Introduction
The i.MX25 family of processors are designed to meet the connectivity requirements of today’s automobile infotainment systems. To meet these requirements, the i.MX25 processors provide high-end features, such as CAN, USB connectivity, and audio connectivity at a price point that is suitable for all vehicles.
At the core of the i.MX25 is Freescales fast, proven, power-efficient implementation of the ARM® 926EJ-S™ core, with speeds of up to 400 MHz. The i.MX25 includes support for up to 133 MHz DDR2 memory, integrated 10/100 Ethernet MAC, and two on-chip USB PHYs. The automotive versions of the i.MX25 offer AEC-Q100 grade 3 qualification to meet stringent automotive quality requirements. The device is suitable for a wide range of applications, including the following:

• USB Connectivity for media
   storage/playback, personal media device
   interface, and firmware updates
• Bluetooth™ connectivity for hands free phone calling and streaming audio from wireless devices like phones or PND
• Control of the infotainment system through basic speech recognition or touch screen
• Smart toll and metering applications
• Secure data black box applications

FEATUREs of the i.MX25 processor include the following:
• Advanced power management—The heart of the device is a level of power management throughout the IC that enables the multimedia features and peripherals to achieve minimum system power consumption in active and various low-power modes. Power management techniques allow the designer to deliver a feature-rich product that requires levels of power far lower than typical industry expectations.
• Multimedia powerhouse—The multimedia performance of the i.MX25 processor is boosted by a 16 KB L1 instruction and data cache system and further enhanced by an LCD controller (with alpha blending), a CMOS image sensor interface, an A/D controller (integrated touchscreen controller), and a programmable Smart DMA (SDMA) controller.
• 128 Kbytes on-chip SRAM—The additional 128 Kbyte on-chip SRAM makes the device ideal for eliminating external RAM in applications with small footprint RTOS. The on-chip SRAM allows the designer to enable an ultra low power LCD refresh.
• Interface flexibility—The device interface supports connection to all common types of external memories: MobileDDR, DDR, DDR2, NOR Flash, PSRAM, SDRAM and SRAM, NAND Flash, and managed NAND.
• Increased security—Because the need for advanced security for tethered and untethered devices continues to increase, the i.MX25 processor delivers hardware-enabled security features that enable secure e-commerce, Digital Rights Management (DRM), information encryption, robust tamper detection, secure boot, and secure software downloads.
• On-chip PHY—The device includes an HS USB OTG PHY and FS USB HOST PHY.
• Fast Ethernet—For rapid external communication, a Fast Ethernet Controller (FEC) is included.
• i.MX25 only supports Little Endian mode.