Digi Mic knopfler stands for Digital Microphone Knopfler, Knopfler is a brand name of a popular recording equipments like in microphones, guitars and more. A digi mic knopfler is the latest types of microphone that being used on nokia hardware components, It's a kind of tiny microphone that feeds audio data signal digitally, unlike the most common types which only feeds analog audio signals.
Here's a brief Explanation on How this circuits works for future references.
The picture below is a circuit of Nokia Audio signals from the Audio Codec Circuit( Power IC, Vilma,Avilmas,Retu) feeds to an Application Processor(CPU,Rapidoyawe,Rap3gs,etc.)
The Audio Codec Feeds back the following audio datas and signals:
*AudClk - Audio Clock
*Micdata -Microphone Data
*EarDaL -Earphone Data left channel
*EarDaR -Earphone Data Right channel
*PMARP - Radio Audio Data Positive
*PMARN - Radio Audio Data Negative
Unlike other nokia cellphone handsets like, 5800 XpressMusic, E65, 6220c and more,. used a Digi Mic Knopfler ( like ie..MAB-03A-T-D),.. In between those line paths from the picture above were the digi mic knopfler is being connected. see pics below:Here's a brief Explanation on How this circuits works for future references.
The picture below is a circuit of Nokia Audio signals from the Audio Codec Circuit( Power IC, Vilma,Avilmas,Retu) feeds to an Application Processor(CPU,Rapidoyawe,Rap3gs,etc.)
The Audio Codec Feeds back the following audio datas and signals:
*AudClk - Audio Clock
*Micdata -Microphone Data
*EarDaL -Earphone Data left channel
*EarDaR -Earphone Data Right channel
*PMARP - Radio Audio Data Positive
*PMARN - Radio Audio Data Negative
From the Audio Codec IC the Audio Clock Signal is being connected to the digi mic knopfler to generate another digital audio mic data.
In this process a good and high quality audio data signal is being produce, rather than a typical cellphone's microphone or mouthpiece.
Tutorials on how to test digi mic knopfler MAB-03A-T-D, I will add later.
Even i doesn't aware about this cellphone circuit layout. Its look so cool.
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