SI32170-C-FM1R

Telecom Overview

The SI32170-C-FM1R 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. The device supports PCM, SPI, and GCI interfaces. It features an integrated DC-DC controller for battery voltage generation up to -140 V. Key specifications include a supply voltage range of 3.13 V to 3.47 V, operating temperatures of 0°C to 70°C (F-grade) or -40°C to 85°C (G-grade), and a 42-pin QFN package.

Telecom Feature Summary

• Performs all BORSCHT functions for complete FXS telephony solutions
• Supports wideband voice, DTMF detection, and pulse metering
• Includes internal balanced or unbalanced ringing with low power consumption
• Features software-programmable parameters for global configurability

Telecom Applications

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

Telecom Procurement Notes

Verify the specific grade suffix (F or G) required for your temperature range before ordering. Confirm the exact part number against the manufacturer's current ordering guide as product lines may undergo revisions. Ensure compatibility with your system's digital interface requirements, such as PCM or SPI protocols.

Telecom Selection Notes

Select this component for applications requiring a single-channel FXS solution with integrated line feed and codec functionality. Consider the F-grade for commercial temperature ranges and G-grade for industrial environments. Verify that the maximum battery voltage rating aligns with your loop length and ringing voltage requirements.

Telecom Part Context

This device belongs to the Si3217x-C family of ProSLIC products. It is pin-compatible with other variants in the series, allowing for design flexibility across different channel counts and feature sets within the same package footprint. The C-series represents a specific generation of these telecom interface ICs.

Telecom Replacement Considerations

Check for direct pin-compatible replacements within the Si3217x-C family, such as the SI32171-C-FM1R, which offers similar functionality but may differ in specific features like DTMF detection or pulse metering support. Always verify electrical characteristics and software compatibility when substituting.