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A Programmable Unified Cache Support for GPRS Encryption System (PDF)
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Motorola Inc., Corp. Hdqtrs.
Advances in wireless technology have allowed portable electronic devices to become smaller and more complex, placing stringent power, performance and security requirements on the device's components. To address the growing need for longer battery life, higher performance and enhanced security for 3G appli-cations, an 8Kbyte, 4-way set-associative, unified (instruction and data) cache with programmable features was added to the M-CORE M3 core. These features include write mode selection, way management, and buffer enabling/disabling which allow the architecture to be optimized based on the application's require-ments. In this paper, we present the features of the unified cache architecture and illustrate the usefullness effect on power and performance for a GPRS encryption module (GEM) through benchmark analysis and actual silicon measurements.
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