DOCSIS 3.0 and video front-end for interactive DVR set-top box

STiD125 is STMicroelectronics’ next generation front-end device for interactive cable gateway and set-top box applications.

STiD125 provides a solution for operators to specify a range of very high-performance DOCSIS 3.0 and DVB-C video channels.

A total of 12 demodulation channels are available, four video, four DOCSIS and four flexible (either video or DOCSIS).

A powerful dual-core CPU allows telephony and data distribution including routing/switching and firewalling. This allows STiD125 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 eight downstream channels (up to 400 Mbit/s)
    • Up to four upstream channels
  • 12 QAM demodulation channels
    • QAM video operations independent from DOCSIS
  • Digital direct interface to full band tuners
  • VoIP through ARM Cortex-A9 CPU:
    • One line VoIP 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 x Gbits Ethernet ports
  • Flexible channel allocation for active standby power consumption reduction



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DB1738 DB1738: DOCSIS 3.0 and video front-end for interactive DVR set-top box 3.0 345 KB