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What processor is inside my P990/M600/W950?

UIQ 3 based Sony Ericsson phones (P990i, M600i and W950i) use ARM9-based Philips Nexperia PNX4008 application processor in 90-nm CMOS technology, running at 208 MHz.

The CPU subsystem combines a 208 MHz ARM926-EJ processor with dedicated 32k instruction and 32k data caches. It also includes a memory management unit (MMU), a debug port, and a DMA controller.

The video subsystem includes an encode acceleration JPEG decoder, an MPEG-4/H.263 encoder/decoder, and a graphic accelerator, plus LCD and camera interfaces. It supports still pictures resolution of up to 4 Megapixels and can interface to LCD with up to QVGA 18-bit resolution and a refresh rate up to 60 fps. The MPEG-4/H.263 encoder/decoder works with all resolutions up to CIF (352x288) running at 30 fps.

The 2D/3D graphics accelerator (PowerVR from ARM and Imagination Technologies) complies with OpenGL ES 1.0 APIs. Running at 80 MHz, it delivers a typial performance of 150 Megapixels per second and 1.25 million polygons per second.

The audio subsystem combines a fully dedicated DSP (digital signal processor) with integrated digital-analog converters (DACs) and analog-digital converters (ADCs). The audio DSP can operate independently from the ARM CPU and can reference embedded RAM memories for full audio flexibility. For stereo sound, there are two integrated stereo DACs and one stereo ADC. There are also two PCM interfaces, carrying 8- or 16-kHz sample-rate voice channels.

The security subsystem (from Discretix) consists of three coprocessors, a random number generator, and a unique secret crypto key that uses embedded fuses. The PKI coprocessor supports RSA, ECC, DSS, and DH. The symmetric coprocessor supports DES, 3DES, and AES, while the Hash coprocessor supports SHA-I and MD5.


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