The status pins can be monitored for feedback or in some cases used for input depending upon device programming. For example:

• The CLKin_SEL0 pin may indicate the LOS (loss-of-signal) for CLKIN0.
• The CLKin_SEL1 pin may be an input for selecting the active clock input.
• The Status_LD1 pin may indicate if the device is locked.
• The Status_LD2 pin may indicate if PLL2 is locked.

The status pins can be programmed to a variety of other outputs including PLL divider outputs, combined PLL lock detect signals, PLL1 Vtune railing, readback, and so forth. Refer to Section 8.6 for more information.