Matrix audio x-spdif I2s no sound.

[Wei Cao]

What's your source device before the X-SPDIF 2? A Windows PC or a MAC?
When the IIS cable conected, how did the screen of D90 displayed? Is there sampling rates shown in D90's screen?
Can you check the XMOS firmware version of your X-SPDIF 2 by the Matrix Audio Control Panel? Like the screenshot below: