Core audio driver

Existing audio class driver in MAC x doesn't support the USB 2.0 Audio device.

so,

1.can i get the support for USB 2.0 Audio device from existing audio class driver if i will change the frame transferring rate ?

2.is frame rate the only difference between the USB2.0 and USB 1.1? or any other entity influenced Between the 2.0&1.1.

3. is there any other options for getting USB 2.0 support from existing audio class driver?

4.can i write the sound component for getting Audio frames? is it better option?

5. This is USB 2.0 device. if i will make sound component for USB 1.1 driver, will my device supports that component?

6. Actually my device is having separate(audio and video) interface.

Can i get the audio and video frames parallely? I thing USB connector is having one or two data lines.

is it possible to getting parallel data from usb connector?

Video--->

------------------------------------------------------------------------ frames

Audio----->

----------------------------------------------------------------------frames

or sequentially like

video.........audio..........video..............audio.......frames

7.If any one involving in the core audio development, Suggest me what are the areas i will make changes in existing audio class driver to get the support of

USB 2.0 if it is possible.

Plz suggest me.