More on Crosspoints.

[René Schmitz]

Hi all!

Ok, so my addition to the problem would be: Using several crosspoint switch
ICs in parallel. Say for a fully connectible n*n matrix that would be n
chips. (If you only need less than n simultaneous connections per row you
get away with less.) In essence its the idea with the multiplexers, but the
chip count is reduced. (Didn't check the price however.)

Now the thing would look like several crosspoints with their inputs in
parallel, and the respective n-th outputs of all chips summed via resistors
(i.e. SIL array) into n opamps. Where the n-th summer would sum over the
n-th outputs of the chips. So this would look somehow like a cube, with
rows, columns and layers. There would be an added bonus that one could set
more than one connection from one input to one output (on different layers)
so that one could use this for some scaling purposes.


Bye,
 René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159