8.3.3.1.2 Short Detect

The logic uses all three comparators (HIGH, MID and LOW) to detect the SHORT condition. When the MID and LOW comparators are de-asserted, the headroom control loop considers that string to be optimized - enough headroom, but not excessive. If at least one LED string is optimized and at least one other LED string has its HIGH comparator asserted, then the SHORT condition is detected. It is important to note that the SHORT condition requires at least two strings for detection: one in the optimized headroom zone (LOW/MID/HIGH comparators all de-asserted) and one in the excessive headroom zone (HIGH comparator asserted).

Fault is cleared by reading the fault register.