The sum of the USB 2.0 packet size should the same as the size of the USB
1.1 packet size for this device. This device is full speed only.
Hopefully it isn't being treated as a high speed device. It doesn't have
bits 11 or 12 set. Plus, I'm currently testing on a 733MHz G4 running
10.3.9, so I'm not expecting any USB 2.0 behavior.
--
Mark Cookson
M-Audio, a part of Avid
225 Locust St.
Hudson, WI 54016
On 7/6/05 12:12 PM, "David Ferguson" <email@hidden> wrote:
> Are you aware of table 9-13 in the USB 2.0 spec. It details how the
> wMaxPacketSize field is encoded for high-speed isoc endpoints Bits
> 10-0 contain the packet size, and bits 12-11 contain an encoding
> detailing how many "additional" packets may be sent per microframe.
>
> I know we debated whether GetMaxPacketSize should return the value of
> the wMaxPacketSize field, or the sum of the number of bytes per frame
> that should be returned. So, we may be helping your confusion.
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