DOCSIS 3.0 and video front-end for gateway set-top box

STiD127 is STMicroelectronics’ next generation front-end device for interactive cable gateway and set-top box applications.

STiD127 provides a solution for operators to specify a range of very high-performance DOCSIS 3.0 and DVB-C video channels.

A total of 16 demodulation channels can be used. Eight for video, eight for DOCSIS.

A powerful dual-core CPU allows telephony and data distribution including routing/switching and firewalling. This allows the STiD127 to use the associated set-top box as a home, triple-play gateway (combined VoIP, video and broadband).

Key Features

  • Dual CPU architecture - one for DOCSIS® and one for host including eRouting and VoIP management
  • ARM Cortex-A9 770 MHz, dual-core CPU with NEON™ SIMD co-processor
  • DOCSIS 3.0 data cable modem:
    • Up to 8 downstream channels (up to 400 Mbit/s)
    • Up to 4 upstream channels
  • 8 video QAM demodulation channels
    • QAM video operations independent from DOCSIS
  • Digital direct interface to full band tuners
  • VoIP through ARM Cortex-A9 CPU:
    • 1 VoIP line with PacketCable™ 1.5 or 2.0 reference software
  • 2 x PCI-e interfaces for WiFi connectivity
  • DDR2/3, 8/16-bit LMI interface
  • Serial NOR, SPI interface
  • 3 Gbit Ethernet ports
  • Flexible channel allocation for active standby power consumption reduction



Description Version Size
DB1737 DB1737: DOCSIS 3.0 and video front-end for gateway set-top box 2.0 285 KB