Input port and input output port declaration in top module

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sandy2811

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Inout port and input output port declaration in top module

Hi all,
If i have three modules, one is top and other two is instaintiated in that top module. In top i have declare an inout port a and in other two modules i declared the same port as input a and output a. So is it correct way of declaration?
 

So is it correct way of declaration?
Click to expand...
Depends on what you want to achieved. The output connected to inout must be tri-stateable (driven to z) to read the inout port.
 

Create symbol for other two modules(non top-level)
Import and wire these symbols in top-level module.
But observe the correct data directions between symbols.
 

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