SI32193-A-FM1R

Telecom Overview

The Skyworks SI32193-A-FM1R is a single-channel Foreign Exchange Station (FXS) interface integrated circuit designed for global telephony applications. It operates from a 3.3 V supply with a maximum battery voltage of -100 V and supports a 3-wire ISI digital interface with 1.8 to 3.3 V I/O. The device provides wideband audio support, DTMF detection, and performs all BORSCHT functions within a 4 x 6 mm, 38-pin QFN package. It features an integrated DSP, monitor ADC, and test load for self-testing and metallic loop testing.

Telecom Feature Summary

• Performs all BORSCHT functions including battery feed, over-voltage protection, ringing, supervision, codec, hybrid, and test capabilities in a single package.
• Supports wideband audio with expanded frequency response and includes DTMF detection functionality specific to the Si32193 variant.
• Incorporates a programmable DC-DC controller supporting low-cost capacitive boost configurations for optimized power consumption and footprint.
• Features software-programmable parameters for ringing characteristics, two-wire AC impedance, transhybrid balance, and DC current loop feed.

Telecom Applications

• VoIP Gateways and Routers
• xDSL Integrated Access Devices (IADs)
• Analog Terminal Adapters (ATA)
• Cable eMTA systems

Telecom Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the ordering suffix 'R' indicates tape and reel packaging. Ensure compatibility with host system voltage levels and ISI interface timing requirements before integration.

Telecom Selection Notes

Select this model when DTMF detection is required alongside standard FXS functionality. Compare against the Si32192 variant if DTMF detection is unnecessary to potentially reduce complexity. Verify that the commercial temperature range (0 to 70 °C) meets application environmental specifications.

Telecom Part Context

This component belongs to the Si3219x ProSLIC family, which offers complete analog telephone interface solutions. The Si32193 variant specifically adds DTMF detection capabilities compared to the Si32192. It is part of Skyworks' portfolio of subscriber line interface concept ICs designed for cost-effective and compact telecom designs.

Telecom Replacement Considerations

The Si32192-A-FM1R serves as a functional substitute if DTMF detection is not required. For industrial temperature ranges, consider the Si32193-A-GM1R variant. Ensure pinout and register compatibility are verified when transitioning between these models.