博通(Broadcom)公司的BCM3556 是下一代系统级芯片(SoC)数字电视(DTV)解决方案.BCM3556集成了DVB-T COFDM地面电视和PAL/SECAM解调器,两个DVI/HDMI接收器,传输处理器,数字音频处理器,3D/2D图像处理,以太网MAC和PHY,模拟音频和视频的数字处理,模拟视频数字化和DAC功能,立体声高保真音频DAC,400MHz双线程MIPS处理器,以及提供电视控制功能的外设控制单元,支持高清AVC, VC-1和DVB-T MPEG-2流.本文介绍了BCM3556的主要特性,主要优势,方框图以及系统应用方框图.

The BCM3556 is the next generation of System-on-a-Chip (SoC) Digital Television (DTV) products from Broadcom® with 1080p60 input and output capability targeted for the EU Market. It combines a high level of integration with best-of-class picture quality, enabling TV manufacturers to reduce overall system cost (BOM) and improve picture quality, all with a single SoC. The BCM3556 combines DVB-T COFDM terrestrial and PAL/SECAM demodulators, two DVI/HDMI receivers, a transport processor, a digital audio processor, 3D/2D graphics processing, Ethernet MAC and PHY, digital processing of analog video and audio, analog video digitizer and DAC functions, stereo high-fidelity audio DACs, a 400-MHz dual-threaded MIPS processor, and a peripheral control unit providing a variety of television control functions. The BCM3556 also features an advanced video decoder capable of supporting high-definition AVC, VC-1, and DVB-T MPEG-2 streams. The integration of the DVB-T COFDM terrestrial demodulator reduces the overall cost of the external tuner module, resulting in cost savings for the customer. The BCM3556 also integrates four 10-bit ADCs with integrated front-end analog muxing that accept four CVBS inputs, three S-video inputs, three component inputs, one PC input, one full SCART input with fast blanking, and one Sound IF (SIF) input at the same time without the requirement for any off-chip muxing ICs. The BCM3556 offers two HDMI 1.3a receivers, a motion adaptive deinterlacer, HD Analog Noise Reduction, and an analog video decoder with 3D comb for PAL and Y/C separation for SECAM. The multiformat video decoder in the BCM3556 is capable of supporting high-definition AVC, VC-1, and DVB-T MPEG-2 streams. AVC support is up to High Profile Level 4.1. New tools in the AVC Fidelity Range extensions are supported, including 8x8 transform and spatial prediction modes and adaptive quantization matrix. The video decoder also supports high-definition VC-1 (Advanced Profile Level 3, Main, and Simple profiles) and DVB-T-compliant MPEG-2, Main Profile at Main and High Levels. The BCM3556 has an advanced programmable audio processor capable of decoding a broad range of formats including Dolby Digital, Dolby Digital Plus, AAC 5.1, AAC+ Level 2, AAC+ Level 4, WMA, and MPEG-1 Layer 1, 2, and 3 with simultaneous pass-through support. The BCM3556 also supports 3D SRS Audio and includes an analog audio decoder for BTSC and A2 formats. The BCM3556 also integrates an analog audio switch that accepts six stereo inputs. In addition, the SoC supports SPDIF and I2S inputs. One SPDIF, two I2S, and three analog audio outputs are available. The SoC family also has an integrated advanced Picture Enhancement Processor (PEP) to improve sharpening and perform picture post-processing functions (e.g., autoflesh, green boost, black and blue stretch). The PEP engine is fully programmable and can be optimized by the TV manufacturer to meet their respective quality requirements. Also integrated is a video encoder for NTSC and an advanced 2D/3D graphics for OSD acceleration. The BCM3556 supports direct PC inputs up to UXGA 1600x1200 formats with autophase and automode detection and supports dual LVDS outputs to support 1080p60 panels. The BCM3556 integrates a 400-MHz 32-bit MIPS dual CPU with two 32- KB instruction caches and a combined 64-KB data cache with a 128-KB L2 cache, and a 32-bit 800/1066-MHz DDR2. The BCM3556 also supports an 8-bit external NAND Flash interface and SPI Flash interface for booting. Integrated peripherals include two USB2.0 ports, three UARTs, controllers for SPI, BSC, keypad, LED and IR Tx/Rx, and an Ethernet port with MAC and integrated PHY. The BCM3556 is available in several package options: WXGA and FHD, PIP and non-PIP, or MPEG-only and combined AVC/MPEG-2.

[1] [2]  下一页