BCM3118B Datasheet, PDF (1/2 Pages) Broadcom Corporation. – QAMLINK DVB/DAVIC RECEIVER

BCM3118B
PRODUCT
Brief
®
BCM3118B QAMLINK^® DVB/DAVIC RECEIVER
BCM3118B FEATURES
• Downstream QAM receiver for international
applications
• Integrated QAMLink receiver with Forward Error
Correction (FEC)
• 1-7 MBaud variable symbol rate receiver
• Supports variable channelization
• Supports 4, 16, 32, 64, 128 and 256-QAM
• Digital demodulator, Nyquist filters, tracking loops,
and 20-tap adaptive decision feedback equalizer
• Digital derotator for wideband carrier phase tracking
• DVB/DAVIC-compliant FEC decoder
• Reed-Solomon (N,K) = 204,188: t=8
• Convolutional detinterleaver, I=1-12 with internal
RAM, I=204 with external RAM
• ^{I2C or SPI-compatible microcontroller interface}
• ^{Integrated 10-bit analog-to-digital converter}
• ^{On-chip generation of all clock and control signals}
• ^{JTAG test interface}
• ^{100-pin PQFP Package}
SUMMARY OF BENEFITS
• Fully integrated solution enables less-complex,
low-cost cable modems and cable-TV set-top boxes
• ^{Significantly increases channel capacity}
• ^{Variable data rates enable systems to adapt to}
channels encoded at different data rates
• Integrated A/D converter reduces system
manufacturing costs and complexity
• A universal chip solution that supports DVB, DAVIC,
ITU-T J.83/Annex A and Annex C, IEEE 802.14-based
systems
• Digital adaptive equalizers ensure robust performance
in the presence of multipath reflections
Interactive Set-Top Box with DOCSIS and Watch and Record Dual Video Channels
Video 1
DOCSIS/EuroDOCSIS 1.1/1.0
Out-of-Band
BCM3250
Advanced
Single-Chip
Set-Top Box
Front End
Video 1
PCI
BCM7030
High Definition
Video/Graphics
Subsystem
Video Out
Video 2
BCM3118B
Video 2
CPU
Audio Out