BCM7010 [ETC]
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| 型号： | BCM7010 |
| 厂家： | 
ETC |
| 描述： |
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| 文件： | 总2页 (文件大小：45K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
B C M 7 0 1 0
P RODUCT
B C M 7 0 1 0
S E T - T O P
B O X
D E C O D E R
B C M 7 0 1 0 F E A T U R E S
S U M M A R Y O F B E N E F I T S
The Broadcom® BCM7010 MPEG system-on-a-chip is
used in digital set-top box applications to deliver video
and audio signals to a television.
The BCM7010 design is shipping in volume
production today with a proven track record for
deployment.
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Complete MPEG-2 Subsystem
• Supports All North American Cable Requirements
• Error Detection/Concealment Throughout Design
The BCM7010 is compliant with the MPEG-2
systems and video specifications, and the Dolby
Digital AC-3 specification.
MPEG-2 System Transport Decoder
• PCR Clock Recovery
• Automatic Audio/Video Synchronization Circuitry
• Jitter Handling
Supports all North American Cable Industry
Legacy requirements.
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A highly-integrated solution enabling low
complexity/ low cost digital set-top box IRDs.
• Splice Point Handling
Integrated audio and video digital to analog
converters (DACs) reduce system manufacturing
costs and complexities.
MPEG-2 Video Decoder
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• Vertical/Horizontal Filters for Resizing/Repositioning
• Supports 3:2 Pulldown, Pan & Scan Automatically
• Closed Captioning, VITS Support
• CCIR 656 Output
Dolby® Digital AC-3 Compliant Audio Decoder
• Includes Audio DAC’s for R/L Channel Outputs
• Implements Two-channel Mixdown
Supports the use of both low-cost SDRAM or EDO
DRAM.
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The Dolby Digital AC-3 decoder and the MPEG-2
video decoder are hardwired solutions requiring
minimal CPU resources.
• Supports SPDIF (AES/EBU) Serial Data Transmission
• Supports Dynamic Range Compression
Interfaces seamlessly to all Broadcom physical layer
devices including QAM, QPSK and xDSL product
lines.
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On-screen Display Graphics
• 4/8 bit/pixel with 16 Level Blend OSD Overlay
Capability
NTSC/PAL Video Encoder with Macrovision™ and
Integrated Triple DACs
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NTSC/PAL Encoder
• Includes Triple Video DAC for Composite and S-Video
Outputs
• Supports Macrovision 7.01
S e t -To p Bo x Blo c k Dia g ra m
QAM
QPSK
xDSL
Audio
Video
BCM7 0 1 0
S e t -t o p Bo x De c o d e r
RF
IN
Decryption
Tuner
Receiver
Memory
I/O
CPU
B C M 7
0
1
0
O V E R V I E W
System
DRAM
MPEG-2
Transport
Demux
Dolby
AC3
Decoder
DRAM
Arbiter
Σ∆
DAC
Transport
I/F
DRAM
Controller
Audio
MPEG-2
Video
Decoder
OSD Video
Graphics
Processor
NTSC/PAL
Video
Encoder
Triple-
Video
DAC
Data
Data
Video Out
MBUS
Outputs
Processor
System
Clocks
Clock
Generator
MBUS
Master
Microcontroller
Interface
Scan
Logic
Test
Interface
JTAG
Test
GAP
S/DRAM
System Bus
Misc Port
The BCM7010 Set-Top Box Decoder is a highly-integrated
system solution targeted at all types of digital set-top boxes.
Integrated features in the BCM7010 include a fully compliant
MPEG-2 Transport stream parser and demultiplexer, an MPEG-
2 compliant video decoder with error concealment capability, a
Dolby Digital AC-3 audio decoder with audio DACs for the right
and left output channels, an On-Screen-Display engine
supporting 4 and 8-bit per pixel graphics with 16-level blend
capabilty, and a digital NTSC/PAL video encoder with
Macrovision 7.01 and triple video DACs which support both
composite and S-Video outputs. The BCM7010 microprocessor
interface is used to control and monitor the BCM7010 and is
compatible with many widely accepted microprocessors used
throughout the set-top box market today.
anticopy specification. Streams delivered to the Dolby Digital
AC-3 decoder are decoded producing the 5.1 channels of PCM
samples which are then mixed down to two channels, a Right and
a Left, via the Dolby specified mixdown function. The right and
left channels can then be output from the BCM7010 as both a
digital stream through the SPDIF interface and as analog Right
and Left channels through the on chip audio DACs. The
uncompressed Dolby Digital AC-3 stream can also be selected to
be output through the SPDIF interface and delivered to an
external Dolby Digital Receiver. PSI and SSI packets received by
the transport demultiplexer are delivered to external DRAM for
processing by the system microprocessor.
The BCM7010 is a highly-integrated, very flexible, cost-
effective solution targeted at digital set-top box applications. It is
field proven and provides legacy support for all North American
cable operations. The BCM7010 is optimized for high-volume
manufacturing. The level of integration in the BCM7010
significantly reduces the cost and complexity of manufacturing
digital set-top boxes. Broadcom has a significant portfolio of
products in front-end technology needed to complete a digital
set-top box design such as QAM, QPSK, and xDSL. These
products interface seamlessly to the BCM7010, allowing
Broadcom’s customers to take full advantage of a complete low-
cost chipset targeted at digital set-top box applications.
A transport stream delivered to the BCM7010 is demultiplexed
and checked for errors by the MPEG-2 transport decoder. Those
packets which are necessary for system operation are delivered to
the appropriate internal resource. Streams delivered to the
MPEG-2 video decoder are decoded producing a CCIR-656
digital output stream. This digital video output stream can be
mixed and blended with the OSD graphics objects. This digitally
mixed stream is delivered to an internal NTSC/PAL encoder
producing both composite video and S-Video analog waveforms.
The NTSC/PAL encoder is compliant to the Macrovision 7.01
Broadcom and the Broadcom Logo are registered trademarks of Broadcom Corporation.
Dolby® is a registered trademark of of Dolby Laboratories Licensing Corporation.
Macrovision™ is a registred trademark of Macrovision Corporation.
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© 1999 BROADCOM CORPORATION
BROADCOM CORP ORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
BCM7010.0PB5.21.99
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