QAMLINK ® UNIVERSAL MODULATOR

The BCM3033 QAMLink Universal Modulator is a highly-integrated solution that significantly decreases the board space and cost of modulators in digital cable TV headends, digital cable modem headends, digital microwave radio, SMATV and MMDS applications. Integrated features in the BCM3033 include an integrated ITU-T J.83 Annex A (DVB/DAVIC/ IEEE802.14), Annex B (DigiCipher® II/SCTE/DOCSIS/EuroDOCSIS/ IEEE802.14), and Annex C (Japan) FEC encoder, a QAM modulator and a D/A converter. The encoder provides coding gain and burst error correction and can be programmed to comply with the ITU-T J.83 Annex A, Annex B and Annex C coding standards.

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