cs4239 Cirrus Logic, Inc., cs4239 Datasheet - Page 2

• Manufacturer Part Number: cs4239
• Description: Crystalclear? Ortable Isa Audio System Logic
• Manufacturer: Cirrus Logic, Inc.

CS4239 PERFORMANCE SPECIFICATIONS ... 3
GENERAL DESCRIPTION ................................. 13
PLUG AND PLAY ............................................... 16
WINDOWS SOUND SYSTEM CODEC .............. 27
SOUND BLASTER INTERFACE........................ 54
GAME PORT INTERFACE ................................. 56
CONTROL INTERFACE ..................................... 58
MPU-401 INTERFACE ........................................ 63
FM SYNTHESIZER ............................................. 64
CDROM INTERFACE ......................................... 65
CS4610 DSP SERIAL DATA PORT .................. 65
CS9236 WAVETABLE SERIAL DATA PORT ... 67
ZVPORT SERIAL DATA PORT ......................... 68
Windows and Windows Sound System are registered trademarks of Microsoft Corporation.
Sound Blaster and Sound Blaster Pro are trademarks of Creative Labs.
Adlib is a registered trademark of Adlib Corporation.
2
ISA Bus Interface............................................. 14
PnP Data ......................................................... 17
Loading Resource Data................................... 17
Loading Firmware Patch Data......................... 19
The Crystal Key ............................................... 19
Bypassing Plug and Play................................. 20
Crystal Key 2 ................................................... 21
Hardware Configuration Data .......................... 21
Hostload Procedure ......................................... 25
External E
Enhanced Functions (MODEs)........................ 28
FIFOs ............................................................... 28
WSS Codec PIO Register Interface ................ 28
DMA Interface.................................................. 29
Sound System Codec Register Interface ........ 30
Mode Switching ............................................... 54
Sound Blaster Direct Register Interface.......... 54
Sound Blaster Mixer Registers ........................ 55
Control Register Interface................................ 58
Control Indirect Registers (C0-C9) .................. 60
MPU-401 Register Interface ............................ 63
MIDI UART ...................................................... 64
MPU-401 "UART" Mode Operation ................. 64
Direct Mapped Registers (R0-R3) ............... 31
Indirect Mapped Registers (I0-I31) .............. 33
WSS Extended Registers (X0-X31) ............ 45
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PROM............................................ 26
TABLE OF CONTENTS
WSS CODEC SOFTWARE DESCRIPTION .......68
DIGITAL HARDWARE DESCRIPTION...............73
ANALOG HARDWARE DESCRIPTION .............76
GROUNDING AND LAYOUT ..............................77
POWER SUPPLIES.............................................78
ADC/DAC FILTER RESPONSE..........................80
PIN DESCRIPTIONS ...........................................82
PARAMETER DEFINITIONS...............................92
PACKAGE PARAMETERS .................................93
APPENDIX A: DEFAULT PnP DATA.................94
APPENDIX B: CS4239 DIFFERENCES .............96
Calibration ........................................................69
Changing Sampling Rate .................................70
Changing Audio Data Formats.........................70
Audio Data Formats .........................................70
DMA Registers .................................................71
WSS Codec Interrupt .......................................73
Error Conditions ...............................................73
Bus Interface ....................................................74
Volume Control Interface .................................74
Crystal/Clock ....................................................74
General Purpose Output Pins ..........................75
Reset and Power Down ...................................75
Address Port Configuration ..............................75
Multiplexed Pin Configuration...........................75
Line-Level Inputs Plus MPC Mixer...................76
Microphone Level Input....................................77
Mono Input .......................................................77
Line-Level Outputs ...........................................77
Miscellaneous Analog Signals..........................77
ISA Bus Interface Pins .....................................83
Analog Inputs ...................................................84
Analog Outputs.................................................85
MIDI Interface...................................................86
External Peripheral Signals ..............................86
CS4610 DSP Serial Port Interface...................87
CS9236 Wavetable Serial Port Interface .........88
ZVPORT Serial Port Interface..........................88
CDROM Interface.............................................89
Volume Control.................................................90
Miscellaneous ...................................................90
Power Supplies ................................................91
CrystalClear Portable ISA Audio System
TM
DS253PP2
CS4239