Hi!
I just read the Virtex 4 documentation and the errata sheet for the XC4VFX20CES2 device and I'm thinking about one aspect I found while designing a PCB.
My design will not use any one of the included MGTs. I found in the Xilinx answer database that even unused MGTs need to be powered. Here, the AVCCAUXTRX/RX voltage in the errata sheet is 1.1V while it is -0.5
- 1.32 in the V4 datasheet.
Since I have a supply for VCCINT with 1.2V on my board, I'm wondering if 1.1V are only neccessary to power used MGTs, while 1.2V can be used to power unused MGTs in the CES2 device ??
Thanks, Peter
Btw.: Do I need any filtering?