O V ERVI EW

®

Phone: 949-450-8700

Fax: 949-450-8710

E-mail: info@broadcom.com

Web: www.broadcom.com

BROADCOM CORPORATION

16215 Alton Parkway, P.O. Box 57013

Irvine, California 92619-7013

© 2004 by BROADCOM CORPORATION. All rights reserved.

3510-PB05-R

06/30/04

or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the

property of their respective owners.

The Broadcom BCM3510 is a VSB/QAM digital receiver, compatible

with both North American digital cable television and digital terrestrial

broadcast television standards. The BCM3510 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. The BCM3510 then amplifies and digitizes

this signal with an integrated programmable gain amplifier and 10-bit

A/D converter, and 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 ms. All of

these advanced features are combined to meet or exceed all the

Advanced Television Testing Center Grand Alliance System test results.

MICRO[3:0]

JTAG[3:0]

S_CLK

S_DATA

S_SYNC

MBus/SPI

Interface

Deinterleaver

RAM

Forward

Error

Correction

Decoder:

Annex A,B,C,D

A/D

Tuner AGC

Analog IF

Input

10

S_VALID

P_DATA[7:0]

JTAG

Interface

DDFS

NTSC

Filter

Tuner

Interface

Tuner Control

Acquisition

Microcontroller

Adjacent Channel

and Interpolation

Filters

Adjacent Channel

and Interpolation

Filters

64-tap

FFE

and

432-tap

DFE

Nyquist

α = .11 - .18

Nyquist

α = .11 - .18

NTSC

Filter

Acquisition/Tracking Loops

and Clock Generation