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东芝TC90407XBG DTV单片解决方案

2007-09-17 嵌入式在线收藏 | 打印

东芝公司的TC90407XBG单片解决方案是中低档数字电视的第二代产品.和第一代产品相比,它集成了两个模拟和一个数字输出,并集成了用于ATSC和有线码流解调器的VSB/QAM逻辑.

TC90407XBG有多个引擎,能对多媒体进行计算,以减轻主CPU的任务,使其更有效地对DTV应用进行系统管理.

本文介绍了TC90407XBG的主要性能,方框图以及软件架构图.

TC90407XBG/FG Single-chip Solutions for Digital TV
The TC90407XBG/FG is the second generation product from Toshiba targeted for mid- to low-end digital TV applications.

Compared to previous designs, it integrates more functional blocks on chip reducing system cost and supports new algorithms for improved picture quality. The device incorporates VSB/QAM logic on chip for ATSC and Cable streams demodulation.

The TC90407XBG/FG is capable of decoding single SD or HD stream and display content in standard-definition resolution (720 x 480 pixels) or half high definition resolution (960 x 1080 pixels).

       With two analog and one 8/16-bit digital outputs, the TC90407XBG is a very cost effectivesolution for CRT TV, LCD TV or digital-to-analog converter set-top box applications.

       The TC90407XBG/FG devices use multiple DSP engines to perform compute-intensive,multimedia operations to offload the main CPU for efficient system management of demanding digital TV applications. The TC90407XBG architecture also supports a unified 16-bit DDR memory system, as well as a NAND and a NOR flash memory controller to reduce overall system cost.

       Features

       162 MHz TX49/L3 64-bit MIPS RISC core
       8 KB each I & D cache
       Unified memory system
       DDR SDRAM controller (16-bit, 162 MHz)
       NAND & NOR Flash support
       Transport Stream Processor
       Fully compliant to ATSC and cable transport streams
       Video Decoder (SD decoding)
       MPEG-2 decoding (MP@ML and MP@SL) and MPEG-1 decoding
       Single-MPEG-2 decoding
       Video Decoder (HD decoding)
       MPEG-2 decoding for MP@HL for ATSC
       Display in HD resolution up to 960 x 1080
       720p or 1080i compliant
       HD-to-SD down-conversion
       Display in SD resolution
       Highlights
       Highly integrated systemon-chip (SoC) for digital TVs that incorporates a high-              performance 64-bit
       RISC processor and two highly optimized DSP processors
       Specifically designed for North American TV standards (ATSC & digital cable)
       Integrated VSB/QAM demodulator for ATSC TV
       Complete reference system with software and middleware support for quick product deployment
       Software and middleware based on Linux® OS
       Common API support for middleware and application development
       Decode single-standard definition stream or single high-definition stream
       Decode one audio stream
       Two 480i or one 720p/1080i analog video outputs and one SD/HD digital video output
       Unified memory architecture for optimum system cost
       Built-in MPEG-2 decoder, high-performance scalar and graphics controller for high-quality video output
       Low-power SoC with power-down modes
       Package: 292-pin PBGA and 256-pin LQFP
       Audio Processor
       MPEG- Audio, Dolby AC-3 decoding
       I2S and S/P-DIF Transmitter (IEC-60958/61937)
       Graphics Engine
       Two planes (YUV/Graphics)
       Alpha blending and video scaling
       Progressive scan (I/P conversion by line-interpolation)
       Video Output
       Dual NTSC Video Encoder
       4 DACs (supports two 480i analog outputs for SD and one 720p/1080i output for HD)
       4:2:2 YUV Digital-Output (ITU R656/R601)
       VBI re-insertion (closed-caption and CGMS-A)
       Interlaced or progressive output
       Interfaces and Peripherals
       8/16-bit local bus for NAND/NOR flash and other I/O devices (40.5 MHz), DMA       controller (2 ch), SIO (2 ch), PIO (10), timer/counter (three 24-bit), I2C (2 ch),        IR-decoding and IR-blaster
       Power-down and Standby Operations
       Package
       TC90407XBG – 292-pin PBGA package
       TC90407FG – 256-pin LQFP package in Q1’07
       TC90407XBG开发工具
       Reference Board:
       DLVM-GC and DLVM-GL reference modules
       Operating System:
       Monta Vista Software, Inc.: Monta Vista Linux
       Development Tools: Compilers, debugger and assemblers
       Software Support: Firmware, Device Drivers, ATSC middleware

       TC90407XBG/FG方框图: