Switch implementation for NOCs

[olekol]

Hi all!
I'm getting into Network On Chip and I have a very basic question. I wonder how a simple switch with 2 inputs and 2 outputs is implemented?
Let's say I have two 1 bit wide wires as input and two wires as output. I want to send on each of these wires 10 bit series and divide the 20 bits differently in the outputs (15-5 for example).
Where can I find information on such a switch?

Thanks!

 

[sdram]

Answer may not cover all questions but following are links where you can find information about NoC simulators and source code.
https://github.com/mattbirman/Network-on-Chip-in-VHDL Network-on-Chip in VHDL
https://www.cs.cmu.edu/~mpapamic/projects/connect.html NoC Simulator