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i2s full duplex DMA clarification

Question asked by montagnani.giovanni_ on May 30, 2015
Latest reply on Jun 1, 2015 by montagnani.giovanni_
hi everyone.
for my application i need to use two microphones with PDM output (left and right).
now i'm currently using one microphone, connected to a i2s in half duplex mode with DMA transfer (like the example inSTM32cube does) however, now i have to use also the second mycrophone, reading the datasheet i understood that i should connect it with sda_ext pin operating i2s in full duplex mode. now my memory written by DMA transfer will be filled in half the time right?
data order in the buffer will be 16 bits left channel-16 bit right channel (philips standard) and so on, right? 

thank you

Giovanni

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