Microcontroller with 2 USB device controllers

[NiHaoMike]

Is there a microcontroller out there (preferably a PIC or low end ARM) that has two or more USB device controllers on the same chip? (USB 1.1 is enough.) Or would I be better off with two microcontrollers?

I'm actually making a custom programmable USB-USB bridge. One end (the host) controls the operation of the whole thing and the other end (target) emulates whatever the host wants to emulate. Of particular interest is emulating a keyboard, allowing a tablet with USB host to work like an Alphasmart sort of device.

[C]

STM32F407/417

http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1577/LN11

[lgbeno]

Maybe a ftdi Vinculum II.  Always looked like an interesting part...

[C]

Hi
Longer answer
Not so low end but I think the price is right.

http://www.digikey.com/product-detail/en/STM32F4DISCOVERY/497-11455-ND/2711743  $14.90
 
STM32F4DISCOVERY is based on an STM32F407VGT6 and includes an
ST-LINK/V2 embedded debug tool interface, ST MEMS digital accelerometer, ST MEMS digital microphone, audio DAC with integrated class D speaker driver, LEDs, pushbuttons and a USB OTG micro-AB connetor.

It is missing the second USB OTG micro-AB connetor, but these pins are on the Header un-used(PB12-PB15) .
So by adding a connector gives two USB FullSpeed(12mb) ports, one OTG(Host/Device) and one Device or Host. For second port as Host would need to add 5v power management and it too could be OTG.
 
Discover User Manual ww.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00039084.pdf

STM32F4DISCOVERY http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/PF252419

STM32F407VG http://www.st.com/web/catalog/mmc/FM141/SC1169/SS1577/LN11/PF252140
Datasheet http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00037051.pdf
reference_manual http://www.st.com/web/en/resource/technical/document/reference_manual/DM00031020.pdf
reference_manual Page 168 for USB USB Pins


C

[marshallh]

Many MCUs will have provisions for wiring up a second usb PHY via ULPI to work in addition to the internal one. This may be all you need.

[mikeselectricstuff]

If data rate is low, two low-end USB MCUs will probably be cheaper than a device with two USB interfaces, and give you a much wider choice of parts.

[notsob]

I've seen cypress.com USB chips in some products, you may have already looked at their USB product range, but if not I thought I'd mention them

Cheers

Peter

[westfw]

FTDI's "Vinculum 2" has dual USB ports.
But it's a weird chip and you pretty much have to use their libraries and OS (because they don't document it well enough to write your own low level code.)

[VanitarNordic]

Check STM32 series. They are somehow cheap also in comparison with other models.