Electronics > Projects, Designs, and Technical Stuff
PCIe (any version), usb 2.0 bridge ICs
macboy:
--- Quote from: NiHaoMike on November 01, 2017, 02:42:15 pm ---This one uses a NEC chipset:
https://www.newegg.com/Product/Product.aspx?Item=9SIA67049F0952
I would forget about trying to DIY one unless you really know how to design a PCB for high frequencies. PCIe has a working frequency well into the GHz.
--- End quote ---
Not knowing high frequency PCB design has never stopped the guys who are making those cheap boards. I have one particularly bad PCI to SATA controller at home where one channel has a choice of either internal or external connector. They just split the SATA signals and wired them to both connectors, resulting in a 3 cm or so stub no matter which connector was used! With 1.5 Gbps signals! :palm: No wonder it never worked well.
Ysjoelfir:
Hey, sorry for digging out this ancient thread. I am searching for something like this for a hobby project right now and wasn't very successfull. Has somebody found more chips until now?
I basically want something, that allows me to stick a single USB Device directly into the PCIe Bus. So a single channel PCIe to USB converter. The goal is to connect one of TIs nice USB Sound Card Chips using PCI-express. I basically want to build my very own audiophool pci-e soundcard. Since I don't know anything about the digital part of this hole idea I am looking for a simplest solution with premade drivers that just works plug and play.
Is there something in existence that works like that? The price for this chip isn't really a problem since I just want to build this thing for fun.
NiHaoMike:
--- Quote from: Ysjoelfir on May 27, 2019, 07:10:37 pm ---Hey, sorry for digging out this ancient thread. I am searching for something like this for a hobby project right now and wasn't very successfull. Has somebody found more chips until now?
I basically want something, that allows me to stick a single USB Device directly into the PCIe Bus. So a single channel PCIe to USB converter. The goal is to connect one of TIs nice USB Sound Card Chips using PCI-express. I basically want to build my very own audiophool pci-e soundcard. Since I don't know anything about the digital part of this hole idea I am looking for a simplest solution with premade drivers that just works plug and play.
Is there something in existence that works like that? The price for this chip isn't really a problem since I just want to build this thing for fun.
--- End quote ---
Sounds like a solution looking for a problem. I can't think of any machine that has PCIe but not USB.
Just get a PCIe USB card, desolder one of the USB sockets, and build your sound card on that. But why not make a S/PDIF or HDMI connected unit instead? (In the latter case, buy a HDMI audio extractor and replace the DAC in it with a better one.)
Ysjoelfir:
Part of the Challenge I put myself on is the Pci-e Connection. Sure, I could just repurpose an usb expander, but where is the fun in that? ;)
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