SI32176-B-FM1

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.comRev. 1.5 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 12, 2021Si3217xB/Si3291xPROSLIC® SINGLE-CHIP FXS SOLUTION WITH FXO OPTIONSi3217x FeaturesSi3291x FeaturesApplicationsDescriptionThe Si3217x is a family of pin-compatible single-channel ProSLIC products thatimplement a complete foreign exchange station (FXS) telephony interface solution inaccordance with all relevant LSSGR, ITU, and ETSI specifications. Select parts inthe series also implement Skyworks Solutions' patented capacitive isolationtechnology 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 standardPCM/SPI digital interfaces. The Si3217x integrated dc-dc controller automaticallygenerates the optimal battery voltages required for each line-state. Si3217x ICs areavailable with voltage ratings of –110 V or –135 V to support a wide range of ringingvoltages. See the Ordering Guide for the voltage rating of each Si3217x version.The Si3217x is available in a 5 x 7 mm 42-pin LGA package. The Si3291x isavailable in a 16-pin SOIC package.Functional Block DiagramPerforms all BORSCHT functionsIdeal for short to medium loopsGlobal programmabilitySimplified configuration and diagnosticsSupported by ProSLIC APILow power standby operationTracking dc-dc controllerPatented low-power ringingWideband voice supportDTMF detectionPulse metering3.3 V operationPb-free/RoHS-compliant packagingGreater than 5 kV isolationGlobal programmabilityUp to 6 dBm TX/RX levelParallel handset detectionType I and II caller ID supportIntegrated ring detectorProgrammable digital hybridCustomer Premise Equipment (CPE)VoIP DSL Gateways and RoutersWireless Local Loop (WLL)Integrated Access Devices (IAD)Analog Terminal Adapters (ATA)Small Office/Home Office (SOHO)PBXRINGTIPSPIControlInterfacePCM/GCIInterfaceDSPDTMF