SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The BB2D subsystem operates from two clocks: an interface clock (BB2D_ICLK) and functional clock (BB2D_FCLK). The power, reset, and clock management (PRCM) module generates and distributes the clocks inside the device.
The BB2D_ICLK frequency is selected based on the whole device L3_MAIN interconnect clock frequency. For more information on the interface clock, see CD_DSS Clock Domain , in the chapter, Power, Reset and Clock Management .
When BB2D_ICLK is no longer required by the BB2D subsystem, it can be disabled by software at the PRCM level.
BB2D_ICLK is cut only if the BB2D is ready to go into IDLE state.
Using the clock source selection and the DPLL settings, the frequency of BB2D_FCLK can be adjusted.
When BB2D_FCLK is no longer needed by the BB2D subsystem, it can be cut by software at the PRCM level, if the module is ready to enter IDLE state.