Hello guys,
I am developing a bridge device between two other devices(suppose Dev #1(master) and #2(slave)) and now I am stacked with the following problem:
My bridge has 2 USB connectors, USB-A plug and USB-B plug. The master device is connected over the special connector, over this connector 2,2V and !POWER_EN are devilered to the bridge. And it is necessary to make a switch between two USB plugs and these two signals in that way that only in the case when these two pins are high to allow the voltage flowing from A to B. I have drawn and attached the primitive logical scheme how I see this should work. To make AND and OR I have to transistors to build logic gates, but switch is a big problem, because a switch has 2 lines only, so how to connect the third one?
I am developing a bridge device between two other devices(suppose Dev #1(master) and #2(slave)) and now I am stacked with the following problem:
My bridge has 2 USB connectors, USB-A plug and USB-B plug. The master device is connected over the special connector, over this connector 2,2V and !POWER_EN are devilered to the bridge. And it is necessary to make a switch between two USB plugs and these two signals in that way that only in the case when these two pins are high to allow the voltage flowing from A to B. I have drawn and attached the primitive logical scheme how I see this should work. To make AND and OR I have to transistors to build logic gates, but switch is a big problem, because a switch has 2 lines only, so how to connect the third one?
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