View sta304 datasheet:

STA304 DIGITAL AUDIO PROCESSOR WITH MULTICHANNEL DDX™ PRODUCT PREVIEW END TO END DIGITAL AUDIO INTEGRATED SOLUTION · DSP Functions: - DIGITAL VOLUME CONTROL - SOFT MUTE - BASS and TREBLE - PARAMETRIC EQ PER CHANNEL TQFP44 - BASS MANAGEMENT FOR SUBWOOFER ORDERING NUMBER: STA304 - AUTO MUTE ON ZERO INPUT DETECTION 4+1 DIRECT DIGITAL AMPLIFICATION (DDX™) OUTPUT CHANNELs EMBEDDED PLL FOR INTERNAL CLOCK 6 CHANNELs PROGRAMMABLE SERIAL GENERATION (1024x48 kHz = 49.152 MHz) OUTPUT INTERFACE (by default I2S) 24.576 MHz EXTERNAL INPUT CLOCK OR 4 CHANNELs PROGRAMMABLE SERIAL BUILT-IN INDUSTRY STANDARD XTAL INPUT INTERFACE (by default I2S) OSCILLATOR. STEREO S/PDIF INPUT INTERFACE Intel AC'97 LINK (rev. 2.1) INPUT INTERFACE 1.0 DESCRIPTION FOR AUDIO AND CON