BCM3510 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – HDTV/CATV RECEIVER

BCM3510 OVERVIEW
Analog IF
Input
10
A/D
Adjacent Channel
and Interpolation
Filters
DDFS
Adjacent Channel
and Interpolation
Filters
Nyquist
α = .11 - .18
Nyquist
α = .11 - .18
NTSC
Filter
NTSC
Filter
64-tap
FFE
and
432-tap
DFE
Forward
Error
Correction
Decoder:
Annex A,B,C,D
S_DATA
S_VALID
S_CLK
S_SYNC
P_DATA[7:0]
Tuner AGC
Tuner
Interface
Tuner Control
Acquisition/Tracking Loops
and Clock Generation
Acquisition
Microcontroller
JTAG
Interface
Deinterleaver
RAM
MBus/SPI
Interface
MICRO[3:0]
JTAG[3:0]
The Broadcom BCM3510 is a VSB/QAM digital receiver,
compatible with both North American digital cable television
and digital terrestrial broadcast television standards. It is capable
of receiving all standard-definition and high-definition digital
television formats (SDTV/HDTV).
This second-generation Broadcom VSB receiver implements
significant performance and feature improvements. Performance
is enhanced in several key areas, including equalizer, gain
control, and adjacent and co-channel rejection. These
improvements were developed using more than one year of field
trial and deployment of the BCM3500. Feature improvements
include an upgraded embedded microcontroller to handle
acquisition, reacquisition and monitoring tasks while offering
users a simplified, high-level application programmer interface.
The BCM3510 accepts an analog signal centered at the standard
television IF frequencies, amplifies and digitizes this signal with
an integrated programmable gain amplifier and 10-bit A/D
converter, then demodulates and filters the signal with a
combined 64/256-QAM and 8-VSB demodulator. The integrated
interpolation filters enable variable symbol rates with fixed A/D
sample rate. A second stage of filters is provided for increased
adjacent channel rejection performance. The 496-tap equalizer
and adaptive NTSC co-channel rejection filter remove
propagation effects and interference. The data is error-corrected
by the integrated trellis and Reed-Solomon decoders supporting
both the ATSC A/53 and ITU J.83 coding formats. The final
received data stream is delivered in either parallel or serial
MPEG-2 transport format with a clock generated by an on-chip
PLL. The output interface is designed to operate with
Broadcom's HDTV video and graphics subsystem device, the
BCM7020. All clock, carrier, and gain acquisition and tracking
loops are integrated on-chip, as are the necessary phase-locked
loops, referenced to a single external crystal.
The BCM3510 also contains an integrated microcontroller to
greatly simplify the system software development task and
increase overall performance through extensive monitoring and
control functions. The chip contains both on-chip RAM and
ROM for design flexibility and low cost implementations.
The BCM3510 implements all of the receiver functionality for
both VSB and QAM signals at no extra cost, creating a single
system solution for digital terrestrial and cable applications. This
highly integrated device includes an A/D converter and on-chip
digital PLL to maximize system performance while eliminating
the need for expensive external components. An innovative
Broadcom NTSC co-channel rejection system is designed to
minimize signal loss experienced by traditional comb filter
designs, ensuring superior performance under the harshest
channel conditions. The BCM3510 contains a large equalizer to
compensate for the longest terrestrial multipath of up to 40 msec.
All of these advanced features are combined to meet or exceed
all the Advanced Television Testing Center Grand Alliance
System test results.
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Broadcom Corporation and/or its subsidiaries in the United States and certain other countries.
All other trademarks are the property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2003 by BROADCOM CORPORATION. All rights reserved.
3510-PB04-R-06.13.03
Phone: [phone]
FAX: [phone]
Email: [e-mail]
Web: www.broadcom.com