Timeline for USB-C Alternate Mode - ensure no activity on TX / RX pins during enumeration?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Aug 22 at 6:23 | comment | added | Justme | @Ale..chenski Oh OK sorry, I simply interpreted from the question that the pins are used in alt mode, and I should have see your comment meaning the same but just requesting to be clear on the terms pin vs function. | |
| Aug 22 at 6:07 | comment | added | Ale..chenski | @Justme, seriously? You didn't get the meaning of my comment? I am well aware of multiple use and re-use of standard TYPE-C pins that can perform in DIFFERENT ALTERNATIVE FUNCTIONS. But there is no special "alternate mode pins" that OP seems to want to re-use for some nonstandard analog channels. If the OP is concerned about signaling under accidental plug into a live USB host/device, he/she needs to specify precisely which standard pins he wants to reuse and protect. | |
| Aug 21 at 5:59 | comment | added | Justme | The next question for OP is, how do you intend to negotiate the custom usage, and does the device even need to connect to standard USB-C devices, and if yes, for what purpose? | |
| Aug 21 at 5:57 | answer | added | Justme | timeline score: 1 | |
| Aug 21 at 5:49 | comment | added | Justme | @Ale..chenski Seriously you are unaware? USB-C can be used for any purpose. You can e.g. use the connector for a passive headset adapter or debug adapter as long as your devices can recognize each other and change the function of pins accordingly. Just like sending DisplayPort in Alt-Mode over Type-C over the data pairs. It's also used for HDMI alt mode, Thunderbolt, etc. | |
| Aug 21 at 5:01 | comment | added | Ale..chenski | What do you mean under "the alternate mode pins of a USB-C connector"? USB-C connector has very well defined pin names, and I am not aware of any "alternate mode pins". Could you please use the established names of the USB-C connector? | |
| S Aug 21 at 1:09 | review | First questions | |||
| Aug 21 at 2:11 | |||||
| S Aug 21 at 1:09 | history | asked | frank | CC BY-SA 4.0 |