USB 2.0 Full-Speed compliant supported USB Audio Class 1.0 16/24 bit Resolutions supported 8/16/32/44.1/48/96 KHz sampling rates supported 2-input channels and 2-output channels supported by one I2S pairs with independent sample rate Built in IEC60958 professional S/PDIF TX & RX, AES/EBU supported 8 GPIO pins with interrupt Built-in ROM for USB descriptor (support up to 16-bit/48KHz) Two-wire MPU interface Built in 1.8V LDO for core voltage 3.3V Operation Voltage 0.18 um CMOS process LQFP-48 pac.