[GALLERY=media, 2674]Xbox Audo Video Connector by Conte Zero posted Apr 26, 2018 at 7:17 PM[/GALLERY] The back panel of the original Xbox label the audio video connector as "input/output". Output was obvious but... "input"? The xbox doesn't have video input capabilities, at least not thru that connector. Maybe was something planned and never included in the final revision? The weird thing is, event thru 6 different revisions of the motherboard no-one bothered to change the label of the connector.
I can't imagine any A/V input on an original XBox, or what theyd even do with it, so I think its probably just a weird clerical thing.
I made a thread on this very thing years ago. The theory was that the Mode Select pins are considered the "inputs" as it sends a signal to the video encoder to detect which cable is connected. Not sure if we should call them "audio/video inputs" but hey, it makes sense in some twisted way. EDIT: To the tech guys here: Am I correct in assuming the Mode Select pins are for Composite/S-Video, RGB, and YPbPr?
My best guess is that they took inspiration from the scart AV connector that has audio/video inputs and outputs. Scart has 21 pin whether the xbox uses 24 so there are enough pins for everything. But it's just an idea and I would like to see some other opinion. Mode pins select are used for selecting video out and enabling digital audio out.
I was reading the "Project: XBOX Hardware Design specification" https://www.clangsm.com/forum/uploads/monthly_09_2011/post-12456-1316219562.ipb And it seems that the video input are really only for selecting the cable type. Thank to anyone that answered, I still think that is a dumb labelling for the connector 1.5.2. Audio Video Interface Port (AVIP) This multi-pin port consists of all electrical input and output ports supported by the graphics processor and audio codec. The AVIP includes video output signals, audio output signals, and selector inputs used to identify the type of adapter connected to the AVIP port. By setting the logic states of the AVIP inputs, the adapter may select CVBS+Y/C (NTSC, PAL), CVBS + RGB (PAL SCART) or YPrPb HDTV outputs. The AVIP has two audio interface ports; linelevel stereo audio (left and right channels) is output directly, and a logic-level SPDIF output is provided for interface to an external coaxial or fiber optic driver.
