6:2 Mux implementation

[INS-ANI]

Can anybody give me insight about 6:2 mux? I am aware of simple x:1 mux, but have never thought about more than one output mux.
In an interview i was told to implement 6:2 mux using 2:1 mux.

Please share your thoughts.

Thanks

 

[ADITYAVARDHAN]

I think it is not possible because we need select lines to select the output for a MUX.As we need 2 outputs we must have two select lines at the same time which is not possible.

 

[std_match]

Can anybody give me insight about 6:2 mux?
....
In an interview i was told to implement 6:2 mux using 2:1 mux.

Do you mean that one of the 6 inputs should be connected to one of the outputs, and the other output should be zero (or one) ?

In that case, why not do a 6:1 mux followed by a 1:2 demux?
The 1:2 demux can be implemented with two 2:1 muxes,
one for each output.

I would call this a "crossbar", not a "mux".

 

[INS-ANI]

@std_match, I am not sure what the interviewer meant. I know how to implement a 6:1 mux, but in my course of study i have never come across a x:2 mux.
The confusion is, it could be a decoder, but as we know the general convention is x:y, where x is no if input lines and y is no of output lines. The no of select lines depend on x(encoder) and y(decoder).

Now, the question is:
1) Is there any mux implementation of 4:2 or 6:2 type?
2) Is there any other mux naming convention i am not aware of?

In that case, why not do a 6:1 mux followed by a 1:2 demux?
The 1:2 demux can be implemented with two 2:1 muxes,
one for each output.

Can you give more details what you meant.

---------- Post added at 15:35 ---------- Previous post was at 15:34 ----------

@std_match, I am not sure what the interviewer meant. I know how to implement a 6:1 mux, but in my course of study i have never come across a x:2 mux.
The confusion is, it could be a decoder, but as we know the general convention is x:y, where x is no if input lines and y is no of output lines. The no of select lines depend on x(encoder) and y(decoder).

Now, the question is:
1) Is there any mux implementation of 4:2 or 6:2 type?
2) Is there any other mux naming convention i am not aware of?

In that case, why not do a 6:1 mux followed by a 1:2 demux?
The 1:2 demux can be implemented with two 2:1 muxes,
one for each output.

Can you give more details what you meant.