PCM2707

Hi

   I am doing a project wher i need to convert usb data from PC to I2s, here am using PCM2707. I have some doubt please do help me to come out of these,..

1. Is there any Self checking procedure to check the IC outside the circuit.

2. how much frequency input has to be fed into IC through USB, and at what freq we will get I2s data as output.

3. why is SSPEND pin used

4. As i tried with both XP and Vista at the input end,.. XP detects this ckt as 'USB audio DAC' and Vista detects as 'USB speaker '

    is there any difference in drivers in these OS.

5. Can u please get me a circuit design which can help me to convert USB data to I2s, which must be BUS powered, because i am not sure about what i am having now.

6. How to check the I2s data at the output, if you have any idea please do share with me.

waiting for the earliest reply,....