http://www.bdti.com/products/reports_pxa27x.html

The Intel PXA27x, announced in April 2004, is a 32-bit fixed-point embedded processor family that targets PDAs and mobile wireless products—most notably, smart phones. The PXA27x is the next generation of Intel Personal Internet Client Architecture (PCA) application processors.

The PXA27x is based on an enhanced version of the Intel XScale core that is used in its predecessors, the PXA255 and the PXA26x PCA family. The key enhancement is the addition of Intel’s new “Wireless MMX” coprocessor and instruction set. Wireless MMX is intended to accelerate the processor’s performance on signal processing applications.

This report provides an independent analysis and evaluation of the digital signal processing capabilities of the PXA27x processor. It examines the key features of the PXA27x, including its data paths, execution units, memory architectures, and programming model.

The signal processing performance of the PXA27x is evaluated using a suite of digital signal processing benchmarks developed by BDTI. The report includes benchmark execution times, cost-execution times, and memory usage results for the PXA27x. Execution times combine cycle count results with the clock speed for the processor; cost-execution times combine execution-time results with chip pricing, as reported by the manufacturer.

The complete set of PXA27x benchmark results is included in an appendix in both tabular and graphical format and is presented alongside the results for several other processors to illustrate relative performance on digital signal processing algorithm kernels