three I2S ports?

Hi,

I want to use the beagleboard as the basis for a digital audio pre
amplifier. Therefore I need three stereo I2S outputs. It seems that
port 1 and 3 are multiplexed on the same pins, so I was wondering
whether it is possible to have 3 ports available. I can probably
remove port 2 from the TWL4030, but can I access port 4 or 0?
Thanks in advance.

Kind regards,

Remco Poelstra

The only accessible ports on Beagle are on the expansion header and McSP1 and 3 can be accessed there. There is no way to access the I2S used on the TWL4030. The other ports are not accessible. So, the maximum is 2 I2S ports from Beagle.

Gerald

Hi,

Thanks for your reply.
Well, that actually leaves one then, since port 3 and 1 are
multiplexed on the same pins.

I'll see how I can resolve this, maybe designing an I2S multiplexer.

Regards,

Remco Poelstra

Good luck! Let me know what you come up with.

Gerald