FAQ Communication LSI

Questions
How long is the erasable maximum echo time?
When inputting the tone signal, it is canceled. Does the noise canceller also cancel the tone signal?
The transmission clock and reception clock of PCM interface signal occasionally make asynchronous facing connection. Even in this case, isn't there any problem in operation? In SYNC, BCLK, CLKSEL, and SYNCSEL, is it impossible to use asynchronous transmission and reception?
In analog I/O, is 600Ω line transformer direct drive possible?
The audio side and circuit side are each connected with analog signal. In this case, how much value should I set the I/O standard level?
Do you have the evaluation kit?

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