Rockbox mail archiveSubject: RE: DMA Operation???
From: Nielsen Linus (ext) (Linus.Nielsen_at_elema.siemens.se)
> I am looking at mpeg.c and can see that the MP3 data is DMAed
That is the register where we write the address from where the DMA reads the
> question1: is this buffer on the MAS chip circular? by this I
The data to the MAS is sent via a serial channel. But yes, the large 1.7Mb
> question2: How often does that interupt get fired? is it
That is correct.
> (what I was thinking was to point the DMA controller to an
Looks feasible. Two small problems:
1. The usage of the bit reservoir will probably introduce unwanted noise
2. You still have to insert the frame at a frame boundary, or you will get
> has neone documented the disc-buffer-mas transfer situation?
No I haven't. I have begun writing a document describing this, but something
Page was last modified "Jan 10 2012" The Rockbox Crew