SI32260-C-FM1

Telecom Overview

The Skyworks SI32260-C-FM1 is a single-chip dual ProSLIC device implementing two complete foreign exchange station (FXS) telephony interfaces. It operates from a 3.3 V supply with a voltage range of 3.13 V to 3.47 V and supports PCM, SPI, or GCI digital interfaces. The device integrates built-in DC-DC converter controllers for optimized battery voltage generation and includes a DSP for self-testing and metallic loop testing. It features wideband audio support, DTMF generation/decoding, and A-Law/µ-Law companding. Available in 47-pin QFN (6x8 mm) or 60-pin QFN (8x8 mm) packages, it provides linefeed voltage ratings of -110 V.

Telecom Feature Summary

• Performs all BORSCHT functions within a single package
• Supports ultra-low power consumption via tracking battery supplies
• Includes internal balanced or unbalanced ringing generators
• Facilitates simplified configuration through ProSLIC API support

Telecom Applications

• VoIP gateways and routers
• xDSL IADs
• Analog Terminal Adapters (ATA)
• Wireless Fixed Terminals (WFT)

Telecom Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout compatibility and package type. Ensure that any third-party datasheets align with the primary Skyworks specifications before finalizing procurement decisions.

Telecom Selection Notes

Select this component for designs requiring dual FXS channels in a compact footprint. Consider the 6x8 mm package for space-constrained applications and the 8x8 mm variant if GCI interface support is required alongside standard PCM/SPI options.

Telecom Part Context

This part belongs to the Si32260/1 Dual ProSLIC family, which consolidates two full telephony interfaces into one integrated circuit. The series is designed to replace discrete solutions by combining CODEC, SLIC, and DC-DC control functionalities on a single die.

Telecom Replacement Considerations

The Si32261-C-FM1 serves as a direct functional substitute within the same family, offering identical architecture but with an increased linefeed voltage rating of -140 V compared to the -110 V rating of the Si32260.