CS4231A Datasheet, PDF (2/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

CS4231A
TABLE OF CONTENTS:
CS4231A TECHNICAL SPECIFICATIONS..............3
GENERAL DESCRIPTION .......................................11
Enhanced Functions (MODE 2)..............................12
Mixer Attenuation Control on Line Input ..............12
ANALOG HARDWARE DESCRIPTION...................12
Analog Inputs ..........................................................12
Line-Level Inputs plus MPC Mixer .......................13
Microphone Level Inputs ......................................13
Mono Input with Attenuation and Mute ................13
Analog Outputs .......................................................13
Mono Output with Mute Control ...........................14
Miscellaneous Analog Signals ................................14
DIGITAL HARDWARE DESCRIPTION ....................14
Parallel Data Interface ............................................14
FIFOs ......................................................................14
High Current Data Bus Drivers ...............................15
PIO Registers Interface...........................................15
DMA Interface .........................................................15
Dual DMA Channel Mode ....................................16
Single DMA Channel (SDC) Mode.......................16
Serial Audio Data Port ............................................16
Miscellaneous Signals.............................................18
Crystals/Clocks .....................................................18
Power Down - PDWN ..........................................19
DBEN/DBDIR .......................................................19
SOFTWARE DESCRIPTION ....................................19
Power-Down and Initialization.................................19
Calibration Modes ...................................................20
Changing Sampling Rate ........................................21
Changing Audio Data Formats ...............................21
Audio Data Formats ................................................21
16-bit Signed ........................................................22
8-bit Unsigned ......................................................22
8-bit Companded ..................................................22
ADPCM Compression/Decompression ................25
DMA Registers ........................................................25
Playback DMA Registers......................................26
Capture DMA Registers .......................................26
Digital Loopback......................................................26
Timer Registers.......................................................27
Interrupts .................................................................27
Error Conditions ......................................................27
CS4231A REGISTER MAPPING .............................28
Physical Mapping....................................................28
Index Address Register................ (R0)................29
Index Data Register ..................... (R1)................29
Status Register............................. (R2, RO) ........29
Capture I/O Data Register ........... (R3, RO) ........30
Playback I/O Data Register ......... (R3, WO) .......31
Left ADC Input Control................. (I0) .................31
Right ADC Input Control .............. (I1) .................31
Left Auxiliary #1 Input Control...... (I2) .................31
Right Auxiliary #1 Input Control ... (I3) .................32
Left Auxiliary #2 Input Control...... (I4) .................32
Right Auxiliary #2 Input Control ... (I5) .................32
Left DAC Output Control.............. (I6) .................32
Right DAC Output Control ........... (I7) .................32
Fs and Playback Data Format ..... (I8) .................33
Interface Configuration ................. (I9) .................34
Pin Control ................................... (I10) ...............35
Error Status and Initialization ....... (I11, RO)........35
MODE and ID............................... (I12) ...............36
Loopback Control ......................... (I13) ...............36
Playback Upper Base .................. (I14) ...............36
Playback Lower Base .................. (I15) ...............36
Alternate Feature Enable I ........... (I16) ...............37
Alternate Feature Enable II.......... (I17) ...............37
Left Line Input Control.................. (I18) ...............37
Right Line Input Control ............... (I19) ...............40
Timer Lower Base ........................ (I20) ...............40
Timer Upper Base ........................ (I21) ...............40
Alternate Feature Enable III ......... (I23) ...............40
Alternate Feature Status .............. (I24) ...............41
Version/ Chip ID........................... (I25) ...............41
Mono Input & Output Control....... (I26) ...............41
Capture Data Format ................... (I28) ...............42
Capture Upper Base .................... (I30) ...............42
Capture Lower Base .................... (I31) ...............42
GROUNDING AND LAYOUT ...................................43
COMPATIBILITY WITH AD1848..............................43
ADC/DAC FILTER RESPONSE PLOTS..................45
PIN DESCRIPTIONS ................................................47
PARAMETER DEFINITIONS....................................54
APPENDIX A ............................................................55
PACKAGE DIMENSION ...........................................56
CDB4231/4248 Data Sheet......................................57
2
DS139PP2