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simple 2 port usb hub

Discussion in 'Electronic Basics' started by James, Aug 24, 2004.

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  1. James

    James Guest

    I am trying to find a schematic for a very basic 2 port usb hub to extend on
    port into two for a small project i'm working on. I would just go and buy
    one but I want to integrate it into another board I have designed - can
    anyone help?

    I was thinking of something like a ATMEL AT43301 - any thoughts?

    It doesn't have to be fancy and can be a 'dumb' port.

    Thanks,

    J
     
  2. Uwe Bonnes

    Uwe Bonnes Guest

    : I am trying to find a schematic for a very basic 2 port usb hub to extend on
    : port into two for a small project i'm working on. I would just go and buy
    : one but I want to integrate it into another board I have designed - can
    : anyone help?

    : I was thinking of something like a ATMEL AT43301 - any thoughts?

    : It doesn't have to be fancy and can be a 'dumb' port.

    Have a look at http://www.necel.com/usb/en/product/upd720110.html.

    The schematics for the reference design is downloadable without
    registration. However I guess the the BOM of your onboard solution has much
    higher costs that the price of an external hub...

    Bye
     
  3. James

    James Guest

    Thats been discontinued :(

    any other mainsteam options?

    Thanks,
     
  4. Uwe Bonnes

    Uwe Bonnes Guest

    : Thats been discontinued :(

    Only the ?PD720160AGC-xxx-8EA...

    Bye
     
  5. James

    James Guest

    How about something like the USB 2502 from www.smsc.com? Can someone walk
    me through what I need for this circuit?

    Sorry to be such a noob but I've never worked with usb before.

    Thanks,
     
  6. Pat Deegan

    Pat Deegan Guest

    Greets,

    Craig Peacock can help--but you'll need to let him by doing a little
    reading... see the USB in a nutshell
    http://www.beyondlogic.org/usbnutshell/usb1.htm

    and other sections, like
    "USB with the simplicity of RS-232"
    (http://www.beyondlogic.org/usb/ftdi.htm)

    and all the info on the PDIUSBD11.

    HTH
     
  7. I've had some bad experiences in the last few days with a 5-port USB PCI
    card using that NEC chip. I bought a cheap one from Fry's for $18 and
    tried to install it. I printed out the instructions for the
    installation. The instructions said to click on the icon. But the
    idiots didn't include any autorun in the CD-ROM. So I went into the
    Windows folder and clicked on one of the three .EXE progs. It
    installed, but when I rebooted the PC failed to even recognize the card
    was in the slot. So I tried one of the other .EXEs, same result.

    I gave up, put it back in the box and will take it back. I bought a
    Belkin 5-port board for twice the price, and I'll install it tomorrow.
    I essentially paid twice the price for the same card, except I paid the
    extra to get software that actually works. :-(

    Cheap foreign knock-off. hardware is pretty much the same, but the
    software is abysmal.
     
  8. Graham W

    Graham W Guest

    Aren't you supposed to install the software drivers first - THEN add
    the PCI card and follow the 'New Hardware found' Wizard when it
    restarts?
     
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