|
Message
From: Rudolf Usselmann<rudi@a...>
Date: Tue Oct 19 11:43:06 CEST 2004
Subject: [usb] bulkusb.sys with usb1_funct and usb_phy
Howdy All,
I've heard about these rumors that there was a problem with
USB PHY before, but nobody ever debugged it or pinpointed
the problem ...
Finally I had some time, and looked in to the problem. Turns
out there where two problems: 1) DPLL in the rx_phy didn't
properly align, and could drift such that you would eventually
skip bits; 2) the tx_phy would drop the very last bit in a
packet if that bit was a stuff bit.
Fixes have been checked in, please give it a try ...
Regards,
rudi
=============================================================
Rudolf Usselmann, ASICS World Services, http://www.asics.ws
Your Partner for IP Cores, Design, Verification and Synthesis
|
 |
Browse
