Max. number of write ports in a register file

[omara007]

Hi Guys

What can be the usual maximum number of write ports in a register file ? .. In general, code doesn't say no to any number of write ports. Yet, what about libraries ? .. say I want to have 8 synchronous write ports, and 8 asynchronous read ports. Will this be a problem when targeting FPGA for example ?

 

[nareshgtr]

Explain clearly, then i can answer.... what is exact meaning of write ports and read ports...... please explain what exactly you require....

 

[FvM]

I guess, you are talking about a generic RTL structure, not dedicated memory cells of an FPGA. Generally, there's no other limitation than available resources and possibly timing constraints.

You should consider however, that write ports are involving point-to-point connections and multiplexers for the data path, requiring considerable logic and routing resources. Also conflicting sources have to been resolved somehow.