SI32260-C-GM

Telecom Overview

The SI32260-C-GM is a single-chip dual ProSLIC device implementing two complete foreign exchange station (FXS) telephony interfaces. It operates from a 3.3 V supply and supports PCM/SPI or GCI digital bus interfaces. The device integrates built-in DC-DC converter controllers to generate optimal battery voltage, supporting tracking or shared supply configurations. It features linefeed voltage ratings of –110 V, wideband audio support, and programmable AC impedance. Available in a 47-pin QFN package measuring 6 x 8 mm, it performs all BORSCHT functions with integrated DSP for diagnostics.

Telecom Feature Summary

• Performs all BORSCHT functions within a single package
• Integrated DC-DC controller with direct connection to MOSFET
• Supports software-programmable ringing frequency, amplitude, cadence, and waveshape
• Includes built-in DSP for self-testing and metallic loop testing

Telecom Applications

• VoIP gateways and routers
• xDSL IADs
• Analog Terminal Adapters (ATA)
• Private Branch Exchange (PBX)

Telecom Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and grade. Confirm that the component matches the required environmental operating temperature range for the intended application. Ensure compatibility with the host system's power supply specifications before procurement.

Telecom Selection Notes

Select this model when two FXS channels are required in a compact footprint. The 6 x 8 mm package is suitable for space-constrained designs. Verify that the host processor supports the required SPI, PCM, or GCI interface protocols. Ensure the design accommodates the necessary external components for the integrated DC-DC converters if tracking supplies are utilized.

Telecom Part Context

This component belongs to the Si32260/1 Dual ProSLIC family. It provides dual-channel FXS functionality in a single integrated circuit. The device is designed to replace discrete solutions by combining CODEC, SLIC, and control logic into one package, simplifying board layout and reducing overall system component count.

Telecom Replacement Considerations

Public confirmed substitute part numbers: SI32261-C-GM.