SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The north bridge provides internal clock power management for all major components: bridges and register modules. Each component will track its own activity and shut off the clock tree when there has been no activity for 12 cycles. There is a 1 cycle latency for starting up the clock once off, so bus transactions may be initially stalled. The bus early wakeup signals can be used to wakeup the clocks before the transactions arrives to remove some of the latency impact.