JAJSLL2B April 2021 – November 2021 DP83561-SP
PRODUCTION DATA
The DP83561-SP has phase lock detector to continuously monitor the PLL an raises a instantaneous interrupt when it goes out of lock. When the phase difference is higher than a programmable delay window, the lock detector output is deasserted.
Once they align again, the lock detector waits for a programmable number of reference cycles before asserting the lock signal again. This monitor can particularly be used to monitor any impact on the data transmission due to SEU.
To enable the PLL lock interrupt, bit[11] of register 0x01D7 needs to be set to 0 to unmask the interrupt. Then, one of the GPIO pins must be configured to the functionality of SEFI_INTERRUPT.