If you are designing a PicoZed Carrier that supports either the PicoZed 7015 or 7030, you must design for the transceivers. What if you aren't using the transceivers in your design? How should the Rx, Tx, Clocks, and power pins be handled?
The best references for this are:
- Xilinx UG476 (Table 5-7: GTX/GTH Transceiver PCB Design Checklist, in 14 Aug 2018 version) for the PicoZed 7030
- Xilinx UG482 (Table 5-4: Unused GTP Quad Column Connections, in 19 Dec 2016 version) for the PicoZed 7015
- https://forums.xilinx.com/t5/7-Series-FPGAs/Kintex-7Gtx-transceiver-connections/m-p/694453/highlight/true#M16395
I will summarize in the table below.
Pins | Recommendations | Where Handled |
MGTREFCLK* | Float | Carrier -- up to the user |
MGTXRX*, MGTHRX* | GND | Carrier -- up to the user |
MGTXTX*, MGTHTX* | Float | Carrier -- up to the user |
MGTAVCC | GND | Carrier -- up to the user |
MGTAVTT | GND | Carrier -- up to the user |
MGTVCCAUX | VCCAUX | SOM -- connected to filtered 1.8V |
Bryan