SI32177-C-GM1

Telecom Overview

The SI32177-C-GM1 is a single-channel ProSLIC FXS interface IC from Skyworks Solutions. It operates on a 3.3 V supply with 1.8 V or 3.3 V I/O options and supports PCM, SPI, and GCI interfaces. The device integrates a tracking DC-DC controller for battery voltage generation up to -140 V. Key electrical parameters include a supply voltage range of 3.13 V to 3.47 V, an operating temperature range of -40 °C to +85 °C (G-grade), and a maximum junction temperature of 145 °C. It features wideband voice support, DTMF generation, and programmable linefeed characteristics.

Telecom Feature Summary

• Performs all BORSCHT functions for complete FXS telephony solutions
• Integrates a tracking DC-DC controller with direct MOSFET connection
• Supports wideband audio processing and on-hook transmission
• Enables software-programmable impedance, balance, and ringing parameters

Telecom Applications

• Customer Premise Equipment (CPE)
• VoIP DSL Gateways and Routers
• Wireless Local Loop (WLL) systems
• Integrated Access Devices (IAD)
• Analog Terminal Adapters (ATA)

Telecom Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel configuration. Confirm the voltage rating variant (-110 V or -140 V) matches the target application requirements. Check for RoHS compliance status and ensure the component meets the required environmental grade specifications before procurement.

Telecom Selection Notes

Select this model for applications requiring wideband voice capabilities and integrated DC-DC control. Ensure the host system supports the required digital interfaces (PCM/SPI/GCI). Verify that the power supply constraints align with the 3.3 V operation and that the thermal management design accommodates the specified junction temperature limits.

Telecom Part Context

This component belongs to the Si3217x-C family of ProSLIC products. It is designed as a pin-compatible single-channel solution for foreign exchange station interfaces. The device implements LSSGR, ITU, and ETSI specifications for global telephony compatibility.

Telecom Replacement Considerations

Direct replacements within the Si3217x-C family may be available. Consult the manufacturer's ordering guide for compatible variants with different voltage ratings or feature sets.