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| resources:fpga:xilinx:interposer:admp441 [28 Sep 2012 13:40] – Added common section for describing the evaluation setup and System Demonstration Platform Adrian Costina | resources:fpga:xilinx:interposer:admp441 [03 Jan 2013 20:42] – external edit |
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| ===== Evaluation Boards ===== | ===== Evaluation Boards ===== |
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| * [[adi>en/audiovideo-products/mems-microphones/admp441/products/EVAL-ADMP441Z/eb.html|EVAL-ADMP441Z]] | * [[adi>EVAL-ADMP441Z]] |
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| ====== Overview ====== | ====== Overview ====== |
| ===== Hardware Setup ===== | ===== Hardware Setup ===== |
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| <note important>Before connecting the ADI evaluation board to the Xilinx KC705 make sure that the VADJ_FPGA voltage of the KC705 is set to 3.3V. For more details on how to change the setting for VADJ_FPGA visit the Xilinx KC705 product page.</note> | <WRAP important>Before connecting the ADI evaluation board to the Xilinx KC705 make sure that the VADJ_FPGA voltage of the KC705 is set to 3.3V. For more details on how to change the setting for VADJ_FPGA visit the Xilinx KC705 product page.</WRAP> |
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| * Use the FMC-SDP interposer to connect the ADI evaluation board to the Xilinx KC705 board on the FMC LPC connector. | * Use the FMC-SDP interposer to connect the ADI evaluation board to the Xilinx KC705 board on the FMC LPC connector. |
| At this point everything is set up and it is possible to start the evaluation of the ADI hardware. To capture data from the microphones run the //data_capture.bat// script located in the //DataCapture// folder from the reference design .zip file. Every time the script is run, 20 seconds of audio data is recorded at 25000 Hz sample rate, and saved in **EVAL_ADMP441Z_Demo.wav**. The user can change the sample rate by modifying the value stored in Timer0, and the duration of the recording in seconds, by modifying the nrSeconds variable in **main.c**. The sample rate is calculated according to the period of the WS signal. If the user chooses to modify the duration of the recording, modifications must also be made in the tcl script in order to acquire the desired number of samples (for 20 seconds of audio data, the script acquires data for 10 * 100000 times). | At this point everything is set up and it is possible to start the evaluation of the ADI hardware. To capture data from the microphones run the //data_capture.bat// script located in the //DataCapture// folder from the reference design .zip file. Every time the script is run, 20 seconds of audio data is recorded at 25000 Hz sample rate, and saved in **EVAL_ADMP441Z_Demo.wav**. The user can change the sample rate by modifying the value stored in Timer0, and the duration of the recording in seconds, by modifying the nrSeconds variable in **main.c**. The sample rate is calculated according to the period of the WS signal. If the user chooses to modify the duration of the recording, modifications must also be made in the tcl script in order to acquire the desired number of samples (for 20 seconds of audio data, the script acquires data for 10 * 100000 times). |
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| <note tip>The first time the data capture script is run it is possible that an error will occur while the script is trying to connect to the system. Just run the script again and the error shouldn't appear anymore. The same applies if you do not see any waveforms on the WS or SCLK pins on the evaluation board. </note> | <WRAP tip>The first time the data capture script is run it is possible that an error will occur while the script is trying to connect to the system. Just run the script again and the error shouldn't appear anymore. The same applies if you do not see any waveforms on the WS or SCLK pins on the evaluation board. </WRAP> |
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| ====== More information ====== | ====== More information ====== |
| {{page>ez_common}} | {{page>ez_common}} |
