ZHCSBT2G November 2012 – October 2017 66AK2H06 , 66AK2H12 , 66AK2H14
PRODUCTION DATA.
Increasing the device complexity increases its power consumption. With higher clock rates and increased performance comes an inevitable penalty: increasing leakage currents. Leakage currents are present in any powered circuit, independent of clock rates and usage scenarios. This static power consumption is mainly determined by transistor type and process technology. Higher clock rates also increase dynamic power, which is the power used when transistors switch. The dynamic power depends mainly on a specific usage scenario, clock rates, and I/O activity.
Texas Instruments SmartReflex technology is used to decrease both static and dynamic power consumption while maintaining the device performance. SmartReflex in the 66AK2Hxx device is a feature that allows the core voltage to be optimized based on the process corner of the device. This requires a voltage regulator for each 66AK2Hxx device.
To help maximize performance and minimize power consumption of the device, SmartReflex is required to be implemented. The voltage selection can be accomplished using 4 VCNTL pins or 6 VCNTL pins (depending on power supply device being used), which are used to select the output voltage of the core voltage regulator.
For information on implementation of SmartReflex, see Power Consumption Summary for KeyStone TCI66x Devices and Hardware Design Guide for KeyStone II Devices.
SmartReflex switching characteristics are shown in Table 11-5.