24 channels USB to I2S interface (with Source codes, ASIO/VHDL/Schematic) - Page 8 - diyAudio
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Old 17th September 2013, 10:15 AM   #71
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ASIO + FTDI Bulk + FPGA
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Old 14th October 2014, 04:13 AM   #72
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I'm just curious if the great work being done on a "simplified USB Digital converter, only usses FTDI + FIFO + DIP devices" by Koon and deanbob is now dead. If not, is the discussion elsewhere?

I'm interested in a cost-effective but good alternative to the MiniDSP USBStreamer for 8 channels. The fact that Koon has already written an ASIO driver for this hardware is pretty significant. Most XMOS alternatives to the USBStreamer seem to use a proprietary, evaluation driver that is crippled.
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Old 14th October 2014, 05:24 PM   #73
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Hi, I'm using exaU2I www.exadevices.com > exaU2I > Overview which is 8 channel USB-FTDI-FPGA-I2S, and satisfied. exaU2I is stable and isolated.
my simple converter just shows how FTDI / FIFO / Logic / I2S works.
Also I posted small FPGA version. Anyone can modify it.

...OMG, exaU2I is discontinued? I will build mine again when my exaU2I is broken, with "DLP-2232H-SF High-Speed FPGA Module" or something like this

Writing ASIO driver interface was not difficult, only a transfer from buffer to buffer.
I have no idea why XMOS does not supply ASIO.
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Old 15th October 2014, 12:21 AM   #74
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Thank you, KOON3876. Yes, it's a shame that the exaU2I was discontinued.
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Old 24th November 2014, 09:53 PM   #75
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Hi KOON!
I am interested in your converter USB – 8xI2S. I could buy a USBStreamer, but it does not have the correct clock. I want to repeat this construction, but I want to use a chip FT2232 with additional elements instead of the module. In addition, I want to use instead of quartz 12MHz divided by 2 24MHz frequency. Is this OK? In the diagram SCH02.png drawn 2 modules, FT2232H & FT232. As I understand it, only one is needed.

Last edited by alex0; 24th November 2014 at 09:59 PM.
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Old 24th November 2014, 10:50 PM   #76
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Hi Alex0, yes you can modify and reproduce as you like.
Yes, FT2232H OR FT232, just one needed. Good luck
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Old 25th November 2014, 09:30 AM   #77
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Quote:
Originally Posted by KOON3876 View Post
Hi Alex0, yes you can modify and reproduce as you like.
Yes, FT2232H OR FT232, just one needed. Good luck
Thank you, KOON!
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