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Dynamic voltage regulation in ADSP-BF53x series Blackfin processors is typically implemented with an internal voltage controller and an external MOSFET. The advantage of this approach is that a single voltage (VDDEXT) can be applied to the DSP subsystem, while the DSP derives the necessary core voltage (VDDINT) from the MOSFET. Internal registers allow the regulated core voltage to be software-controlled in order that the MIPS, and ultimately the consumed energy, can be coordinated to achieve optimal battery life.

PTM Published on: 2008-04-16