7.3.7.3 LOS_INT_N

LOS_INT_N pin is an open drain output. When the channel that has been selected cannot detect a signal at the high-speed input pins (as defined by the assert levels), the pin pulls low. Pin 13 can be configured through share register 0xFF[5] for interrupt functionality.

In SMBus/SPI mode, this pin can be configured as an interrupt. This pin is asserted low when there is an interrupt and goes back high when the interrupt status register is read. There are 7 separate masks for different interrupt sources. These interrupt sources are:

1. If there is a LOS transition on IN0, irrespective of the input channel selected (2 separate masks).
2. If there is a LOS transition on IN1, irrespective of the input channel selected (2 separate masks).
3. HEO or VEO goes below a certain threshold as specified in the registers (1 mask).
4. Lock transition, whether it is asserted or de-asserted – disabled by default (2 mask).