Input port and input output port declaration in top module

[sandy2811]

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?

 

[FvM]

So is it correct way of declaration?

Depends on what you want to achieved. The output connected to inout must be tri-stateable (driven to z) to read the inout port.

 

[jamespond]

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.