Si3228x Data Short: ProSLIC® Single-Chip Dual FXS Solution The S3228x Dual ProSLIC® devices, in a single package, implement two complete foreign exchange station (FXS) telephony interfaces. The S3228x devices operate from a 3.3 V supply and have standard PCM/SPI or 3-wire ISI digital interfaces. A pair of built-in dc-dc converter controllers can be used to automatically generate the optimal battery voltage required for each line-state, optimizing efficiency and minimizing heat generation. The S3228x devices are designed to operate with capacitive boost tracking battery supply for lower power, cost, and footprint vs. other tracking or shared battery supplies in the industry. Self-testing and metallic loop testing (MLT) is facilitated by the built-in DSP, monitor ADC, and test load. The devices are available with wideband audio for better than PSTN voice quality, DTMF detection, and Smart Ringing. Smart Ringing reduces the peak current with 2-channel ringing for lower-cost ac-dc adapters. The S3228x devices are available in a 7 x 7 mm 48-pin QFN or 8 x 8 mm 56-pin QFN package. KEY FEATURES • Two complete FXS channels in a single 8x8 mm package • Performs all BORSCHT functions • Ideal for short- or medium-loop applications • Ultra-low power consumption • Patented low-power ringing • Patent-pending Smart Ringing • Reduces peak current with 2-channel ringing • Adaptive ringing • Simplified configuration and diagnostics • Supported by ProSLIC API Applications: • VoIP gateways and routers • xDSL IADs • Optical Network Terminals/Units (ONT/U) • Analog Terminal Adapters (ATA) • Cable eMTA • Wireless Fixed Terminals (WFT) • Wireless Local Loop (WLL) • WiMAX CPE • Private Branch Exchange (PBX) • VoIP MDU gateways • Audio diagnostics with loopback • Integrated test load • Wideband voice support • On-hook transmission • Loop or ground start operation • Smooth polarity reversal • Programmable interrupts • Software-programmable parameters: • Ringing frequency, amplitude, cadence, and waveshape • Two-wire ac impedance • Transhybrid balance • DC current loop feed (10–45 mA) PCLK / PSCLK PLL Caller ID Ringing Ringing Generator Generator DSP SLIC ADC ADC Linefeed Control DAC DAC Linefeed Monitor CODEC SLIC Line Diagnostics Diagnostics Line ADC ADC Linefeed Control DC-DC Controller DAC DAC Linefeed Monitor • Ground key detect threshold Linefeed Host Interface 3-wire ISI or PCM/SPI Interface CODEC TIP Channel A RING • Flexible integrated tracking DC-DC controller supporting patent-pending lowcost capacitive boost configuration • DTMF Generation • DTMF Detection (Si32281/3/5/7) Linefeed DTMF DTMFand & Tone Gen Tone Gen Programmable Programmable ACACImpedance Impedance andHybrid Hybrid and • Loop closure and ring trip thresholds TIP Channel B RING Si3228x • 3-wire Integrated Serial Interface (ISI) or PCM interface • A-Law/µ-Law companding, linear PCM • Pulse metering • 3.3 V operation • Pb-free/RoHS-compliant packaging Functional Block Diagram silabs.com | Smart. Connected. Energy-friendly. This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Preliminary Rev. 0.2 Si3228x Data Short: ProSLIC® Single-Chip Dual FXS Solution Table 1.1. S3228x Ordering Guide P/N Description Package Type Max VBAT Temperature Si32280-A-FM Wideband Dual FXS, ISI interface QFN482 –106 V 0 to 70 °C Si32280-A-GM Wideband Dual FXS, ISI interface QFN482 –106 V –40 to 85 °C Si32281-A-FM Wideband Dual FXS, ISI interface, DTMF detection QFN482 –106 V 0 to 70 °C Si32281-A-GM Wideband Dual FXS, ISI interface, DTMF detection QFN482 –106 V –40 to 85 °C Si32282-A-FM Wideband Dual FXS, PCM interface, daisy-chain mode QFN562 –106 V 0 to 70 °C Si32282-A-GM Wideband Dual FXS, PCM interface, daisy-chain mode QFN562 –106 V –40 to 85 °C Si32283-A-FM Wideband Dual FXS, PCM interface, DTMF detection, daisy-chain mode QFN562 –106 V 0 to 70 °C Si32283-A-GM Wideband Dual FXS, PCM interface, DTMF detection, daisy-chain mode QFN562 –106 V –40 to 85 °C Si32284-A-FM Wideband Dual FXS, ISI interface, Smart Ringing QFN482 –106 V 0 to 70 °C Si32284-A-GM Wideband Dual FXS, ISI interface, Smart Ringing QFN482 –106 V –40 to 85 °C Si32285-A-FM Wideband Dual FXS, ISI interface, DTMF detection, Smart Ringing QFN482 –106 V 0 to 70 °C Si32285-A-GM Wideband Dual FXS, ISI interface, DTMF detection, Smart Ringing QFN482 –106 V –40 to 85 °C Si32286-A-FM Wideband Dual FXS, PCM interface, daisy-chain mode, Smart Ringing QFN562 –106 V 0 to 70 °C Si32286-A-GM Wideband Dual FXS, PCM interface, daisy-chain mode, Smart Ringing QFN562 –106 V –40 to 85 °C Si32287-A-FM Wideband Dual FXS, PCM interface, DTMF detection, daisy-chain mode, Smart Ringing QFN562 –106 V 0 to 70 °C Si32287-A-GM Wideband Dual FXS, PCM interface, DTMF detection, daisy-chain mode, Smart Ringing QFN562 –106 V –40 to 85 °C Note: 1. Adding the suffix "R" to the part number (e.g., Si32282-C-FMR) denotes tape and reel. 2. QFN - Quad-Flat No-leads silabs.com | Smart. Connected. Energy-friendly. Preliminary Rev. 0.2 | 1 Smart. Connected. Energy-Friendly Products Quality Support and Community www.silabs.com/products www.silabs.com/quality community.silabs.com Disclaimer Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. 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