Hi all,
I tried iMX51 USB2.0 compliance test but failed because of the bit rate was not 480Mbps but 433Mbps.
Anybody knows the reason why bit rate is so low? How can I adjust it to 480Mbps?
Torus1000
This discussion is closed since no activity. If you still need help, please feel free to reply with an update to this discussion, or create another discussion.
Thanks,
Yixing
Torus1000
We have not got your response yet and will close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.
Thanks,
Yixing
Torus1000
We are sorry for getting back to you so late. Are you still stuck with the issue? If you have somehow to resolved the
issue, can we close the discussion? If you still need help, please feel free to reply with an update to this discussion.
Thanks,
Yixing
It seems there is something wrong with test conditions.
Please check "usb_phy_clk_root" settings. Please look at
Figure 7-44 "Serial Clock Generation (3 of 7)" of i.MX 51
Refernce Manual.
Also I am sending you USB High Speed EHOST Electrical
Validation Report for i.MX51 processor.
http://photo.afti.ru/tmp/fs/USB_Electrical_Validation_report_USBD0964.pdf
Please pay attention on chapter 3.1 "Test Procedures".