SI32176-B-GM1R

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1. Describe

The SI32176-B-GM1R devices are pin-compatible, single-channel ProSLIC products implementing complete Foreign Exchange Station (FXS) telephone interface solutions according to all relevant LSSGR, ITU, and ETSI specifications. The SI32176-B-GM1R ProSLIC IC operates from a 3.3 V supply and interfaces to a standard PCM/SPI digital interface via 3.3 V or 1.8 V I/O. The SI32176-B-GM1R integrated DC-DC controller automatically generates the optimal battery voltage required for each line condition. The SI32176-B-GM1R ICs are rated at –110 V or –140 V to support various ringing voltages. The SI32176-B-GM1R devices are available in a 5x7 mm 42-pin QFN package.

2. Features

    1. Complete FXS solution in 5 x 7 mm

    2. Performs all BORSCHT functions

    3. Ideal for short to medium loops

    4. Global programmability

    5. Internal balanced or unbalanced ringing

    6. Patented low power ringing

    7. Simplified configuration and diagnostics

    8. Supported by ProSLIC API

    9. Ultra low power consumption

  10. Integrated tracking dc-dc controller with direct connection to MOSFET

  11. Wideband voice support (Si32174/6/7)

  12. On-hook transmission

  13. Loop or ground start operation

  14. Smooth polarity reversal

  15. PCM and SPI bus digital interfaces with programmable interrupts

  16. A-Law/µ-Law companding, linear PCM

  17. Software-programmable parameters:

        - Ringing frequency, amplitude, cadence, and waveshape

        - Two-wire ac impedance

        - Transhybrid balance

        - DC current loop feed (10-45 mA)

        - Loop closure and ring trip thresholds

        - Ground key detect threshold

  18. GCI/IOM-2 mode support

  19. DTMF generation

  20. DTMF detection (Si32170/1/4)

  21. Pulse metering (Si32170/1)

  22. 3.3 V operation

  23. Support for 1.8 V I/O

  24. Maximum battery up to –140 V

  25. Pb-free/RoHS-compliant packaging

3. Applications

    1. Customer Premise Equipment (CPE)

    2. VoIP DSL Gateways and Routers

    3. Wireless Local Loop (WLL)

    4. Integrated Access Devices (IAD)

    5. Analog Terminal Adapters (ATA)

    6. Small Office/Home Office PBX