SI32171-B-GM1

Telecom Overview

The SI32171-B-GM1 is a single-channel ProSLIC integrated circuit designed for foreign exchange station (FXS) telephony applications. It operates from a 3.3 V supply with a voltage range of 3.13 V to 3.47 V and supports an ambient temperature range of -40 °C to +85 °C. The device provides a maximum battery voltage rating of -110 V and features DTMF detection and pulse metering capabilities. It interfaces via standard PCM or SPI digital protocols and is housed in a 42-pin QFN package measuring 5x7 mm.

Telecom Feature Summary

• Performs all BORSCHT functions for complete line interface management
• Supports wideband voice transmission and global programmability
• Integrates patented low-power ringing generation technology
• Includes built-in DC-DC controller for automatic battery voltage optimization

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 suffix GM1 against official Skyworks documentation to confirm the exact temperature grade and packaging configuration. Ensure compatibility with existing system power supplies and digital interface requirements before procurement.

Telecom Selection Notes

Select this component for designs requiring FXS functionality with DTMF detection and pulse metering in industrial temperature ranges. Confirm that the -110 V battery voltage rating aligns with target network specifications and loop resistance requirements.

Telecom Part Context

This part belongs to the Si3217x family of ProSLIC products, which are pin-compatible single-channel solutions. The series implements complete FXS telephony interfaces compliant with LSSGR, ITU, and ETSI specifications, often paired with Si3291x devices for FXO isolation.

Telecom Replacement Considerations

Direct substitutes within the same family include the Si32171-B-FM for commercial temperature grades. Other compatible options may include Si32176-B-GM1 or Si32177-B-GM1 depending on required battery voltage ratings and feature sets.

Telecom FAQ

What digital interfaces does the SI32171-B-GM1 support?

The device interfaces to standard PCM or SPI digital interfaces.

Does the SI32171-B-GM1 support FXO isolation?

No, the Si32171-B-GM1 is an FXS solution. FXO support is available in other parts of the Si3217x series, such as the Si32178.

What is the maximum loop resistance supported by the device?

The maximum loop resistance (loop plus load) is 2000 ohms when the loop current is 18 mA and the battery voltage is -48 V.