文件列表:

Audio codec talkthrough (0, 2004-07-04)
Audio codec talkthrough\ASM (0, 2004-07-04)
Audio codec talkthrough\ASM\I2S (0, 2004-07-04)
Audio codec talkthrough\ASM\I2S\main.asm (3832, 2004-05-21)
Audio codec talkthrough\ASM\I2S\ADSP-BF533_ASM.ldf (1529, 2004-05-21)
Audio codec talkthrough\ASM\I2S\ASM_Talkthrough_I2S.dpj (6546, 2004-05-21)
Audio codec talkthrough\ASM\I2S\initialization.asm (8226, 2004-05-21)
Audio codec talkthrough\ASM\I2S\interrupts.asm (2143, 2004-05-21)
Audio codec talkthrough\ASM\I2S\Process_Data.asm (1340, 2004-05-21)
Audio codec talkthrough\ASM\I2S\startup.asm (6697, 2004-05-21)
Audio codec talkthrough\ASM\I2S\startup.h (905, 2004-05-21)
Audio codec talkthrough\ASM\I2S\Talkthrough.h (2539, 2004-05-21)
Audio codec talkthrough\ASM\TDM (0, 2004-07-04)
Audio codec talkthrough\ASM\TDM\ADSP-BF533_ASM.ldf (1529, 2004-05-21)
Audio codec talkthrough\ASM\TDM\ASM_Talkthrough_TDM.dpj (6546, 2004-05-21)
Audio codec talkthrough\ASM\TDM\initialization.asm (8204, 2004-05-21)
Audio codec talkthrough\ASM\TDM\interrupts.asm (2182, 2004-05-21)
Audio codec talkthrough\ASM\TDM\main.asm (3356, 2004-05-21)
Audio codec talkthrough\ASM\TDM\Process_Data.asm (1341, 2004-05-21)
Audio codec talkthrough\ASM\TDM\startup.asm (6675, 2004-05-21)
Audio codec talkthrough\ASM\TDM\startup.h (905, 2004-05-21)
Audio codec talkthrough\ASM\TDM\Talkthrough.h (2580, 2004-05-21)
Audio codec talkthrough\C (0, 2004-07-04)
Audio codec talkthrough\C\I2S (0, 2004-07-04)
Audio codec talkthrough\C\I2S\C_Talkthrough_I2S.dpj (5255, 2004-05-21)
Audio codec talkthrough\C\I2S\C_Talkthrough_I2S.dxe (42228, 2004-05-21)
Audio codec talkthrough\C\I2S\Initialize.c (5815, 2004-05-21)
Audio codec talkthrough\C\I2S\ISR.c (1524, 2004-05-21)
Audio codec talkthrough\C\I2S\main.c (3812, 2004-05-21)
Audio codec talkthrough\C\I2S\Process_data.c (959, 2004-05-21)
Audio codec talkthrough\C\I2S\Talkthrough.h (2798, 2004-05-21)
Audio codec talkthrough\C\TDM (0, 2004-07-04)
Audio codec talkthrough\C\TDM\C_Talkthrough_TDM.dpj (5255, 2004-05-21)
Audio codec talkthrough\C\TDM\C_Talkthrough_TDM.dxe (43036, 2004-05-21)
Audio codec talkthrough\C\TDM\Initialize.c (5907, 2004-05-21)
Audio codec talkthrough\C\TDM\ISR.c (1624, 2004-05-21)
Audio codec talkthrough\C\TDM\main.c (3693, 2004-05-21)
... ...

********************************************************************************************* ADSP-BF533 EZ-KIT Lite C Based AD1836 TALKTHRU Analog Devices, Inc. DSP Division Three Technology Way P.O. Box 9106 Norwood, MA 02062 Date Created: 04/03/03 ____________________________________________________________________________________________ This directory contains an example ADSP-BF533 subroutine that demonstrates the initialization of the link between SPORT0 on the ADSP-BF533 and the AD1836 stereo Codec. This is done by initializing the link in I2S mode and implementing a simple talk-through routine. Files contained in this directory: readme.txt this file main.c C file containing the main program and variable declaration Initialize.c C file containing all initialisation routines ISR.c C file containing the interrupt service routine for SPORT0_RX Process_data.c C file for processing incoming data Talkthrough.h C header file containing prototypes and macros C_Talkthrough_I2S.dpj VisualDSP++ project file ____________________________________________________________________________________________ CONTENTS I. FUNCTIONAL DESCRIPTION II. IMPLEMENTATION DESCRIPTION III. OPERATION DESCRIPTION I. FUNCTIONAL DESCRIPTION The Talkthru demo demonstrates the initialization of SPORT0 to establish a link between the ADSP-BF533 and the AD1836 Codec. The program simply sets up the SPI port to configure the AD1836 codec in I2S mode. SPORT0 is then setup to receive/transmit audio samples from the AD1836. Audio samples received from the AD1836 are moved into the DSP's receive buffer, using DMA. The samples are processed by the ADSP-BF533 and place in the transmit buffer. In turn, the transmit buffer is used to transmit data to the AD1836. This results in a simple talk-through where data is moved in and out of the DSP without performing any computations on the data. II. IMPLEMENTATION DESCRIPTION The Initialization module initializes: 1. EBIU setup 2. Flash setup 3. SPI setup to initialize AD1836 codec 4. SPORT0 setup 5. DMA setup 6. Interrupt configuration III. OPERATION DESCRIPTION - Open the project "C_Talkthrough_I2S.dpj" in an ADSP-BF533 EZ-KIT Lite session in the VisualDSP Integrated Development Environment (IDDE). - Under the "Project" tab, select "Build Project" (program is then loaded automatically into DSP). - Turn pin 5 and 6 of SW9 on the AD-BF533 EZ-KIT Lite ON, these will connect RSCLK0 -> TSCLK0 and RFS0 -> TFS0. - Setup an input source (such as a radio) to the audio in jack and an output source (such as headphones) to the audio out jack of the EZ-KIT Lite. See the ADSP-BF533 EZ-KIT Lite User's Manual for more information on setting up the hardware. - Select "Run" from the "Debug" tab on the menu bar of VisualDSP. - Listen to the operation of the talk-through.

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