STA304A

STA304A DIGITAL AUDIO PROCESSOR WITH MULTICHANNEL DDX™ „ STA304AEND TO END DIGITAL AUDIO INTEGRATED SOLUTION „ · DSP Functions: - DIGITAL VOLUME CONTROL - SOFT MUTE - BASS and TREBLE - PARAMETRIC EQ PER CHANNEL - BASS MANAGEMENT FOR SUBWOOFER - AUTO MUTE ON ZERO INPUT DETECTION „ 4+1 DIRECT DIGITAL AMPLIFICATION (DDX™) OUTPUT CHANNELs „ 6 CHANNELs PROGRAMMABLE SERIAL OUTPUT INTERFACE (by default I2S) „ 4 CHANNELs PROGRAMMABLE SERIAL INPUT INTERFACE (by default I2S) „ STEREO S/PDIF INPUT INTERFACE „ Intel AC'97 LINK (rev. 2.1) INPUT INTERFACE FOR AUDIO AND CONTROL „ ON CHIP AUTOMATIC INPUT SAMPLING FREQUENCY DETECTION „ 100 dB SNR SAMPLE RATE CONVERTER (1KHz SINUSOIDAL INPUT) „ I2C CONTROL BUS -„ LOW POWER 3.3V CMOS TECHNOLOGY )BLOCK DIAGRAM t(sSA SCL SDA 11 10 9 ucLRCKI/ SYNC dBICKI / BIT_CL 3 4 roSDI_1 / SDATA_OUT 1 SDI_2 / SDATA_IN 2 PRXP 18 bsolete RXN 19 I2S S/PDIF I2C SRC AC`97 TQFP44 ORDERING NUMBER: STA304A t(s)„ EMBEDDED PLL FOR INTERNAL CLOCK cGENERATION (1024x48 kHz = 49.152 MHz) u„ 6.144 MHz EXTERNAL INPUT CLOCK OR dBUILT-IN INDUSTRY STANDARD XTAL roOSCILLATOR „ VARIABLE DIGITAL GAIN UP TO 24dB P(0.75dB STEP) te1.0 DESCRIPTION leThe STA304A Digital Audio Processor is a single ochip device implementing end to end digital solution sfor audio application. In conjunction with STA500 bpower bridge it gives the full digital DSP-to-power Ohigh quality chain with no need for audio Digital-to- Analog converters between DSP and power stage. R...