描述

General description:

What are the Power/Ground pair numbers for different Virtex packages? What are the simultaneous switching outputs guidelines?

解决方案

The SSO guidelines with the effective Power/Ground pair per package are available in (Xilinx XAPP133): "Using the Virtex SelectI/O Resource."

Currently CB228 and CG560 packages are not listed. Please use the following guidelines for these packages:

- For CB228 package, use the same guidelines as the PQ240 package data for the available Power/Ground pairs and SSO per Power/Ground pair.

- For CG560 package, use the same guidelines as the BG560 package data for the available Power/Ground pairs and SSO per Power/Ground pair.