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pmod:pmod:mic:ref_manual [2015/03/13 00:02] – [Overview] Sam Lowepmod:pmod:mic:ref_manual [2022/09/13 18:00] (current) – changed forum.digilentinc.com to forum.digilent.com Jeffrey
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-[[pmod:pmod:mic|Go Back]]+[[pmod:pmod:mic|Go Back to the PmodMIC Resource Center]] 
 + 
 +====== PmodMIC Reference Manual ====== 
 + 
 +**Note:** The Pmod MIC has been replaced by the [[https://digilent.com/shop/pmod-mic3-mems-microphone-with-adjustable-gain/|Pmod MIC3]].
  
-====== New PmodMIC Reference Manual ====== 
-This page has been adjusted and revised to meet the [[pmod:pmod:pmod_standard#reference_manual|requirements of a reference manual]] in the new Pmod™ Standard. 
 ===== Overview ===== ===== Overview =====
  
-The Digilent PmodMIC (Revision B) is small microphone module with a digital interface. With On Semiconductor's [[http://www.onsemi.com/pub/Collateral/SA575-D.PDF|SA575 Low Voltage Compandor]] and Texas Instrument's [[http://www.ti.com/lit/ds/symlink/adcs7476.pdf|ADCS7476 12-bit Analog-to-Digital Converter]], you can capture your audio inputs with ease.+The Digilent PmodMIC (Revision B) is a small microphone module with a digital interface. With On Semiconductor's [[http://www.onsemi.com/pub/Collateral/SA575-D.PDF|SA575 Low Voltage Compandor]] and Texas Instrument's [[http://www.ti.com/lit/ds/symlink/adcs7476.pdf|ADCS7476 12-bit Analog-to-Digital Converter]], you can capture your audio inputs with ease.
  
 {{ :pmod:pmod:mic:pmodmic.png?300|Digilent's PmodMIC (click to enlarge)}} {{ :pmod:pmod:mic:pmodmic.png?300|Digilent's PmodMIC (click to enlarge)}}
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 =====Functional Description ===== =====Functional Description =====
-The dynamic range compressor on the microphone module helps restrict incoming audio decibels by making the softer sounds louder and the louder sounds softer. The SA575 has its compressor rated for a unity gain level of 0.5 decibels meaning that incoming audio signals will have their decibel level decreased by half, bringing a signal with at -40dB to -20dB.+The PmodMIC is designed to digitally report to the host board whenever it detects any external noise. By sending a 12-bit digital value representative of frequency and volume of the noise, this number can be processed by the system board and have the received sound accurately reproduced through a speaker. 
 +  
 +The dynamic range compressor on the microphone module helps restrict incoming audio decibels by making the softer sounds louder and the louder sounds softer. The SA575 has its compressor rated for a unity gain level of 0.5 decibels meaning that incoming audio signals will have their decibel level decreased by half, bringing a -40dB signal to -20dB.
  
  
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 ---- ----
 ===== Additional Information ===== ===== Additional Information =====
-The schematics of the %%PmodMIC%% are available [[http://digilentinc.com/Data/Products/PMOD-MIC/PmodMIC_sch.pdf|here]]. Additional information about the ADC including communication modes and specific timings of the chip can be found by checking out its datasheet [[http://www.ti.com/lit/ds/symlink/adcs7476.pdf|here]]. Similarly, the datasheet for the compandor can be found [[http://www.onsemi.com/pub/Collateral/SA575-D.PDF|here]]+The schematics of the %%PmodMIC%% are available {{pmod:pmod:pmodmic_sch.pdf|here}}. Additional information about the ADC including communication modes and specific timings of the chip can be found by checking out its datasheet [[http://www.ti.com/lit/ds/symlink/adcs7476.pdf|here]]. Similarly, the datasheet for the compandor can be found [[http://www.onsemi.com/pub/Collateral/SA575-D.PDF|here]]
  
 More specific information about how to use the %%PmodMIC%% can be found by checking out our [[pmod:pmod:mic:user_guide|user guide]]. Example code demonstrating how to get information from the %%PmodMIC%% can be found [[pmod:pmod:mic:example_code|here]].  More specific information about how to use the %%PmodMIC%% can be found by checking out our [[pmod:pmod:mic:user_guide|user guide]]. Example code demonstrating how to get information from the %%PmodMIC%% can be found [[pmod:pmod:mic:example_code|here]]. 
  
-If you have any questions or comments about the %%PmodMIC%%, feel free to post them under the appropriate section ("Add-on Boards") of the [[https://forum.digilentinc.com/|Digilent Forum]].+If you have any questions or comments about the %%PmodMIC%%, feel free to post them under the appropriate section ("Add-on Boards") of the [[https://forum.digilent.com/|Digilent Forum]].
  
  
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 ---- ----
  
-====== Old PmodMIC Reference Manual====== 
- 
-There was no original reference manual for the PmodMIC