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Hello everyone, I’m a newbie on working on zedboard, and I want to use my Zedboard to communicate with Pmod MIC3 this time. I did a few researches about how to use the Pmod MIC3, and I think I found something useful in another post, link: https://forum.digilentinc.com/topic/19342-driver-code-for-pmod-acl2-and-pmod-mic3/ I’m really appreciate and thanks for their help, but unfortunately I still have no idea of how to make my Pmod MIC3 to run with my Zedboard. I know Pmod MIC3 is using SPI communication protocol and I read what SPI is, link: https://reference.digilentinc.com/learn/fundamentals/communication-protocols/spi/start But I’m not sure is that Quad SPI is the same as SPI in Zedboard. About the Pmod MIC3, I know that it used a MEMS Mic and an ADC, but I also don’t know how to implement it, like do I need a code or IP cores to handle these 2 components? Here is a simply conclusion of my questions: 1. How to use SPI in Zedboard? (Any pin configuration is required?) 2. Do I need a code or something else to handle the ADC and MEMS Mic in Pmod MIC3? 3. Is it possible to make this project work in .vhdl? Or I need something else? 4. How to getting start with? 5. Importance of IP core I know IP cores is an important thing, but I don’t get a clear idea about it and how it works with Vivado. Any help and reference suggestions is appreciated! Thanks 😊 !!

Hello, I'm trying to make a voice-activated on a nesys4 and i want to use the pmodMic3.To do si, I want to use the SPI protocol but i don't know how. So how can i choose the SPI protocol ? Furthermore, I got some issues when filling in the constraint's file. On the web-site of Diligent, the pin2 is not connected but, the protocol SPI show the opposite. So how to Well connect the in/out of the peripheral to the board in the constraint's file? Thank you in advance for your answer. Junior

We are trying to investigate whether the PmodMIC3 would be a suitable microphone to use for a project, but we cannot find details on how the 12-bits of digital data sent should be interepreted. There is a link on your website to a "user guide" but that link is broken. Go to https://reference.digilentinc.com/pmod/pmod/mic3/ref_manual and click "user guide", it will bring you to https://reference.digilentinc.com/pmod/pmod/mic3/user_guide where it says "This topic does not exist yet". Is it possible to repair this link so we can obtain this user guide? Thank you very much.

I got a bit bored yesterday, and hooked the PMODmic3 up to my PMODamp3 design, and put a small delay (of 32768 samples). The VHDL module for the microphone interface is actually surprisingly small : ---------------------------------------------------------------------------------- -- Engineer: Mike Field <[email protected]> -- -- Module Name: pmod_mic3 - Behavioral -- -- Description: Sample input form a PMOD_MIC3, once every 256 ticks of the -- master clock (mclk). ---------------------------------------------------------------------------------- library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.NUMERIC_STD.ALL; entity pmod_mic3 is Port ( mclk : in STD_LOGIC; sclk : out STD_LOGIC; cs : out STD_LOGIC; sdat : in STD_LOGIC; de : out STD_LOGIC; sample : out STD_LOGIC_VECTOR (15 downto 0) := (others => '0')); end pmod_mic3; architecture Behavioral of pmod_mic3 is signal counter : unsigned(7 downto 0) := (others => '0'); signal data_sr : std_logic_vector(11 downto 0) := (others => '0'); begin process(mclk) begin if rising_edge(mclk) then de <= '0'; if counter > 5 and counter < 6 + 16*8 then cs <= '0'; else cs <= '1'; end if; if counter(2 downto 0) = 0 then data_sr <= data_sr(10 downto 0) & sdat; end if; if counter = 17 * 8 then --------------------------------------------- -- convert the 12-bit unsigned sample to the -- lowest 12 bits of a 16-bit signed sample -- by adding it to -2048 --------------------------------------------- de <= '1'; sample <= std_logic_vector(to_unsigned(63488,16) + unsigned(data_sr)); end if; sclk <= std_logic(counter(2)); counter <= counter + 1; end if; end process; end Behavioral; If interested, the rest of the code is at http://hamsterworks.co.nz/mediawiki/index.php/MIC_and_AMP

I've finally got my PmodMIC3 out of it's back and have it up and running. http://hamsterworks.co.nz/mediawiki/index.php/Digital_Microphone It's pretty interesting how the MEMS microphones work - it seems to be much like this, but at audio frequencies: