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BCM94500
PRODUCT
Brief
OF BENEFITS
ADVANCED MODULATION SATELLITE RECEIVER EVALUATION SYSTEM
BCM94500 FEATURES SUMMARY Evaluation system BCM3440 direct * conversion CMOS based ontuner and BCM4500 satellite Demonstrates the high performance of * advanced modulation satellite receiver, the BCM4500 which supports
* * * * * * * * * Schematic drawings and Gerber files
* Bill of materials (BOM) * Data sheet * Software source code * User manual
advanced modulation satellite receiver Supports full satellite input range (950-2150 MHz) Standard MPEG-2 output in DIRECTV(R) or DVB format Standard DVB-SPI MPEG output interface: 25-pin D connector with LVDS line drivers Interfaces to BCM97031 HDTV decoder/graphics evaluation system I2C bus interface to PC parallel port for system control Internal BERT and external BERT interface DiSEqCTM (Digital Satellite Equipment Control) 2.0 2-way interface Complete reference design includes
* * * * * * * *
Compatible with * operating systemsWindows
(R)
95, 98, 2000 or NT host PC
QPSK, 8PSK and 16 QAM with a turbo code FEC. Supports legacy modes based on DIRECTV(R) and DVB-S QPSK standards. High-performance direct conversion BCM3440 satellite tuner exceeds performance of typical singlechip satellite tuners for increased system performance. Highly integrated BCM3440 and BCM4500 devices enable low-cost implementation with minimal external components. Host software uses the BCM4500 high-level application program interface (API) implemented in the on-chip microcontroller contained in the BCM4500. BCM3440 also controlled by the host through the BCM4500 API. Highly integrated Windows(R) software enables evaluation of all advanced modulation/turbo modes, as well as legacy DVB and DIRECTV modes. Easy interface to PC via parallel port and I2C connector on BCM94500. Interface to BCM4500 Integrated DiSEqCTM 2.0 for two-way communication with external hardware.
BCM94500 Advanced Modulation Satellite Receiver Evaluation System
BCM94500
OVERVIEW
BCM4500 Block Diagram
RA_I
A/D
7 Phase/ Frequency Recovery 7 Variable Rate Demod
Nyquist
= 0.20, 0.35 12-tap FFE
Block Header Processor
Iterative Decoder
Outer RS Decoder t=10
RA_Q
A/D
Nyquist
= 0.20, 0.35 Viterbi Decoder Sync & Deinterleaver RS Decoder
M U X
DATA[7:0] CLK VALID SYNC ERR
AGC_CTRL
Acquisition/Tracking Loops and Clock Generation
Acquisition Microcontroller
MBus/SPI Interface
MICRO[4:0]
DISEQC
DiSEqC 2.0
The BCM94500 advanced modulation satellite receiver evaluation system is intended for use by satellite systems engineers for the evaluation of the high performance offered by the BCM4500 advanced modulation satellite receiver with turbo code FEC. It is also intended for use by hardware designers and software developers to reduce product design and development time. This evaluation platform provides the ideal environment for systems engineers to explore the emerging technology enabled by turbo code FECs and the unparalleled performance offered by the BCM4500. The simplified user interface gives engineers easy access to various system parameters, allowing them to select optimal settings for the BCM4500 to match the link budget requirements. Hardware engineers and software developers can use the BCM94500 as a baseline for the final product architecture and also use it as a test and measurement device to verify their final product performance. The BCM94500 supports QPSK, 8PSK and 16 QAM operation with turbo code FEC over a range of coding and symbol rates. The system also supports DVB-S and DIRECTV(R) modes for legacy system compatibility testing. The BCM94500 contains the BCM3440 direct conversion CMOS satellite tuner, which supports the full 950-2150 MHz operating range. Baseband IQ outputs are connected directly to the BCM4500 receiver. All tuner AGC loops are controlled by the BCM4500. The BCM4500 process the I/Q baseband signal
through a variable rate advanced modulation receiver and can use either the turbo code FEC or legacy DVB-S/ DIRECTV FEC. The MPEG-2, DIRECTV- or DVB-compliant output is available on a 25-pin connector, driven by line drivers for connection to external test equipment or for interfacing to the BCM97031 HDTV video/graphics subsystem for decoding and display. Additional on-board components are provided as an interface between the BCM4500 DiSEqCTM controller and external devices, such as multiple switches. The BCM94500 is delivered with Windows(R) software for easy installation and testing. The host software communicates with the BCM94500 via I2C protocol via the PC parallel port. The host software contains several screens for chip configuration, constellation monitoring, and performance monitoring including SNR, block error calculations and other FEC performance parameters. Testing is simplified by having the option to use other external BERTs or the BCM4500 on-chip BERT. A detailed user manual is provided that describes the host software interface as well as the operation of the BCM4500 API for embedded host software development. All acquisition scripts and monitoring calculations are performed in the BCM4500 internal microcontroller and are transparent to the host. The BCM94500 package is delivered with the user manual, schematic drawings, and a bill of materials. PCB Gerber files are also available.
Broadcom(R), the pulse logo(R) and Connecting EverythingTM are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. DIRECTV(R) is a registered trademark of DIRECTV, INC., a unit of Hughes Electronics Corporation. Windows(R) is a trademark of Microsoft Corporation. DiSEqCTM is a trademark of EUTELSAT. All other trademarks are the property of their respective owners.
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2002 by BROADCOM CORPORATION. All rights reserved. 94500-PB02-R-4.30.02
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com

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