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CS4237B Datasheet(PDF) 2 Page - Cirrus Logic |
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CS4237B Datasheet(HTML) 2 Page - Cirrus Logic |
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2 / 114 page  TABLE OF CONTENTS CS4237B PERFORMANCE SPECIFICATIONS 3 GENERAL DESCRIPTION ................................. 12 ISA Bus Interface............................................. 13 PLUG AND PLAY ............................................... 15 PnP Data ......................................................... 16 Loading Resource Data................................... 17 Loading Firmware Patch Data......................... 17 The Crystal Key ............................................... 18 Bypassing Plug and Play................................. 19 Hardware Configuration Data .......................... 20 Hostload Procedure ......................................... 24 External E 2PROM............................................ 24 WINDOWS SOUND SYSTEM CODEC .............. 26 Enhanced Functions (MODEs) ........................ 26 FIFOs ............................................................... 27 WSS Codec PIO Register Interface ................ 27 DMA Interface.................................................. 28 Sound System Codec Register Interface ........ 29 Direct Mapped Registers (R0-R3) ............... 29 Indirect Mapped Registers (I0-I31) .............. 35 WSS Extended Registers (X0-X25) ............ 48 SOUND BLASTER INTERFACE........................ 57 Mode Switching ............................................... 57 Sound Blaster Register Interface .................... 57 GAME PORT INTERFACE ................................. 60 CONTROL INTERFACE ..................................... 61 Control Register Interface................................ 61 Control Indirect Registers (C0-C8) .................. 65 SRS 3D Sound Overview ................................ 68 Hearing Basics................................................. 69 The SRS 3D Stereo Process .......................... 69 SRS Space Control ......................................... 69 SRS Center Control......................................... 70 SRS Mono-to-Stereo Synthesis....................... 71 Consumer IEC-958 Digital Output ................... 71 MPU-401 INTERFACE ........................................ 72 MPU-401 Register Interface ............................ 72 MIDI UART ...................................................... 73 MPU-401 "UART" Mode Operation ................. 73 FM SYNTHESIZER (Internal)............................. 73 EXTERNAL PERIPHERAL PORT...................... 74 Synthesizer Interface ....................................... 74 CDROM Interface ............................................ 75 Modem Interface.............................................. 76 DSP SERIAL AUDIO DATA PORT.................... 76 CS9236 WAVETABLE SERIAL DATA PORT ... 78 WSS CODEC SOFTWARE DESCRIPTION .......79 Calibration ........................................................79 Changing Sampling Rate .................................80 Changing Audio Data Formats.........................81 Audio Data Formats .........................................81 DMA Registers .................................................85 Digital Loopback...............................................86 Timer Registers ................................................86 WSS Codec Interrupt .......................................86 Error Conditions ...............................................87 DIGITAL HARDWARE DESCRIPTION...............87 Bus Interface ....................................................87 Volume Control Interface .................................87 Crystal/Clock ....................................................88 General Purpose Output Pins ..........................88 Reset and Power Down ...................................89 Multiplexed Pin Configuration...........................89 ANALOG HARDWARE DESCRIPTION .............90 Line-Level Inputs Plus MPC Mixer...................90 Microphone Level Inputs ..................................91 Mono Input .......................................................91 Line-Level Outputs ...........................................92 Mono Output with Mute Control .......................92 Miscellaneous Analog Signals..........................92 GROUNDING AND LAYOUT ..............................92 POWER SUPPLIES.............................................93 ADC/DAC FILTER RESPONSE..........................95 PIN DESCRIPTIONS ...........................................97 ISA Bus Interface Pins .....................................98 Analog Inputs ...................................................99 Analog Outputs.................................................100 MIDI Interface...................................................101 External FM Synthesizer Interface ...................101 External Peripheral Port ...................................101 Joystick/DSP Serial Port Interface ...................103 CS9236 Wavetable Serial Port Interface .........104 CDROM Interface.............................................105 Volume Control.................................................106 Miscellaneous ...................................................106 Power Supplies ................................................107 PARAMETER DEFINITIONS...............................108 PACKAGE PARAMETERS .................................109 APPENDIX A: E 2PROM TYPICAL DATA ..........110 APPENDIX B: CS4237B DIFFERENCES...........112 CS4237B DS213PP4 Windows and Windows Sound System are registered trademarks of Microsoft Corporation. Sound Blaster and Sound Blaster Pro are registered trademarks of Creative Labs. Adlib is a registered trademark of Adlib Corporation. The word SRS and the SRS Symbol are registered trademarks of SRS Labs, Inc. The CS4237B incorporates the SRS (Sound Retrieval System) under license from SRS Labs, Inc. 2 |
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