When the PicoZed 7015/30 PCB was designed, it made more sense to rotate the Zynq device 180 degrees in comparison to the 7010/20 PCB. This allowed for easier transceiver routing from the 7015/30 Zynq device to JX3. With the rotation, it also made more sense to put the Bank 35 I/Os on JX1 and the Bank 34 I/Os on JX2.
Although the Bank 34 and 35 I/Os were exchanged on JX1/JX2, the VCCO pins were not. This leads to a limitation if you plan to design a carrier that supports multiple members of the PicoZed family:
- If the Carrier has different voltages on VCCO_34 and VCCO_35, then
- the Carrier cannot migrate between the 7010/20 and 7015/30. Only one family pair can be supported.
Avnet's PicoZed FMC Carrier shares the same voltage on VCCO_34 and VCCO_35, therefore, it can support any of the SOMs.
If you only plan to migrate between the 7010 and 7020 or the 7015 and 7030, then you will also not have this limitation.
Bryan
