I2S source switching?

[mbcouple]

If i want to use an existing dsp board, (with accepts an I2S input) but add multiple I2S inputs paths, what is the best way to select between them? Here is the basic flow:

(Input 1) 3 toslink, 3 coax -> cs8416(mux in software mode) -> ad1896 -> I2S on dsp board

(Input 2) 3 analaog -> relay selector -> buffer -> pcm1804 or ak5394 -> I2S on dsp board

If I want to feed the same I2S header on the board, what is the best way of doing so. I am coding a controler for input selection via rotary, so software control is definately an option.

Thanks,
Hans

[dddac]

Originally posted by mbcouple
If i want to use an existing dsp board, (with accepts an I2S input) but add multiple I2S inputs paths, what is the best way to select between them? Here is the basic flow:

(Input 1) 3 toslink, 3 coax -> cs8416(mux in software mode) -> ad1896 -> I2S on dsp board

(Input 2) 3 analaog -> relay selector -> buffer -> pcm1804 or ak5394 -> I2S on dsp board

If I want to feed the same I2S header on the board, what is the best way of doing so. I am coding a controler for input selection via rotary, so software control is definately an option.

Thanks,
Hans

I would us simple relais to switch them.... if there is electrical connections in a circuit, nothing could be against a relay I guess?

I do it as well and it works perfect

[seoman]

You could use the 74xx257 or 74xx157 for switching the 2 i2s signals.

they are "QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS"


regards