CS4299 CrystalClear SoundFusion Audio Codec 97 Meets or Exceeds the Microsoft PC 99 Features Audio Performance Requirements AC 97 2.1 Compatible S/PDIF Digital Audio Output Industry Leading Mixed Signal Technology CrystalClear 3D Stereo Enhancement 20-bit Stereo Digital-to-Analog Converters Description 18-bit Stereo Analog-to-Digital Converters The CS4299 is an AC 97 2.1 compatible stereo audio codec designed for PC multimedia systems. Using the Sample Rate Converters industry leading CrystalClear delta-sigma and mixed Four Analog Line-level Stereo Inputs for signal technology, the CS4299 enables the design of LINE IN, CD, VIDEO, and AUX PC 99-compliant desktop, portable, and entertainment PCs. Two Analog Line-level Mono Inputs for Coupling the CS4299 with a PCI audio accelerator or Modem and Internal PC Beep core logic supporting the AC 97 interface, implements a Dual Stereo Line-level Outputs for LINE cost effective, superior quality, audio solution. The OUT and ALT LINE OUT CS4299 surpasses PC 99 and AC 97 2.1 audio quality standards. Dual Microphone Inputs ORDERING INFO High Quality Pseudo-Differential CD Input CS4299-BQZ lead-free 48-pin LQFP 9x9x1.4 mm Extensive Power Management Support CS4299-JQZ lead-free 48-pin LQFP 9x9x1.4 mm AC-LINK AND AC 97 ANALOG INPUT MUX REGISTERS AND OUTPUT MIXER PWR LINE MGT CD SYNC AUX BIT CLK ADC VIDEO SRC PCM DATA INPUT AC- 18 bits SDATA OUT MUX LINK SDATA IN MIC1 RESET MIC2 GAIN / MUTE CONTROLS PHONE MIXER / MUX SELECTS PC BEEP AC 97 OUTPUT REGISTERS MIXER LINE OUT DAC SRC PCM DATA ALT LINE OUT 20 bits MONO OUT S/PDIF JUN 15 Copyright Cirrus Logic, Inc. 20012015 (All Rights Reserved) DS319F1 CS4299 Table of Contents 1 Characteristics and specifications ............................................................................................................................. 4 2 General Description ...................................................................................................................................................... 9 2.1 AC-Link .................................................................................................................................................................. 9 2.2 Control registers ................................................................................................................................................... 9 2.3 Sample Rate Converters ....................................................................................................................................... 9 2.4 Output Mixer ........................................................................................................................................................ 10 2.5 Input Mux ............................................................................................................................................................. 10 2.6 Volume Control .................................................................................................................................................... 10 3 AC Link Frame Definition ........................................................................................................................................... 11 3.1 AC-Link Serial Data Output Frame ...................................................................................................................... 12 3.2 AC-Link Audio Input Frame ................................................................................................................................. 14 3.3 AC-Link Protocol Violation - Loss of SYNC ......................................................................................................... 16 4 Register Interface ....................................................................................................................................................... 17 5 Power Management .................................................................................................................................................... 31 5.1 AC 97 Reset Modes ............................................................................................................................................ 31 5.1.1 Cold AC 97 Reset ...................................................................................................................................... 31 5.1.2 Warm AC 97 Reset .................................................................................................................................... 31 5.1.3 Register AC 97 Reset ................................................................................................................................ 31 5.2 Powerdown Controls ........................................................................................................................................... 32 6 Analog Hardware Description ................................................................................................................................... 34 6.1 Analog Inputs ....................................................................................................................................................... 34 6.1.1 Line-Level Inputs ........................................................................................................................................ 34 6.1.2 CD Input ..................................................................................................................................................... 34 6.1.3 Microphone Inputs ...................................................................................................................................... 35 6.1.4 PC Beep Input ............................................................................................................................................ 35 6.1.5 Phone Input ................................................................................................................................................ 36 6.2 Analog Outputs .................................................................................................................................................... 36 6.2.1 Stereo Outputs ........................................................................................................................................... 36 6.2.2 Mono Output ............................................................................................................................................... 37 6.3 Miscellaneous Analog Signals ............................................................................................................................. 37 6.4 Power Supplies .................................................................................................................................................... 37 6.5 Reference Design ................................................................................................................................................ 37 7 Sony/Philips Digital Interface (S/PDIF) ..................................................................................................................... 38 8 Grounding and Layout ............................................................................................................................................... 38 9 Pin Descriptions ......................................................................................................................................................... 40 10 Parameter and Term Definitions ............................................................................................................................. 45 11 Reference Design .................................................................................................................................................... 47 12 References ................................................................................................................................................................ 48 13 Package Dimensions ................................................................................................................................................ 49 14 Revision History ....................................................................................................................................................... 50 2 DS319F1