What is the difference between Usb Hub and usb host..?

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Arunassmv
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What is the difference between Usb Hub and usb host..?

Post by Arunassmv » Mon Feb 28, 2011 8:00 pm

Please tell me What is the difference between Usb Hub and usb host..?
Thanks for your cooperation..........
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Shane
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Re: What is the difference between Usb Hub and usb host..?

Post by Shane » Mon Feb 28, 2011 9:06 pm

USB Host Controller
A hi-speed USB host controller refers to the hardware inside the computer that provides hi-speed USB functionality to the ports. One hi-speed USB host controller can control several USB ports.

USB Hub
A USB Hub which plugs into a single USB port and offer several USB ports. USB Hubs can exist internally or externally to the computer.
Arunassmv
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Re: What is the difference between Usb Hub and usb host..?

Post by Arunassmv » Mon Feb 28, 2011 10:30 pm

Thanks a lot sir.............
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SemiconductorCat
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Re: What is the difference between Usb Hub and usb host..?

Post by SemiconductorCat » Thu Apr 26, 2012 9:37 pm

^ Not essentially true.

USB host refers to the USB controller, that convert USB packets and keep them in a buffer that to be read
by the CPU.

USB hub means a USB device where you could connect more USB devices and it encodes and sends them to
the USB host.

A USB port is not a port that USB device could be connected. And it should not essentially be a USB host. You
could add up to 127 ports per a one USB host.

Read the USB in nutshell book ,you'll get it all clear.
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