BACKGROUND OF THE INVENTION Mobile devices, such as but not limited to personal data appliances, cellular phones, radios, pagers, lap top computers, and the like are required to operate for relatively long periods before being recharged. These mobile…

BACKGROUND Embodiments of the invention relate to the field of electronic systems and power management. More particularly, embodiments of the invention relate to a method and apparatus for a zero voltage processor sleep state. As the trend toward adv…

BACKGROUND Many processors include a time stamp count (TSC) counter which is typically implemented as a counter that increments at a fixed rate. Some known TSC counters are clocked at a bus clock rate and a multiplier value is added each bus clock cy…

Minimizing the overall power conservation in a symmetric multiprocessor system disposed in a system-on-chip (SoC) depends on using voltage islands operated at different voltages such that similar circuits will perform at significantly different level…

IPA(Intelligent Power Allocator)模型的核心是利用PID控制器,Thermal Zone的温度作为输入,可分配功耗值作为输出,调节Allocator的频率和电压值. 由Power Management一般开发模型可知,包括模型建立,模型实现,验证. 1 IPA模型 PID控制器在Sustainable Power基础上,根据当前温度和Control Temp之间的差值,来调节可分配功耗值的大小,进而调节Cooling设备的状态,也即调整OPP(Voltage和Fre…

http://en.wikipedia.org/wiki/ARM_architecture ARM architecture     ARM architectures The ARM logo Designer ARM Holdings Bits 32-bit or 64-bit Introduced 1985 Design RISC Type Register-Register Branching Condition code Open Proprietary 64/32-bit archi…

FIELD OF THE INVENTION The present invention is related to computing systems, and more particularly to a system and method for adjusting to changes in processor performance. BACKGROUND INFORMATION Designers of mobile computing platforms are faced wit…

转自: Linux Core Power Management User's Guide (v3.14) http://processors.wiki.ti.com/index.php/Linux_Core_Power_Management_User's_Guide_(v3.14)?keyMatch=Linux%20Core%20Power&tisearch=Search-EN Linux Core Power Management User's Guide (v4.1) http://proc…

在uboot中添加logo,lvds接口的lcd显示不正常,出现波动.网上说是lvds时钟频率的问题. 使用示波器测量之后,发现频率是60M,而lcd最大频率才46.8M. 因此就需要更改uboot中lvds的时钟,本文介绍lvds的时钟配置. 参考链接: https://community.nxp.com/docs/DOC-172312 https://community.nxp.com/docs/DOC-93617 https://community.nxp.com/thread/30680…

Pswitch = Ceff * Vvdd^2*Fclk, Pshort-circuit = Isc * Vdd * Fclk, Pleakage = f(Vdd, Vth, W/L) 尽管对电压的scaling,可以以平方的关系减小dynamic/leakage power,但是voltage的scaling会影响gate delay, setup/hold timing,memory access time scale. voltage 的dynamic scaling,在processor…