Between each group of two adjacent channels (for example, between channels 0–1, 2–3, 4–5, and 6–7) is a full 2×2 cross-point switch. The cross-point can be configured through SMBus registers to operate as follows:

• Straigh-thru mode
• Multiplex two inputs to one output
• Fanout one input to two outputs
• Cross two inputs to two outputs

Figure 6-1 shows the four 2x2 cross-points available in the DS280DF810, and Figure 6-2 shows how each cross-point can be configured for straight-thru, multiplex, de-multiplex, or cross-over applications. Refer to the DS280DF810 Programming Guide for details on how to program the cross-point through SMBus registers.

Figure 6-1 Block diagram showing all four 2x2 cross-points in the DS280DF810

Figure 6-2 Signal distribution options available in each 2x2 cross-point (channel A can be 0, 2, 4, or 6; channel B can be 1, 3, 5, or 7)