SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
Adaptive Voltage Scaling (AVS) Class 0 (also referred to as SmartReflex™) is a power-management technique used to control the operating voltage of a device to reduce its active power consumption.
With SmartReflex™, the power supply voltage is adapted to the silicon performance in one way:
SmartReflex achieves optimal performance/power trade-off for all devices across the technology process spectrum.
The static correction of the device voltage level (see Figure 3-14) is based on the desired performance level and silicon performance characteristics of the device. As a result of process dispersion, each die has its specific silicon performance. The range of the process distribution defines the weak devices (low-performance silicon) and the strong devices (high-performance silicon).
A weak device is a device with the lowest performance tolerated for a process distribution; that is, at the typical voltage, the inherent maximum frequency is the lowest frequency of the chip distribution. Considered as the worst case, weak devices are used to constrain the target frequency of all the chips (OPP definition).
A strong device is a device with the highest performance tolerated for a process distribution. The inherent maximum frequency at the typical voltage is greater than the targeted frequency.
Figure 3-14 shows that with the SmartReflex voltage-control architecture, it is possible to compensate for the device silicon characteristics and obtain optimal performance characteristics. Based on the device characteristics, the device voltage level can be adjusted for specific performance level.
Figure 3-15 is a functional overview of the SmartReflex voltage-control architecture of the device connected to an external power IC.
SmartReflex voltage control consists of the following modules:
The device supports one operational mode for SmartReflex voltage control: