BCM3033 查看數據表（PDF） - Broadcom Corporation
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BCM3033 Datasheet PDF : 2 Pages
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BCM3033
PRODUCT
®
Brief
BCM3033 QAMLINK® UNIVERSAL MODULATOR
BCM3033 FEATURES
• BCM3033 is a universal headend QAM modulator
• Integrated QAMLink modulator
• Supports 4, 16, 32, 64, 128 and 256-QAM
• Variable data rates up to 7 megabaud
• Linear phase digital square-root Nyquist transmit filters
• >60-dB stop band attenuation in digital filters
• Perfect quadrature amplitude and phase balance
• X/sinX filter for DAC distortion compensation
• Integrated ITU-T J.83/Annex A
(DVB/DAVIC/IEEE802.14), Annex B (DigiCipher® II/
SCTE/DOCSIS™/EuroDOCSIS/IEEE 802.14), and
Annex C (Japan) FEC Encoding
• Integrated 10-bit digital-to-analog converter
• Compatible with Broadcom’s QAMLink receivers
• BSC or SPI-compatible microcontroller interface
• JTAG test interface
• 120-pin PQFP package
SUMMARY OF BENEFITS
• A high-performance, integrated solution for
modulators in digital cable TV headend, digital cable
modem headend, digital microwave radio, SMATV
and MMDS applications
• An integrated solution that reduces board space and
manufacturing costs
• A flexible solution that supports the FEC encoding
standards for North America, Europe, and Asia
• A universal modulator solution that supports all data
rates worldwide
Cable Modem Termination System
44 MHz IF
PA
5–65 MHz
VGA
RF
Tuner
LPF
BCM3033
QAM
Modulator
CLOCK
DATA
Pentium®
PC
SAW
BCM3210
MAC
PCI
Interface
PCI
Backbone
CLOCK
DATA
LPF
BCM3137
Burst Demod
1–8 Channels
100BASE-T
Ethernet
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