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How to maintain the port of a specific module in ICCII? for this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

In the back-end design, in order to make the final result more optimized, that is, better area, power consumption and performance, the tool may change the port of module during optimization. But this may cause some problems. One of the problems is that when the front end is doing simulation, it is difficult to find the signal that needs to be monitored because some module port can not be found.

In this case, of course, the preferred recommendation is to monitor the pin of a specific physical cell as much as possible, and then set the dont touch on those cell instead of directly detecting the hierarchical port.

Another solution is to keep these port. If we use ICC, we usually set dont touch for the port of these moudle. Then the tool will take into account the dont touch attribute when optimizing, so that these port will not be optimized.

However, in icc2, setting the dont touch property in hierarchy port is not valid.

I encountered this situation in a project when I first started using ICC2. At that time, based on the experience of using ICC, dont touch was set for all port of moudle. But in the end, it turns out that a lot of port is missing.

In fact, there is a special command in ICCII to solve this problem, that is to use set_freeze_port, please remember this command. And the specific usage of this command, we will not repeat here, you can directly use online help.

This is the answer to the question about how to maintain the port of a specific module in ICCII. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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