View sta304a datasheet:

STA304A DIGITAL AUDIO PROCESSOR WITH MULTICHANNEL DDX� PRODUCT PREVIEW STA304AEND TO END DIGITAL AUDIO INTEGRATED SOLUTION � DSP Functions: - DIGITAL VOLUME CONTROL - SOFT MUTE - BASS and TREBLE TQFP44 - PARAMETRIC EQ PER CHANNEL ORDERING NUMBER: STA304A - BASS MANAGEMENT FOR SUBWOOFER - AUTO MUTE ON ZERO INPUT DETECTION 4+1 DIRECT DIGITAL AMPLIFICATION EMBEDDED PLL FOR INTERNAL CLOCK (DDX�) OUTPUT CHANNELs GENERATION (1024x48 kHz = 49.152 MHz) 6 CHANNELs PROGRAMMABLE SERIAL 6.144 MHz EXTERNAL INPUT CLOCK OR OUTPUT INTERFACE (by default I2S) BUILT-IN INDUSTRY STANDARD XTAL 4 CHANNELs PROGRAMMABLE SERIAL OSCILLATOR INPUT INTERFACE (by default I2S) VARIABLE DIGITAL GAIN UP TO 24dB STEREO S/PDIF INPUT INTERFACE (0.75dB STEP) Intel AC'97 LINK (rev.