In SX Microcontrollers, SX/B Compiler and SX-Key Tool, punmaster wrote:

I have used synchronous serial interfaces a hundred times before, and that part was never the issue. As I said, "The SCLK and SDATA lines seem pretty simple. They look like a very simple synchronous serial interface." Unfortunately, I am still totally in the dark about the other signals. I vaguely know what they are supposed to do (LRCLK selects the channel and MCLK clocks the decoder), but that's all I understand. The datasheet says something about everything needing to be synchronized and that some special ratio between the signals must exist. That right there shot down my initial idea, which was to tie LRCLK low, pulse MCLK with an external oscillator, send data over SCLK/SDATA, and hope to hear something from the left channel. I think all of this complicated signaling is needed to maintain a constant sampling rate and keep the channels aligned. Has anyone here ever dealt with an I2S DAC before? Thanks again. Sorry if my first post wasn't very clear. :)

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=274566#m275794

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)