AD1885

a AC’97 2.1 FEATURES Variable Sample Rate True Line-Level Output Supports Secondary Codec Modes AC’97 SoundMAX® Codec AD1881A ENHANCED FEATURES Mobile Low Power Mixer Mode Digital Audio Mixer Mode Full Duplex Variable 8 kHz to 48 kHz Sampling Rate with 1 Hz Resolution PHAT™ Stereo 3D Stereo Enhancement Split Power Supplies (3.3 V Digital/5 V Analog) Extended 6-Bit Master Volume Control Audio Amp Power-Down Signal AC’97 FEATURES Designed for AC’97 Analog I/O Component 48-Lead LQFP Package Multibit ⌺⌬ Converter Architecture for Improved S/N Ratio Greater than 90 dB 16-Bit Stereo Full-Duplex Codec Four Analog Line-Level Stereo Inputs for Connection from LINE, CD, VIDEO, and AUX Two Analog Line-Level Mono Inputs for Speakerphone and PC BEEP Mono MIC Input Switchable from Two External Sources High Quality CD Input with Ground Sense Stereo Line-Level Output Mono Output for Speakerphone or Internal Speaker Power Management Support FUNCTIONAL BLOCK DIAGRAM CS0 CS1 EAPD MODE AD1881A MODE/SYNCHRONIZER MIC1 MIC2 LINE_IN 0dB/ 20dB CD VIDEO PHONE_IN SELECTOR AUX PGA 16-BIT ⌺⌬ A/D CONVERTER PGA 16-BIT ⌺⌬ A/D CONVERTER RESET SYNC MONO_OUT MV AC LINK ⌺ LNLVL_OUT_L ⌺ ⌺ POP G A M ⌺ G A M G A M G A M G A M G A M SAMPLE RATE GENERATORS BIT_CLK SDATA_OUT G A M LINE_OUT_L MV D A M PHAT STEREO ⌺ ⌺ ⌺ ⌺ ⌺ ⌺ NC 16-BIT ⌺⌬ D/A CONVERTER ⌺ SDATA_IN LINE_OUT_R MV ⌺ POP PHAT STEREO ⌺ ⌺ ⌺ ⌺ ⌺ ⌺ NC G A M 16-BIT ⌺⌬ D/A CONVERTER ⌺ LNLVL_OUT_R A M PC_BEEP ...