Cmedia 6571 codecs are intel 8051 based codecs and have firmware on them to
handle the usb protocol, i have another usb codecs which are plantronics,
they have no problem when i use them 8khz and 8 bit, but when i use them as
16 bit and 48khz, the bandwidth problem occurs again.
On 4 Aug 2014 22:33, "Vladimir Mosgalin" <mosga...@vm10124.spb.edu> wrote:
> Hi Ralf Mardorf!
>
> On 2014.08.04 at 19:05:37 +0200, Ralf Mardorf wrote next:
>
> > On Mon, 2014-08-04 at 19:53 +0300, Burak METİN wrote:
> > > When i use these cards with different usb buses, it is ok but i need
> > > to use them in same bus.
> >
> > IIRC the plug'n'play audio USB driver is limited to USB1, for USB2
> > proprietary drivers are needed. But perhaps I'm confusing something.
> > Assumed I shouldn't be mistaken, then perhaps the bandwidth really is to
> > small.
>
> Can't be true.. Here is example of USB 2.0 audio device (bcdUSB: 2.00),
> completely plug and play:
>
> Bus 002 Device 005: ID 20b1:0002 XMOS Ltd
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 239 Miscellaneous Device
> bDeviceSubClass 2 ?
> bDeviceProtocol 1 Interface Association
> bMaxPacketSize0 64
> idVendor 0x20b1 XMOS Ltd
> idProduct 0x0002
> bcdDevice 3.30
> iManufacturer 1 XMOS
> iProduct 2 XMOS USB Audio 2.0
> iSerial 3 0000
> bNumConfigurations 2
>
>
> --
>
> Vladimir
>
>
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