AMD AMD-K6-2/400 User Guide - Page 28
AMD PowerNow!™ Technology for Enhanced Power Management
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Preliminary Information AMD-K6™-2E+ Embedded Processor Data Sheet 23542A/0-September 2000 AMD PowerNow!™ Technology for Enhanced Power Management AMD has added a number of new power management features to the low-power versions of the AMD-K6-2E+ processor. Collectively, these hardware and software features are called AMD PowerNow!™ technology. AMD PowerNow! technology allows the AMD-K6-2E+ processor to run at different frequencies and voltages, depending on the application's need for maximum performance or the most efficient power utilization. AMD PowerNow! technology includes AMD's unique "automatic mode" feature, which allows the system to monitor application usage and to continuously vary the operating frequency and voltage, delivering performance on demand while dissipating the lowest amount of power possible. s When application demands require the processor to run at maximum performance, the AMD PowerNow! technology steps up the performance to meet the demand. s As platform demand for performance subsides, AMD PowerNow! technology can dynamically drop into a lower power state. AMD PowerNow! technology enables embedded products to dynamically manage power and performance. System Management Mode and Other Power Management Features The AMD-K6-2E+ processor includes the complete industry-standard system management mode (SMM), which is critical to system resource and power management. The AMD-K6-2E+ processor also features the industry-standard Stop-Clock (STPCLK#) control circuitry and the Halt instruction, both required for implementing the ACPI power management specification. Microarchitecture The AMD-K6-2E+ processor's 6-issue RISC86 microarchitecture is a decoupled decode/execution superscalar design that implements state-of-the-art design techniques to achieve leading-edge performance. Advanced design techniques implemented in the AMD-K6-2E+ processor include multiple x86 instruction decode, single-clock internal RISC operations, ten execution units that support superscalar operation, out-of-order execution, data forwarding, speculative execution, and register renaming. 6 AMD-K6™-2E+ Embedded Processor Chapter 1