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CS4297-KQ Arkusz danych(PDF) 2 Page - Cirrus Logic |
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CS4297-KQ Arkusz danych(HTML) 2 Page - Cirrus Logic |
2 / 46 page 2 DS242F5 CS4297 CrystalClear™ SoundFusion™ Audio Codec ’97 TABLE OF CONTENTS CHARACTERISTICS AND SPECIFICATIONS.....................................................4 Analog Characteristics .................................................................................4 Mixer Characteristics....................................................................................5 Absolute Maximum Ratings .........................................................................5 Recommended Operating Conditions ..........................................................5 Power Down States......................................................................................6 Digital Filter Characteristics .........................................................................6 Digital Characteristics ..................................................................................7 Serial Port Timing.........................................................................................7 Serial Port Timing.........................................................................................8 PARAMETER AND TERM DEFINITIONS ..........................................................10 GENERAL DESCRIPTION .................................................................................12 Overview ...................................................................................................12 Digital Section ...........................................................................................12 AC-Link ...............................................................................................12 AC’97 Register Interface .....................................................................12 Power Management ............................................................................12 Analog Section ..........................................................................................12 Output Mixer .......................................................................................12 Input Mux ............................................................................................12 Volume Control ...................................................................................12 AC’97 IMPLEMENTATION ................................................................................13 DIGITAL HARDWARE DESCRIPTION ..............................................................15 AC’97 AC-Link ...........................................................................................15 AC-Link Protocol .................................................................................15 AC-Link Serial Data Output Frame ...........................................................15 Slot 0: Serial Data Output Slot Tags ...................................................16 Slot 1: AC’97 Register Address ..........................................................16 Slot 2: AC’97 Register Write Data ......................................................17 Slot 3: Left Channel PCM Playback Data ...........................................17 Slot 4: Right Channel PCM Playback Data .........................................17 AC-Link Audio Input Frame .......................................................................18 Slot 0: Serial Data Input Slot Tag Bits ................................................18 Slot 1: Read-Back Address Port .........................................................19 Slot 2: Read-Back Data Port ...............................................................19 Slot 3: Left Channel PCM Capture Data .............................................19 Slot 4: Right Channel PCM Capture Data ..........................................20 AC-Link Reset Modes ...............................................................................21 Cold AC’97 Reset ...............................................................................21 Warm AC’97 Reset .............................................................................21 AC’97 Register Reset .........................................................................21 AC-Link Protocol Violation - Loss of SYNC ...............................................21 REGISTER INTERFACE .....................................................................................22 Reset Register (Index 00h) .................................................................23 Master Volume (Index 02h) ................................................................23 Alternate Volume (Index 04h) .............................................................23 Master Mono Volume (Index 06h) ......................................................23 PC_BEEP Volume (Index 0Ah) ..........................................................24 Phone_In Volume (Index 0Ch) ...........................................................24 Microphone Volume (Index 0Eh) ........................................................24 Stereo Analog Mixer Input Gain Registers (Index 10 - 18h) ...............25 |
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