SI32260-C-GM2R

Telecom Overview

The Skyworks SI32260-C-GM2R is a single-chip dual ProSLIC device implementing two complete FXS telephony interfaces. It operates from a 3.3 V supply and supports PCM, SPI, or GCI digital bus interfaces. The Si32260 variant features a linefeed voltage rating of -110 V. It integrates built-in dc-dc converter controllers for optimized battery voltage generation. The device performs all BORSCHT functions and includes wideband audio support with A-Law/µ-Law companding. It is available in a 47-pin QFN (6x8 mm) package.

Telecom Feature Summary

• Performs all BORSCHT functions for subscriber line interface
• Integrates DSP-based self-testing and metallic loop testing capabilities
• Supports software-programmable ringing parameters and AC impedance synthesis
• Includes integrated dc-dc controllers with direct connection to MOSFET

Telecom Applications

• VoIP gateways and routers
• Optical Network Terminals/Units (ONT/U)
• Analog Terminal Adapters (ATA)
• Private Branch Exchange (PBX)

Telecom Procurement Notes

Verify the specific suffix GM2R against official ordering guides to confirm package type and reel specifications. Confirm that the C-grade temperature range matches the target application environment. Ensure compatibility with the required digital interface mode, as the device supports multiple bus protocols.

Telecom Selection Notes

Select this model over the Si32261 if the application requires a lower maximum battery voltage rating of -110 V instead of -140 V. Verify that the 6x8 mm 47-pin QFN package fits the PCB layout constraints. Consider the thermal resistance characteristics when designing heat dissipation for high-power off-hook states.

Telecom Part Context

This component belongs to the Si32260/1 Dual ProSLIC family. It provides a consolidated solution for analog telephone interfaces by integrating SLIC and CODEC functionality into one IC. The series is designed to meet LSSGR, ITU, and ETSI specifications for customer premises equipment.

Telecom Replacement Considerations

Si32261-C-GM2R offers identical functionality but with a higher -140 V linefeed rating.