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USB communication Protocole

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gafsos

gafsos

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Hello

Simple question

Why Up to 127 devices can be connected to any one USB bus at any one given time ??

Big Thanks
gafsos
 

In USB the address of the device is 7 bits so there is a possibility of 128 addresses.
Device address 0 is reserved for unconfigured devices and a device will have this address initially when it is plugged in.
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Cypress Semiconductor

Alex
 
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