07-28-2016, 03:38 PM
(07-25-2016, 02:47 PM)tllim Wrote:(07-25-2016, 02:29 PM)xalius Wrote: Are all the boards reported with GbE issues 2GB variants? If so, are there differences in the GbE implementation regarding to the layout?
As our understanding, this issue seems happen on both 1GB and 2GB boards. Due to there are more 2GB boards in the field, it may appear that that related to 2GB board. The GbE PCB routing circuit between 1GB and 2GB board should be identical. There is one theory whether is related to different batch of Realtek RTL8211 Phy chip, this chip was in short supply due to Taiwan earthquake and our manufacturer need to purchase at open market (at higher price) to fulfill the KS delivery. I have go thru this checking with one backer and he has 3 2GB boards able to connect to GbE successfully but one 2GB board cannot, and discovered the all 4 boards Realtek RTL8211 comes from same batch thru inspecting the chip marking.
I have one of the affected boards as well. If there's anything I can do to help.
I tried playing with the rx-delay & tx-delay with no success.
Thanks again.