Intel Q9400S Data Sheet - Page 13
Platform Environment Control Interface PECI - specifications
UPC - 735858207973
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Introduction memory and I/O transactions as well as interrupt messages pass between the processor and chipset over the FSB. • Storage conditions - Refers to a non-operational state. The processor may be installed in a platform, in a tray, or loose. Processors may be sealed in packaging or exposed to free air. Under these conditions, processor lands should not be connected to any supply voltages, have any I/Os biased, or receive any clocks. Upon exposure to "free air"(i.e., unsealed packaging or a device removed from packaging material) the processor must be handled in accordance with moisture sensitivity labeling (MSL) as indicated on the packaging material. • Functional operation - Refers to normal operating conditions in which all processor specifications, including DC, AC, system bus, signal quality, mechanical and thermal are satisfied. • Execute Disable Bit - Allows memory to be marked as executable or nonexecutable, when combined with a supporting operating system. If code attempts to run in non-executable memory the processor raises an error to the operating system. This feature can prevent some classes of viruses or worms that exploit buffer over run vulnerabilities and can thus help improve the overall security of the system. See the Intel® Architecture Software Developer's Manual for more detailed information. • Intel® 64 Architecture - An enhancement to Intel's IA-32 architecture, allowing the processor to execute operating systems and applications written to take advantage of Intel 64 architecture. Further details on Intel 64 architecture and programming model can be found in the Software Developer Guide at http:// developer.intel.com/technology/64bitextensions/. • Enhanced Intel SpeedStep® Technology - Enhanced Intel SpeedStep Technology allows trade-offs to be made between performance and power consumptions, based on processor utilization. This may lower average power consumption (in conjunction with OS support). • Intel® Virtualization Technology (Intel® VT) - A set of hardware enhancements to Intel server and client platforms that can improve virtualization solutions. Intel VT will provide a foundation for widely-deployed virtualization solutions and enables more robust hardware assisted virtualization solutions. More information can be found at: http://www.intel.com/technology/virtualization/ • Intel® Trusted Execution Technology (Intel® TXT)- Intel® Trusted Execution Technology (Intel® TXT) is a security technology by Intel and requires for operation a computer system with Intel® Virtualization Technology, a Intel Trusted Execution Technology-enabled Intel processor, chipset, BIOS, Authenticated Code Modules, and an Intel or other Intel Trusted Execution Technology compatible measured virtual machine monitor. In addition, Intel Trusted Execution Technology requires the system to contain a TPMv1.2 as defined by the Trusted Computing Group and specific software for some uses. • Platform Environment Control Interface (PECI) - A proprietary one-wire bus interface that provides a communication channel between the processor and chipset components to external monitoring devices. Datasheet 13