Re: Using DMA with DCI for I2S driver question
Seems the source files in CE117 are not completely consistent.
(At least not what was contained in the ...SEP11.zip: I found one reference to RA6, another to port A, Bit 0 - which is certainly not the same pin.)
This pin toggling is to indicate whether the data is for the left or for the right stereo channel.
(This is the most simple multiplexing scheme of I2S. the other utilizes a pulse on this line to indicate the start of a frame of n channels.)
It doesn't matter which pin you utilize, but you cannot go without that.
PEBKAC / EBKAC / POBCAK / PICNIC (eventually see en.wikipedia.org)