m.rbiza...@mailoo.org wrote: > Hello, > Some DAC manufacturer or diy seller use I2S input in their dac via LVDS > > transmitter/receiver. For example audio-gd use them in their high end > dac with RJ45 cable and twisted pair audio sell a similar module call > Teleporter. Psaudio have also propose free standard over hdmi cable > (since some diy board exist with this standard) : > http://www.diyaudio.com/forums/digital-line-level/164366-i2s-standards-ps-audio-2.html > > As this king of connexion seems more audiophile than spdif/tosling or > usb and also very easy to integrate to existing dac, could it be > possible to make it work on the wandboard and Community Squeeze > Operating System ? I red in previous post that a member of the > community, JackOfAll, develop an i2s driver, could it work with this > standard ? > > Thank you
The I2S coming out of the Wandboard is not LVDS, it is standard CMOS level. An adapter would have to be built to take the I2S signals and run them through LVDS transmitters. Whether it is better than another transport mechanism depends entirely on the DAC implementation. A really good asynchronous USB will beat the LVDS I2S. There is an interesting possibility with the CSP hardware, it has an I2S output and clock input that will work directly with the driver for the CSP hardware, no software change required. You could build a DAC that has an ultra low jitter local clock, feed the clock to CSP, take the I2S out to the DAC and reclock with the local clock in the DAC. You can use LVDS or standard CMOS for the interface depending on how far the DAC is from the CSP. If you put both in the same box so the boards are a couple inches apart you probably don't need LVDS. If they are in separate boxes a foot or so apart then LVDS is a good choice. John S. ------------------------------------------------------------------------ JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=100961 _______________________________________________ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
