RE: [usb] special token processing

["Apoorva Mathur" <amathur@cadence.com>]

You are right Leo, these PIDs are only meant for a Hub.

See the following references for more information:
1. Table 8-1, pp 196, Universal Serial Bus Specification Revision 2.0.
2. Section 8.4.5, pp 207, Universal Serial Bus Specification Revision
2.0.
3. Section 11.18.5, pp 378, Universal Serial Bus Specification Revision
2.0.
4. figure 8.48, pp 235, Universal Serial Bus Specification Revision 2.0.
5. Section 8.4.227, pp 207, Universal Serial Bus Specification Revision
2.0. 

Apoorva

-----Original Message-----
From: Leo Jarillas [mailto:leo.jarillas@eazix.com] 
Sent: Friday, July 04, 2003 7:04 AM
To: usb@opencores.org
Subject: [usb] special token processing


Hi,
  I have a question on special token processing.  

	--Are the special tokens PRE, ERR and SPLIT only issued on USB
hubs and not devices?  

  I'm asking this question because the USB2.0 Function Core does not
support these tokens and I was wondering if the reason is that it is
meant to be used on a device and not a hub.

Thanks.
Leo 

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