[ Memory Interface gated when not selected]

[whizkid123]

HI all,

I want to gate the Address, Data bus of the Memory when not selected from controlled.
what is the best possible ways to do it without adding more area on the address and data bus?

 

[rca]

If there are a direct connection between the processor and the memories, and only the chip select is gated, I don't really see without knowledge of your design, how you could gated address-data.. without additional logic.

Keep in mind, that you will have some buffers added along these nets during the placement-optimisation and hold time, so the mux/gate elements could be used to drive instead the buffers, so the additional area is not as much you could report after synthesis.

 

[whizkid123]

HI RCA,

My case is like - same address, data, mask bits driving into 4 cuts of memories. The chip select of the memories will be selected based on address.
My concern is that, when any cut is selected -still the address, data, mask bits of other 3 memories will be toggling. I want to reduce that activity.

THanks