BCM7412 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – AVC/VC-1/MPEG HIGH-DEFINITION DECODER

OVERVIEW
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The BCM7412 Decoder
The BCM7412 introduces the advantages of the H.264 video compression
algorithm to today’s advanced consumer and broadcast applications. The BCM7412
is an AVC/VC-1/MPEG-2 decoder chip capable of full HD real-time decoding.
Broadcom’s H.264 Compression Advantage™ architecture provides three times
the compression power of MPEG-2. Systems incorporating the BCM7412 have
superior image quality, improved system performance, and larger storage capacity
with the reduced bit rates of H.264—also known as MPEG-4 Advanced Video
Coding (AVC). The BCM7412 fully supports the MPEG-2 standard, so that
compatibility with existing media can be maintained.
The BCM7412 supports both HD and SD formats (MPEG-2, H.264 or VC-1) in
real time.
Transport/Program Stream Demultiplexer
The BCM7412 accepts transport or program streams depending on the preferred
application, and parses the incoming video, audio, and private data for decoding.
The BCM7412 monitors PCR information in the transport stream to adjust the
frequency of an external VCXO oscillator.
Digital Video Output Port
The BCM7412 provides a configurable digital video output port for a glueless
interface to the BCM7038 or to a variety of video DACs. The output may be
configured for BT.656 and HD-DVI.
Still Image Decoder (SID)
The H.264 Advantage
The H.264 coding standard incorporates innovations and techniques developed
over decades of worldwide research into video compression. The algorithm
produces results far superior to the preceding MPEG standards. H.264 derives
much of its performance gain from complex motion estimation techniques,
integration of an in-loop deblocking filter, and brand-new spatial prediction
operations.
H.264 Support
• Complies with the ISO/IEC 14496-10 specification
• Decoder support for AVC High Profile streams up to level 4.1 with a 40 Mbps
maximum encoded bit rate restriction
• I, B, and P slices
• CABAC and CAVLC entropy decoding
• Field/frame and picture adaptive decoding
• Macroblock adaptive field/frame decoding
• All intrablock and interblock sizes
• Resolutions supported: QCIF up to 1920 × 1088
The SID still-image decode accelerator operates autonomously, with its own
general-purpose RISC processor that handles image headers, depacketization, and
input/output DMA. It supports JPEG, PNG, MNG, GIF, RLE formats
System Control/Status Interface
The BCM7412 is intended for use as a peripheral system and requires a
controlling agent to configure and monitor its operation. The following interfaces
are supported:
• PCI 32-bit interface
• Generic 16-bit host interface
• SPI serial and GPIO interface
BCM7412 Specifications
Parameter
Value
Logic supply
1.2
SDRAM I/O supply
2.6
Unit/Description
V
V
MPEG-2 Support
I/O supply
3.3
V
The BCM7412 complies with the ISO/IEC 13818-2 specification and supports
Maximum power dissipation 2.5
W
Main Profile up to high level at 125 Mbps.
Operating temperature
0 to 70
°C
VC-1 Support
The BCM7412 supports Advanced Profile VC-1 streams up to 40 Mbps, as well
as Simple and Main, as defined in the proposed SMPTE specification.
Storage temperature
Package Information
Package type
–30 to +125
336-pin
°C
Ball grid array
Package size
27 × 27
mm
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© 2006 by BROADCOM CORPORATION. All rights reserved.
7412-PB00-R
11/09/06
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