The cell matrix is a regular, multi-dimensional collection of cells. Each cell is connected to n neighbors (where n is fixed for the entire matrix), and each cell exchanges two bits of information with each neighbor. These bits are labeled C and D. Hence each cell has n C inputs, n D inputs, n C outputs and n D outputs.
If any of the C inputs to a cell are 1, that cell will be in C-mode. When all C inputs are 0, the cell is in D-mode.

c mode . d mode . simulators . core