BCM7401
®
AVC/MPEG-2/VC-1 HD DIGITAL VIDEO SYSTEM-ON-A-CHIP SOLUTION FOR SATELLITE, IP,
CABLE, AND WATCH-AND-RECORD DVR
FEATURES
•
Advanced HD AVC/MPEG-2/VC-1 decoder
FEATURES (CONT.)
•
HD analog video encoder with simultaneous SD outputs
•
•
•
•
•
•
•
•
•
•
•
H.264/AVC main and high profile to level 4.1
•
VC-1 advanced profile @ level 3
•
VC-1 simple and main profile
•
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 I
2
S input port and one I
2
S 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
SATA I/F for DVR applications
•
NTSC-M, NTSC-J, PAL-BDGHIN, PAL-M, PAL-Nc analog
outputs
•
480i/480p/576i/576p/720p/1080i output formats
•
Component RGB or YPrPb output
•
HD-DVO Output
•
Macrovision
®
7.1 support
•
SCART 1 and 2
•
Component, S-Video, and composite via six on-chip V-DACs
•
VBI encoders for CC/TTX with NABTS/CGMSA/WSS/Gemstar
®
standards and dedicated TTX sideband
•
RF modulator with BTSC encoder
•
ITU-R-656 input and output ports
•
HDMI 1.1/DVI 1.0 Mac and PHY with HDCP 1.1
•
Broadcom security processor
•
AES/1DES/3DES/CSS/CPRM/DTCP copy protection
•
MPEG-2/DIRECTV/DVB/ARIB data transport demux with
1DES/3DES/DVB/Multi2/AES descramblers
•
V.92-capable soft modem with integrated SiLab Si305x system
side device
•
3.3V 33-MHz PCI 2.2
•
Dual USB 2.0 host controller with dual-port transceiver
•
Additional independent USB 1.1 host controller
•
Serial ATA interface
•
Ethernet Mac and PHY
•
UHF remote control receiver
•
Dual smart card support
AVC/MPEG-2/VC-1 Platform Example
STEREO AUDIO OUT
S/PDIF OUT VIDEO OUT
YPbPr OUT RF OUT
Dual
USB 2.0
10/100
Ethernet
Cable IN
FIREWIRE
HDMI OUT
Power
Audio
Out
HDMI/DVI
Out
S/PDIF
Out
NTSC
PAL
Video
Comp.
Video
RF
Mod
DDR SDRAM
16 MB
USB 2.0
Ethernet
Diplexer
1394
MAC/PHY
DDR x64
SDRAM
200 MHz
256 MB
TS In
BCM3420
BCM7401
450 DMIPS
MPEG-2 HD
AVC, VC-1
SATA
Flash
64M x8
TS In
TS In
PCI
BCM3255
DOCSIS
®
2.0
800+ DMIPS
BCM3420
Front Panel I/F
BCM3420
HDD
IR and
UHF I/F
OpenCable
™
CableCARD
™
OVERVIEW
PCI 2.2 & Flash
ATA
DDR-SDRAM
USB 2.0 x2
USB 1.1
Bus Bridge
300-MHz
MIPS32/16e
32KI & 32KD
MMU, 4K RAC
DRAM Controller
Dual
USB
2.0
IR/UHF
RX
USB
1.1
IR TX
Triple
UARTs
IR In x2
UHF In
IR Out
UARTx3
GPIO
DMA
Secure Processor
R
O
M
O
T
P
Advanced
2D Graphics
Display
Engine
ITU-R-656
I
2
S In
DCAS
SCARD
MCARD
Transport
Input x5
ITU-R-656
Decoder
Video
- Scalers
- Compositors
- Digital noise
reduction
- Delinterlacing
Multiformat
Audio
Processor
GPIO
PCM
Audio
Engine
&
DACs
L
R
SPDIF
1
2
S Out
MPEG-2/DVB Transport
Dual
PVR
Engine
w/Trick
Modes
High definition
AVC/MPEG-2/
VC-1
Video Decoder
Soft Modem,
Si305X,
Ethernet
10/
100BASE-T
BSC
Dual
Composite
NTSC/PAL
VEC with 6
DACs
HD/SD Video
SD Video
ITU-R-656/TTX
HDMI
NTSC
Channel 3/4
RF Mod.
ISO7816 I/F
x2
RMX
x2
Gateway
Services
BSC x4
BCM7401 Block Diagram
The BCM7401 is a high-definition satellite, cable, and IP set-top box DVR
solution offering integrated AVC (H.264/MPEG-4 Part 10), MPEG-2, and
VC-1 video decoding technology. It combines a data transport processor,
high-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.
The MPEG-2 DVB-compliant transport stream/PES parser and
demultiplexer is capable of simultaneously processing 256 PIDs via 128 PID
channels in up to five independent external transport stream inputs and two
internal playback channels. All 128 PID channels can be used by the record,
audio, and video interface engine (RAVE), PCR processing, message filter,
and for output via the high-speed transport or remux module. The data
transport module can be configured to support eight record channels for PVR
functionality and six AV channels to interface to audio and video decoders.
The transport provides 1DES/3DES/DVB/Multi2/AES descrambling
support. A memory-to-memory DMA security module may be programmed
for supporting AES/1DES/3DES/CSS/CPRM/CPPM/DTCP copy protection
algorithms/standards. The BCM7401 features the Broadcom secure
processor providing secure key generation, management, and protection.
An advanced video decoder is featured in the BCM7401, capable of
supporting high-definition AVC, VC-1, and MPEG-2 streams. AVC support
is for main- and high-profile to level 4.1 for 720p and 1080i high-definition
support or to level 3.1 for standard definition streams. AVC high profile was
added to the fidelity range extensions specifically to address the needs of
consumer broadcast and playback applications. Tools include additional
transform sizes and spatial prediction modes and support for adaptive
quantization matrix. The video decoder also supports high-definition VC-1
(advanced-profile level 3, main, and simple profiles) and MPEG-2, main
profile at main and high levels. The BCM7401 has an advanced audio
processor capable of decoding Dolby Digital, Dolby Digital Plus, AAC 5.1,
AAC+ level 2, and MPEG 1 layers 1, 2, and 3 with simultaneous pass-
through support. 3D SRS audio is also supported. Available audio outputs are
I
2
S, SPDIF, and one pair of analog outputs.
High-quality video and graphics processing is integrated, featuring advanced
studio quality 2D graphics processing. Also included are motion-adaptive
deinterlacing with 3:2 pulldown, and letterbox detection. Digital noise
reduction minimizes mosquito noise and MPEG artifacts, including block
noise.
The BCM7401 has a dual-stream analog video encoder with Macrovision
that supports the following output standards: NTSC-M, NTSC-J, PAL-
BDGHIN, PAL-M, and PAL-Nc. The following output formats are
supported: composite, S-Video, SCART, RGB, and YPrPb component. The
following output resolutions are supported: 480i, 480p, 576i, 576p, 720p, and
1080i. Six output video DACs are available to be shared among the output
functions. The BCM7401 also supports output over an HDMI interface and
a channel 3/4 RF modulator. An ITU-R-656 output port is also available with
teletext sideband.
The BCM7401 incorporates a complete MIPS32™-based microprocessor
subsystem, including caches with bridging to memory and a local bus.
Integrated peripherals include three UARTS, two ISO7816 smart card
interfaces, counter/timers, a GPIO, a LED/keypad controller, IR receivers, an
IR blaster, a UHF remote control receiver, an integrated soft modem system
side device, and BSC and SPI controllers. Advanced connectivity features
include two USB 2.0/1.1 ports, an additional independent USB 1.1 port, a
serial ATA port, and an Ethernet port with Mac with integrated PHY and
alternate media independent interface (MII).
Broadcom
®
, the pulse logo,
Connecting everything
®
, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
7401-PB03-R
7/26/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
