Interface Implementation

[vinun_7]

There are 2 ways to implement a module's bus interface.

1) Use tristate buffers as drivers for muxing read & write data bus

2) Use seperate read & write data bus

What are the advantages & disadvantages of these schemes. Which one is better?

 

[yln2k2]

Hi ,

Rule of thumb , no tristate in SOC ( it will consume more power) .
use separate bus for read and write .
you may need more cycles as you need to generate control signal for mux ...


Thanks & Regards
yln

 

[sameer_dlh25]

Hi vinun_7,

Tri state design are area efficient but creates a lot of problem during power budgeting and timing analysis. In short they are difficult to implement.

Normal separate buses are easier to implement but area is always the consern.:idea: