PlanAhead does not allow me to constrain my differential I/Os to all valid differential locations.
Why is PlanAhead preventing me from constraining my differential I/O?
This is a known issue with PlanAhead for Spartan-3 devices with VQ100 and TQ144 packages.
To work around this issue, use the Automotive Spartan-3 devices with the same package; Analysis with Spartan-3 and Automotive Spartan-3 is the equivalent.
| AR# 32368 | |
|---|---|
| 日期 | 05/23/2014 |
| 状态 | Archive |
| Type | 综合文章 |