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PXA270C1C520

Intel® PXA270 Processor

Intel 

Functional Overview

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The Intel® PXA270 processor is an integrated system-on-a-chip microprocessor for high

performance, dynamic, low-power portable handheld and hand-set devices as well as embedded

platforms. It incorporates the Intel XScale® technology which complies with the ARM* version

5TE instruction set (excluding floating-point instructions) and follows the ARM* programmer’s

model. The PXA270 processor also provides Intel® Wireless MMX™ media enhancement

technology, which supports integer instructions to accelerate audio and video processing. In

addition, it incorporates Wireless Intel Speedstep® Technology, which provides sophisticated

power management capabilities enabling excellent MIPs/mW performance.

The PXA270 processor provides a scalable, bi-directional data interface to a cellular baseband

processor, supporting seven logical channels and other features. The operating-system (OS) timer

channels and synchronous serial ports (SSPs) also accept an external network clock input so that

they can be synchronized to the cellular network. The processor also provides a Universal

Subscriber Identity Module* (USIM) card interface.

The PXA270 processor memory interface gives designers flexibility as it supports a variety of

external memory types. The processor also provides four 64 kilobyte banks of on-chip SRAM,

which can be used for program code or multimedia data. Each bank can be configured

independently to retain its contents when the processor enters a low-power mode. An integrated

LCD panel controller supports displays up to 800 by 600 pixels, permitting 1-, 2-, 4-, and 8-bit gray

scale and 1-, 2-, 4-, 8-, 16-, 18-, and 24-bit color pixels. A 256-byte palette RAM provides flexible

color mapping.

A set of serial devices and general-system resources offers computational and connectivity

capability for a variety of applications. Figure 2-1 shows the block diagram for a typical PXA270

processor system.

Electrical, Mechanical, and Thermal Specification

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