lpcware

LPC1820 and I2S interfaces

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by vdelabouere on Tue Sep 23 14:24:18 MST 2014
Hi all,

I have a LPC1820 based design that is using both I2S0 and I2S1 interfaces for audio codec connections. So I have 2 stereo out and 2 stereo in.
Currently one CODEC is connected to I2S0 clock signals and the other one is connected to I2S1 clock signals.

I declared I2S0 and I2S1 as master (they provide the clocks to the codecs).

How can I make sure that I2S0 and I2S1 clocks are fully in synch ?
Do I need to declare I2S1 as a slave interface and feed some I2S0 clocks into the I2S1 ones ?
Or is there any internal LPC settings that will guarantee this synchronization ?

Thanks.

Vincent

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