Cable breaks can occur while a system is running, and as such, it is imperative that the DP83822 is able to detect the break and indicate that the link has been lost in an accurate and timely manner. As a Profinet compliant device, the DP83822 is expected to indicate a dropped link as soon as it occurs. This applicaton note covers the cable break test scenarios the DP83822 were tested for and the register configuration required for Profinet qualification.