博通BCM70010 PC用高清音视频译码方案

博通(Broadcom)公司的BCM70010 是PC用的AVC/VC-1/MPEG高清音视频译码器,具有高性能和低功耗,支持从QCIF到1920 ×1080的兼容分辨率,能对PC和基于x86的嵌入式应用进行高清H.264,VC-1和MPEG-2视频压缩算法,一些应用包括蓝光盘,无风扇的嵌入机顶式HD播放器,IPTV或其它广播应用.本文介绍了BCM70010的主要特性,方框图以及功能方框图, PCI Mini 卡框图以及BCM70010和BCM70012 芯片组架构图.

BCM70010: AVC/VC-1/MPEG High-Definition Video and Audio Decoder for PCs

The BCM70010 introduces the advantages of next-generation standard and high-definition H.264, VC-1, and MPEG-2 video compression algorithms to PCs and x86 based embedded applications. Some applications include the playback of Blu-ray disks, fanless embedded set-top HD playback, and IPTV or other broadcast applications. The BCM70010 is a single-stream HD AVC/VC-1/MPEG-2 decoder chip capable of full HD real-time decoding. The high performance and low power consumption of the BCM70010 enable reduced CPU utilization and support for mobile and fanless platform designs. The BCM70010 supports any compliant resolution from QCIF up to 1920 ×1080. The BCM70010 can be used in onboard system designs or module form factors such as a mini-PCI module.

H.264

Complies with the ISO/IEC 14496-10 specification

Support for AVC high profile streams up to level 4.1 with a 40 Mbps maximum encoded bit-rate restriction

CABAC and CAVLC entropy decoding

Macroblock adaptive field/frame decoding VC-1

Complies with the SMPTE 421M-2006 specification

Supports Advanced Profile Level 3 with a 40-Mbps maximum encoded bit-rate restriction.

Supports simple and main profile decoding

MPEG-2

Complies with the ISO/IEC 13818-2 specification

Supports the Main Profile up to High Level at 81 Mbps

Multistandard Audio Decoding

AC3; AAC; MPEG-1 Layer I, II, and III (MP3); WMA; WMA Pro; DD+; DTS; and others.

Strong Media Security

The BCM70010 incorporates a security processor that allows host player software to send encrypted video elementary streams or A/V transport streams to be decrypted and decoded via the BCM70010. Coupled with the optional companion chip (BCM70012) additional security features like digital signature based firmware verification, HW based bus encryption, as well as unique hardware keys can be enabled. This allows the BCM70010 module to securely authenticate with the playback software and maintain integrity of premium media content.

主要特性:

Multi-standard HD/ED/SD video decoder

Up to H.264/AVC HP at L4.1 1080i, 40 Mbps

Up to SMPTE VC-1 AP at L3 1080i, 40 Mbps

VC-1 Simple and Main Profile (WMV9)

MPEG-2 MP @ ML

MPEG-2 MP @ HL

Multi-Standard HD Audio Decoder

MP2, MP3, AAC-HE, AAC-LC, DD, DD+, MLP, WMA, WMA Pro, DTS, DTS-HD support available

Uncompressed Video Output

YUV 4:2:0/4:2:2 (UYVY)

NV12/YUY2 YCbCr Format Support

BT.656/BT.1120 - compliant YCbCr 4:2:2 output

QCIF to 1080p support

Integrated 16-phase, 5-tap filter for both horizontal and vertical upscaling and downscaling

Strong Media Security

DES/3DES/AES encryption and decryption engine

Optional support for Digital signature verification for firmware

Low-power HD decode

Designed for notebooks and fanless designs

应用:

Fan-less embedded set-top HD playback

Blu-ray playback on PCs

Protected media playback on PCs

Embedded x86 based IPTV or other broadcast/streaming applications



图1.BCM70010 功能方框图



图2.PCI Mini 卡框图



图3.BCM70010/BCM70012 芯片组架构图