USB Audio，Digital Output and Clock Module
This module provides a USB 2.0 port, an i2s (HDMI) port, an AES port and a SPDIF (RCA) port to connect DAC. It is designd with onboard linear power supply. Additionally, it uses independent PCIE bus of CelHeart-G1 for low latency. All digital signals use FIFO and RECLOCK technology. At the same time, this module have the CelCLK II PLL system, with an on-board 50MHz OCXO (-85dB@1Hz, 1e-11@1s) as the VCO clock source, a BNC and a SMA 10MHz input. This module is a mandatory module for NS6U.