Isolated routing must be separated by an adequate fence and trusted routing must satisfy the following:
- Inter-region routes have loads in exactly one isolation group.
- No routing switches (PIPs) are used in the fence.
- Inter-region routes cannot share a tile unless source regions match and load regions match.
- An intra-region route cannot enter a fence tile or an isolated tile of another
isolation group unless it is driven by a cell marked with the
HD.ISOLATED_EXEMPTproperty.
Note: It might be useful to enable Routing Resources mode under
View > Routing Resources in the menu or using the routing icon in the Device
window.
Note: Because IDF_VIV2-6 checks the implemented routing, the
results of running IDF_VIV2-6 are only useful if the design has been routed. Prior
to implementation, there is nothing for IDF_VIV2-6 to check, and therefore no
possibility a violation will be found.