Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes

Line Circuits

Our Subscriber Line Interface Circuits (SLICs) provide an economical solution for adding voice channels to broadband applications such as residential broadband gateways, Digital Subscriber Line (DSL) Integrated Access Devices (IADs), cable embedded Multimedia Terminal Adapters (eMTAs), Fiber to the X (FTTX) and Fixed Long Term Evolution (LTE) applications. These SLICs support ringing and system power management, enabling energy-efficient control of telephone lines and meeting the European Code of Conduct (CoC) specifications.

How Can Our Line Circuits Benefit Your Broadband Gateway Application? 

  • Complete, low-cost complete solutions for adding phone service to Customer Premise Equipment (CPE)
  • Robust VoicePath API for controlling, supervising, packet exchanging and testing (GR-909) of the voice subscriber line
  • Integrated line tests for impedance, open lines, shorted lines, dangerous foreign voltages and other hazards

Solutions for Residential Broadband Gateways

For DSL IADs, cable eMTAs, FTTX, and fixed 4G (LTE) and 5G applications:

  • miSLIC Series: High-Performance Wideband Line Circuit (SLIC + Codec)
  • VE950: General-Purpose Line Circuit (SLIC Only)

Solutions for Access Networks

For high-density and long-loop FXS applications:

  • VE792: Next-Generation Carrier Chip Set (NGCC)

Legacy Chipsets

  • ZL880 – Enhanced Dual Channel Wideband FXS Line Interface (SLIC + Codec)
  • VE880 - Single and Dual Channel FXS and FXO Line Interfaces (SLIC + Codec)
  • VE890 – Single Channel FXS Line Interface (SLIC + Codec)
  • VE790 - High Performance Programmable Chip Set with Line Test
  • VE580 - General Purpose Subscriber Line Interface Circuits (SLIC + Codec)