Path: ...!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Roger Hayter Newsgroups: sci.electronics.repair Subject: Re: Re (2): USB functionality. Date: 12 Mar 2024 17:28:18 GMT Organization: Metazoon Lines: 27 Message-ID: <6449818651.785da3d8@uninhabited.net> References: <2219572717.2fe80b82@uninhabited.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit X-Trace: individual.net w2tScfL2mRz7JGyNQbnbWQ88fBkGowR5XK07BW4zpIa1H5kEX+ Cancel-Lock: sha1:f4atRPLXT3d+WNQq6/noE9gYaYw= sha256:jkRnYQCyYTlonZI424Qrd5Mm1QM+dX6HDMXAGXlJttQ= User-Agent: Usenapp for MacOS X-Usenapp: v1.27.2/l - Full License Bytes: 2009 On 12 Mar 2024 at 16:29:31 GMT, "peter@easthope.ca" wrote: > In article <2219572717.2fe80b82@uninhabited.net>, Roger Hayter > wrote: >> But can even USB-C accept a signal input (keyboard and mouse for >> instance) and unrelated signal output (audio for instance) on the >> same physical socket? I ask only out of curiosity. > > The setup is rarely tried. Appears that nobody can reply. > > A keyboard or mouse sends tiny amounts of data; a few bytes per > second. In principle the link should be able to fit that in without > significant drop-outs in audio output. WIth so many details involved, > a general answer is difficult. When all else fails, we can test and > see what happens. =8~) > > Regards, ... P. So you could use an overarching protocol which was bilateral (ethernet anyone?) and send and separate messages both ways. What I was aksing was whether within the USB protocol there was provision for using some pins in for one electrical signal (bi or uni-directional) and other pins for another electrical signal. Because that would be the only way to do it without special software on at least one of the devices. -- Roger Hayter