For Zynq-7000 SoC, can a common supply rail be used for VCCINT and VCCPINT?
For Zynq-7000 SoC, can a common supply rail be used for VCCAUX and VCCPAUX?
The Zynq-7000 family was designed to allow the Processor System (PS) and Programmable Logic (PL) sides of the device to be powered independently. This is outlined in the device data sheets (DS187 and DS191) in the section "PS-PL Power Sequencing". This provides the flexibility of only powering on one side or the other, as needed by the design. However, it is possible to share the VCCINT and VCCPINT power rails, and/or the VCCAUX/VCCPAUX power rails on the PCB design, but doing so will mean that the independent powering flexibility will be lost. To do this, the following requirements will still need to be met:
The Zynq-7000 PCB Design and Pin Planning Guide v1.6 was updated to reflect this option.