Electronics > Projects, Designs, and Technical Stuff
PCIe (any version), usb 2.0 bridge ICs
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lk:
Greetings,
I was planning to make my own PCI to USB adapter card, and naive as i was i just expected the bridge chips to be readily available. The only ones i found are  10 USD and up, and as i expect to fail several times before i make this work. I would like something that is cheaper. Does anyone know of an IC that might fit these requirements?
I plan to hand solder it, so a package with leads would be appreciated.

I have looked at asix, Diodes Inc and TI parts, all very expensive.

Does anyone know of a chip that might work, i was surprised that the choices on digikey were so limited.

br
Lasse
Monkeh:
I assume what you mean is a USB host controller. These are indeed not readily available, and it's going to cost you a lot more than just finding a card.
photon:
Hi,

For PCI to USB2 check out the PLX (now Broadcom) part for $15.50 at Digikey.

Manufacturer Part Number   
USB2380-AB25NI G
Description   IC CONTROLLER PCI USB 2.0 88QFN

For PCIe to USB2 check out the PLX part below for $19.32:

Manufacturer Part Number   
USB3380-AB50NI G
Description   IC CONTROLLER PCI USB 2.0 88QFN

The above are USB endpoint controllers.

For USB host controllers the silicon is a lot cheaper. Check out the Microchip part below for $1.30 at Digikey.

Manufacturer Part Number   
USB3300-EZK
Description   IC USB HOST/OTG PHY ULPI 32-QFN

Note that Microchip stole the PLX part number. :)

photon:
The ASM1042 is a USB host controller. Not on Digikey but I find it on ebay for $4.38.

https://www.ebay.com/itm/ASMEDIA-ASM1042-ASM-1042-QFN-64-IC-Chip-ASMT-USB-3-0-Extension/331728447596?hash=item4d3c8e686c:g:EJwAAOSwPcVVgn1~

The best I can tell, the ASM USB device controllers are SATA to USB.
Monkeh:

--- Quote from: photon on October 31, 2017, 07:31:48 pm ---For USB host controllers the silicon is a lot cheaper. Check out the Microchip part below for $1.30 at Digikey.

Manufacturer Part Number   
USB3300-EZK
Description   IC USB HOST/OTG PHY ULPI 32-QFN

Note that Microchip stole the PLX part number. :)

--- End quote ---

That is.. not a host controller. That's a PHY.
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