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Thread: Different types of data transfers in usb

  1. #1
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    Nov 2009
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    Different types of data transfers in usb

    What are the types of data that is used for transferring data in USB. It is true that USB uses some types of different format by which a data is moved from the disc to the other part. I need some information on the same. What is the technology working behind that. What are the best features of this thing. Also post some relevant explanation on the types of data modes used in USB.

  2. #2
    Join Date
    May 2006
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    Re: Different types of data transfers in usb

    When the host powers up, it question all of the devices attached towards the bus and give all the one an address. This procedure is called specification. This devices are also specified when they are attached to the bus. By the host you can decide that what type of data transfer of you want to carry out: Interrupt - This mode is selected by a device like a mouse or a keyboard, which will be sending very less data.

  3. #3
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    Sep 2005
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    Re: Different types of data transfers in usb

    There are also some of the different type of date transfer which is called Bulk. You can take a example of a printer in which you can get the data in a big packet in this you have to use the bulk transfer mode. It is correct that the a block of data is sent to the printer (in 64-byte chunks). In the Isochronous you will not get the error correction and the data is in the steams and will host in the real time.

  4. #4
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    Re: Different types of data transfers in usb

    The host can also send controls or question limitations with control packets. As devices are specified, the host is keeping track of the entire bandwidth that all of the isochronous and suspend devices are requesting. They can put away up to 90 percent of the 480 Mbps of bandwidth that is obtainable. After 90 percent is used up, the host denies right of entry to any other isochronous or suspend devices. Control packets and packets for bulk relocates use any bandwidth left over (at least 10 percent).

  5. #5
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    Re: Different types of data transfers in usb

    The Universal Serial Bus separates the obtainable bandwidth into frames, and the host manages the frames. Frames include 1,500 bytes, and a new frame starts every millisecond. During a frame, isochronous and suspend devices get a slot so they are guaranteed the bandwidth they need. You can use what ever space is left by the help of the Bulk and control transfers.

  6. #6
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    May 2008
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    Re: Different types of data transfers in usb

    Different types of data transfers in USB and some feature of it. The Universal Serial Bus has the following characteristic. It this the computer act as a host. In this host you can connect up to 127 devices, direct or by using the way of USB hubs. If you are using the cable then you can use it up the long of 5 meters and by using the hub you can use it up to 30 meters. It van have a maximum data up to 480 megabits per second this are some of the features.

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