# simple 2 port usb hub

J

#### James

Jan 1, 1970
0
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

U

#### Uwe Bonnes

Jan 1, 1970
0
: 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.

registration. However I guess the the BOM of your onboard solution has much
higher costs that the price of an external hub...

Bye

J

#### James

Jan 1, 1970
0
Thats been discontinued

any other mainsteam options?

Thanks,

U

#### Uwe Bonnes

Jan 1, 1970
0
: Thats been discontinued

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

Bye

J

#### James

Jan 1, 1970
0
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,

P

#### Pat Deegan

Jan 1, 1970
0
Greets,

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?

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

W

#### Watson A.Name - \Watt Sun, the Dark Remover\

Jan 1, 1970
0
Uwe Bonnes said:
: 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.

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. G #### Graham W Jan 1, 1970 0 Watson said: 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.

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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