BCM3040 - Universal DOCSIS® 2.0-Based Downstream Modulator

Universal DOCSIS® 2.0-Based Downstream Modulator

The BCM3040 QAMLink® universal modulator is a highly integrated solution that decreases the board space and cost of modulators in DOCSIS 2.0-based CMTS applications. The BCM3040 features an advanced downstream QAM modulator that includes an extended ITU-T J.83 Annex A/B/C FEC encoder, an all-digital QAM modulator supporting up to 1024 QAM, and an integrated 10-bit D/A converter with power control. Additionally, the BCM3040 includes a second modulator that can be used for out-of-band signaling or CPE power control.

The BCM3040 combined with the BCM3140 QAMLink Burst Receiver and BCM3214 QAMLink CMTS MAC provides a complete solution for advanced DOCSIS 2.0-based cable headend equipment.

  • Integrated DOCSIS/Euro-DOCSIS 2.0-based downstream modulator
  • Supports symbol rates up to 10 Mbaud
  • Integrated TurboQAM™ enables downstream line rates up to 100 Mbps
  • Supports modulation formats of 4, 16, 31, 64, 128, 256, 512 and 1024 QAM