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TS3USB221A: On-the-fly switch between two USB devices

Jay Yeh
Intellectual 465 points
Part Number: TS3USB221A

Hi all,

I am designing a USB product which has one mass storage device and one mouse and I would like to use one multiplexer like TS3USB221A to determine which device should be exposed to the host device, like PC.

My questions is: Is it possible to switch between two USB devices while my product is already connected to PC?

There might be a scenario that my product initially works as a mass storage device when connected the PC and user could press a button to switch to mouse mode.

My concern is that will the USB enumeration process happen again while switching the D+ and D- using the TS3USB221A ?

Jay