headphone path, and 17dB gain in the speaker path (but the speaker AGC makes it downright impossible to predict the final speaker gain if it is active). This assumes IBM or Lenovo didn't add any other op-amps to the audio path, of course. The line-out has constant gain, and it is routed to the dock station or port expander. Any TLV table based only on the AC97 or HDA mixer will be off because of this. We could have TLV figures for the headphone output, but what is the point since it won't match the speakers? And what would be the point of providing TLV data for the speakers, due to the AGC? I am inclined to not provide TLV data at all. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
