1. Field of the Invention This invention relates in general to an integrated circuit and more specifically to well biasing circuitry for transistors of an integrated circuit. 2. Description of the Related Art Integrated circuits utilize transistors,…

1.Noise Margin 不管是TTL还是CMOS Logic Level,都会有门限.如,5V CMOS的VoutH > 4.4V, VoutL <0.33V;而它对应的输入电平VinH >3.5 , VinL <1.5V.所以,这里5V COMS的noise margin为VnH=4.4-3.5=0.9V. 为什么要有Noise Margin?因为信号在传输的时候会有噪音引入,同时,肯能会因为线路阻抗的不匹配而有发射信号在传输线上回荡.原本4.4V的高电平,加些乱七八糟的信…

BACKGROUND OF THE INVENTION The present invention relates to a semiconductor integrated circuit device having a PN Vt balance compensation circuit for compensating a threshold voltage difference between a PMOS transistor and an NMOS transistor and ca…

BACKGROUND OF THE INVENTION The present invention relates generally to single-instruction, multiple-data (SIMD) processing and, more specifically, to a technique for saving and restoring thread group operating state. In a conventional SIMD architectu…

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 The present disclosure relates generally to information processing systems and, more specifically, to a mechanism that maintains the architectural state values for both active and inactive software threads that may be executed on a process…

BACKGROUND Malicious code, known as malware, which includes viruses, worms, adware, etc., may attack core components of the operating system to compromise key applications, including critical applications that operate in the operating system kernel,…

BACKGROUND The present disclosure relates generally to integrated circuits, such as field programmable gate arrays (FPGAs). More particularly, the present disclosure relates to compilation of programmable logic on in an integrated circuit (e.g., an F…

BACKGROUND Advances in semi-conductor processing and logic design have permitted an increase in the amount of logic that may be present on integrated circuit devices. As a result, computer system configurations have evolved from a single or multiple…

BACKGROUND As processing resources have increased, demands to run multiple software programs and operating systems on a single microprocessor have also increased. To meet these demands virtual environments have been developed to allocate a single com…

BACKGROUND Processor power consumption has become a major issue in recent years. The current trend of processor design to multi-core architecture as eased the pressure on power consumption. However, power consumption still grows linearly with the num…

BACKGROUND A virtual machine (VM) architecture logically partitions a physical machine, such that the underlying hardware of the machine is time-shared and appears as one or more independently operation virtual machines. A computer platform in a virt…

BACKGROUND Typically, a multithreaded processor or a multi-processor system is capable of processing multiple instruction sequences concurrently. A primary motivating factor driving execution of multiple instruction streams within a single processor…

BACKGROUND Generally, the concept of virtualization in information processing systems allows multiple instances of one or more operating systems (each, an "OS") to run on a single information processing system, even though each OS is designed to…

A computer system is described having one or more host processors, a host chipset and an input/output (I/O) subsystem. The host processors are connected to the host chipset by a host bus. The host chipset is connected to the input/output subsystem by…

BACKGROUND The present disclosure relates to the handling of interrupts in a environment that utilizes virtual machines, and, more specifically, to the steering of interrupts between multiple logical processors running virtual machines. The virtualiz…

BACKGROUND The present disclosure relates to the resource management of virtual machine(s) using hardware address mapping, and, more specifically, to facilitate direct access to devices from virtual machines, utilizing control of hardware address tra…

BACKGROUND This disclosure relates generally to the field of computer graphics. More particularly, but not by way of limitation, it relates to technique for manipulating sprites in a rendering system for use with a graphics processor unit (GPU). A sp…

BACKGROUND Electronic devices, such as electronic book readers ("eBook reader devices"), cellular telephones, portable media players, desktop computers, laptops, tablet computers, netbooks, personal digital assistants, and the like, rely on elec…

# # List of USB ID's # # Maintained by Vojtech Pavlik <vojtech@suse.cz> # If you have any new entries, send them to the maintainer. # The latest version can be obtained from # http://www.linux-usb.org/usb.ids # # $Id: usb.ids,v 1.139 2004/02/14 00:1…

IEEE 754-1985 was an industry standard for representing floating-point numbers in computers, officially adopted in 1985 and superseded in 2008 by IEEE 754-2008. During its 23 years, it was the most widely used format for floating-point computation. I…

绑定角度尽量在45°之内,多于这个角度,绑定时候,银线不好打入焊盘.而且打入焊盘的尾部可能短路到相邻的焊盘,绑定焊盘之间的间距一般在4MIL为极限,半场的工艺一般就这样了.而且焊盘离被绑定的IC引脚最小在0.6MM,最大不超过3MM ,也就是他们之间. 绑定的焊盘如果分为好几层,尽量地线焊盘在最内层.一般IC部分会放一个铜皮,为地属性,所以内层焊盘尽量为地属性.信号焊盘绑在最外层,如走线.中间层为电源层,而且要留出口.绑定IC下面不能打孔,打孔绑定良率很差. 1. 目标 此文给那些正试着用裸芯片…

http://e2e.ti.com/blogs_/b/analogwire/archive/tags/DAC%2bEssentials DAC Essentials: A new blog series A digital-to-analog converter, or DAC, performs the opposite function of an analog-to-digital converter, or ADC. Duh, right? But, have you ever wond…

A technique is provided for generating stubs. A processing circuit receives a call to a called function. The processing circuit retrieves a called function property of the called function. The processing circuit generates a stub for the called functi…

An apparatus and method is described herein for providing robust speculative code section abort control mechanisms. Hardware is able to track speculative code region abort events, conditions, and/or scenarios, such as an explicit abort instruction, a…

A multi-way cache system includes multi-way cache storage circuitry, a pseudo least recently used (PLRU) tree state representative of a PLRU tree, the PLRU tree having a plurality of levels, and PLRU control circuitry coupled to the multi-way cache s…

Security arrangements for a universal serial bus (USB) protocol stack of a USB host system are provided. The security arrangements prevent an unauthorized or suspicious USB device from communicating with the host system, detect suspicious activity or…

http://baike.baidu.com/view/16839.htm?fr=ala0_1_1 步进 编辑   步进(Stepping)是CPU的一个重要参数,也叫分级鉴别产品数据转换规范,“步进”编号用来标识一系列CPU的设计或生产制造版本数据,步进的版本会随着这一系列CPU生产工艺的改进.BUG的解决或特性的增加而改变,也就是说步进编号是用来标识CPU的这些不同的“修订”的.同一系列不同步进的CPU或多或少都会有一些差异,例如在稳定性.核心电压.功耗.发热量.超频性能甚至支持的指令集方面…

http://en.wikipedia.org/wiki/Chipset Chipset From Wikipedia, the free encyclopedia     A chipset is a set of electronic components in an integrated circuit that manages the data flow between the processor, memory and peripherals. It is usually found…

A speculative store buffer is speculatively updated in response to speculative store memory operations buffered by a load/store unit in a microprocessor. Instead of performing dependency checking for load memory operations among the store memory oper…