Silicon Labs SI32174-C-FM1R

用户线路接口概念（SLIC），CODECPCM，SPI3.13V ~ 3.47V

Overview

The Si3217x is a family of pin-compatible single-channel ProSLIC products that implement a complete foreign exchange station (FXS) telephony interface solution in accordance with all relevant LSSGR, ITU and ETSI specifications. Select parts in the series also implement Silicon Laboratories' patented capacitive isolation technology to enable seamless connection to Si3291x series foreign exchange office (FXO) line-side devices. The Si3217x ProSLIC ICs operate from a 3.3 V supply and interface to standard PCM/SPI digital interfaces. The Si3217x integrated dc-dc controller automatically generates the optimal battery voltages required for each line-state. Si3217x ICs are available with voltage ratings of –110 V or –135 V to support a wide range of ringing voltages. The Si3217x is available in a 5x7 mm 42-pin QFN package. The Si3291x is available in a 16-pin SOIC package.

- Small Office/Home Office (SOHO) PBX

Features

ProSLIC® Series
Available in the 42-VFQFN Exposed Pad package

Surface Mount Mounting Type

Applications

There are a lot of Silicon Labs
SI32174-C-FM1R Telecom applications.

• Switches
• LAN Routers
• Digital Modems
• SONET/SDH terminal
• Add/Drop multiplexers (ADMs)
• T1/E1/J1 add/drop multiplexers (MUX)
• Channel Service Units (CSUs): T1/E1/J1
• Fractional T1/E1/J1
• BITS Timing
• Digital Access Cross-connect System (DACs)