BCM3420中文资料博通数据手册PDF规格书

OVERVIEW

The BCM7452 is a high-definition satellite, cable, and IP set-top box DVR solution offering integrated AVC (H.264/MPEG-4 Part 10), MPEG-4 Part 2, MPEG-2, DivX (3.11, 4.11, 5x), and VC-1 video decoding technology. It combines a data transport processor, high-definition/standard-definition AVC/MPEG-2/VC-1 video decoder, advanced-audio decoder, 2D graphics processing, high-quality video scaling and motion adaptive deinterlacing, six video DACs, stereo high-fidelity audio DACs, a MIPS32/MIPS16e™ class CPU, and a peripheral control unit providing a variety of set-top box control functions.

• Advanced HD AVC/MPEG-2/VC-1 decoder

• H.264/AVC main and high profile to level 4.1

• VC-1 simple, main, and advanced profile @ level 3

• MPEG4 Part 2, DivX® 3.11, 4.x, 5.x

• HD MPEG-2 and SD MPEG-2

• MPEG still-picture decode

• Advanced audio processor supporting the following:

• AAC LC, AAC LC+SBR level 2, AAC+ level 2

• Dolby® Digital, Dolby Digital Plus

• MPEG I layers 1, 2, and 3 (MP3)

• Windows Media® audio

• One pair of on-chip stereo high-fidelity audio DACs

• 3D SRS audio support

• One I2S input port and one I2S output port

• SPDIF output

• Advanced 2D-effects graphic engine

• Studio quality text and graphics at HD resolution

• Supports multiple layers and windows

• Digital noise reduction (DNR)

• Reduces MPEG artifacts including block noise reduction

• Reduces mosquito noise

• Motion-adaptive deinterlacer with reverse 3:2/2:2 pulldown

• Letterbox detection

• Multiple simultaneous, independent DVR channels

• OpenCable™ ready with on-chip MPOD support

• 300-MHz MIPS32®/16e class processor

• 64-bit DDR DRAM controller

• 32-bit for SD AVC/VC-1 decode