原标题：TI OMAP4460 Pandaboard ES双核手机开发方案

　　TI公司的OMAP44x系列是移动应用平台,其中的OMAP4460双核处理器主频达到了1.2GHz,OMAP4460搭载了Cortex A9 MP架构的双核心，1MB二级缓存，采用45nm工艺。内存方面支持双通道LPDDR2 1066的内存,而GPU采用PowerVR SGX540,频率高达384MHz。而Pandaboard ES开发板采用TI的OMAP4460双核处理器, 是当前全球唯一的双核ARM Cortex A9开发平台.本文介绍了OMAP4460主要特性,方框图以及OMAP4460 Pandaboard ES开发平台主要特性,方框图,详细电路图和材料清单.

　　Texas Instruments’ (TI) OMAP™4 mobile applications platform will redefine the mobile phone of tomorrow with new, innovative user experiences driven by PC-like web browsing, 1080p full HD video record and playback, intuitive user interfaces, location-based services and next-generation social networking applications. The OMAP 4 platform includes applications processors, a comprehensive software suite, power management technology and supporting components to bring nextgeneration Smartphones and Mobile Internet Devices (MIDs) to market quickly. The platform is future proof, offering the programmability and performance headroom to support new and emerging applications and standards. Not only will the OMAP 4 platform accelerate time to market and reduce research and development (R&D) time and costs for handset manufacturers, but its flexibility and openness will enable manufacturers to deliver innovative applications at breakthrough mobile computing performance.

　　TI tests the OMAP 4 platform for real-world use cases, accelerating time to market and enabling stunning user experiences.

　　At the heart of the OMAP 4 platform is a powerful system-on-chip that includes the perfect balance of power efficiency and high performance.

　　The OMAP 4 processor balances processing across four main engines: a programmable multimedia engine based on TI’s C64x DSP andpower-efficient, multi-format hardware accelerators; general-purpose processing based on the dual-core ARM?Cortex™-A9 MPCore™ supporting symmetric multiprocessing (SMP) and capable of speeds of more than 1 GHz per core; a high-performance programmable graphics engine; and an Image Signal Processor (ISP) for unparalleled video and imaging performance.

　　The OMAP 4 family includes two applications processors, both based on the dual-core Cortex-A9 MPCore general purpose processors: the OMAP4430 operates at up to 1 GHz, while the OMAP4460 operates at up to 1+ GHz. Both processors offer the full variety of subsystems and applications discussed below to deliver hardware and software system solutions that scale across customer roadmaps optimizing time to market, flexibility and R&D efficiency.

　　OMAP4460主要特性:

　　The OMAP4460 high-performance multimedia application device is based on enhanced OMAP™ architecture and uses 45-nm technology.

　　The architecture is designed to provide best-in-class video, image, and graphics processing sufficient to various applications.

　　The device supports the following functions:

　　 Streaming video up to full high definition (HD) (1920 × 1080 p, 30 fps)

　　 2-dimensional (2D)/3-dimensional (3D) mobile gaming

　　 Video conferencing

　　 High-resolution still image (up to 16 Mp)

　　The device supports high-level operating systems (OSs) such as:

　　 Windows™ CE, WinMobile™

　　 Symbian OS™

　　 Linux®

　　 Palm OS™

　　The device is composed of the following subsystems:

　　 Cortex™-A9 microprocessor unit (MPU) subsystem, including two ARM® Cortex-A9 cores capable of operation at 1.2GHz

　　 Digital signal processor (DSP) subsystem

　　 Image and video accelerator high-definition (IVA-HD) subsystem

　　 Cortex™-M3 MPU subsystem, including two ARM Cortex-M3 microprocessors

　　 Display subsystem

　　 Audio back-end (ABE) subsystem

　　 Imaging subsystem (ISS), consisting of image signal processor (ISP) and still image coprocessor (SIMCOP) block

　　 2D/3D graphic accelerator (SGX) subsystem

　　 Emulation (EMU) subsystem

　　The device includes state-of-art power-management techniques required for high-performance mobile products. Comprehensive power management is integrated into the device. The device also integrates:

　　 On-chip memory

　　 External memory interfaces

　　 Memory management

　　 Level 3 (L3) and level 4 (L4) interconnects

　　 System and connecting peripherals

　　图1.OMAP44x系统方框图

　　OMAP4460 Pandaboard ES开发系统

　　PandaBoard ES has an updated OMAP4 PandaBoard with the OMAP4460 processor from Texas Instruments. The development board features two ARM Cortex-A9 (M3) cores that can clock up to 1.2GHz, compared to the dual-core 1GHz cores on the original PandaBoard with the TI OMAP4430. In addition to all the existing features of the OMAP4430 processor-based PandaBoard, the PandaBoard ES also has a DSI expansion header, Bluetooth® low energy-capable WiLink™ 6.0 combo connectivity module and a switch to control bootorder. Like the original PandaBoard, the PandaBoard ES is ideal for the development and enhancement of feature-rich mobile platforms and products and can support Linux-based operating systems. The new PandaBoard ES is software-compatible with the original PandaBoard. Additional information about the board and its technology capabilities can be found at pandaboard.org

　　图2. OMAP4460 Pandaboard ES开发板外形图

　　Pandaboard ES is an OMAP4460 platform designed to provide access to as many of the powerful features of the OMAP4460 Multimedia Processor as possible, while maintaining a low cost. This will allow the user to develop software to utilize the features of the powerful OMAP4460 processor. In addition, by providing expandability via onboard connectors, the Pandaboard ES supports development of additional capabilities/functionality. See Table 1 for a listing of the Pandaboard ES features.

　　OMAP4460 Pandaboard ES开发板主要元器件:

　　 OMAP4460 Processor

　　 TWL6030 (Phoenix) Power Management Companion Device

　　 TWL6040 (Phoenix) Audio Companion Device

　　 TPS62361 Switching Power Supply

　　 POP Mobile LPDDR2 SDRAM Memory

　　 HDMI Connector (Type A) – for OMAP4460 HDMI Transmitter output

　　 HDMI Connector (Type A) – for DVI-D output sourced via OMAP4 parallel display output

　　 Audio Input & Output Connectors (3.5mm)

　　 SD/SDIO/MMC Media Card Cage

　　 UART via RS-232 interface via 9-pin D-Sub Connector

　　 LS Research Module – 802.11b/g/n, Bluetooth

　　OMAP4460 Pandaboard ES开发板主要特性:

　　图3.OMAP4460 Pandaboard ES架构方框图