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| Winbond W681388 Single Programmable Extended CODEC/SLIC W681388 implements a single channel FXS telephone line interface optimized for short loop applications. It integrates SLIC (Subscriber Line Interface Circuit) functionality with a programmable CODEC and a DC-to-DC controller. The SLIC supports internal ringing up to 90 VPK (5 REN at 4 kft), ideal for customer premise equipment (CPE). The CODEC can be configured for -law/A-law or 16-bit linear PCM encoding and supports a comprehensive set of signaling capabilities required to supervise and control both telephone lines. These include tone generation (including ring tones), DTMF generation and detection as well as FSK and metering pulse generation. An on-chip pulse width modulation (PWM) driver allows the control of DC-to-DC conversion for the line. Programmable impedance and transhybrid balancing allow for worldwide deployment. The FEATURES Performs complete BORSCHT functions for a single channel with a single device Internal balanced ringing up to 90VPK (5REN up to 4kft) Integrated Power Management Integrated DC-DC controller regulates battery voltage to minimize power dissipation in all operating modes Programmable linefeed characteristics Ringing frequency, amplitude, cadence Trapezoidal and Sinusoidal waveforms Two-wire AC impedance, transhybrid balance Constant Current feed (20 to 41mA) Ring trip and loop closure thresholds Programmable signal generation DTMF generation and detection Metering pulse generation (12/16kHz) Enhanced Caller ID (FSK) generation (Type I and Type II) Tone generation (up to four simultaneous) G.711 -Law/A-Law / 16-bit linear PCM audio Loop test and diagnostics support Integrated loopback modes Realtime linefeed monitoring On-chip temperature sensor PCM and SPI bus digital interfaces PCM Master and Slave modes supported On-chip PLL for flexible clocking options including 1MHz / 2MHz 3.3V operation Small Footprint Packages: LQFP-48, QFN-48 APPLICATIONS Analog Telephone Adapter Voice enabled DSL Modems Voice enabled Cable Modems Residential VoIP Gateways / Routers Integrated Access Devices Fiber to the Premise/Home (FTTP/H) Optical Network Terminals (ONT) Set Top Boxes Wireless Local Loop PBX Conditioning Z matching Z matching & TransHybrid DC / DC Control Signaling Tone Generation Metering Pulse Generation DTMF Generation DTMF Detection Loopback Control Mode Control Thermal Supervision SPI PCM Sigma/delta DAC PCM Filters Sigma/delta ADC Ringing Generation FSK Generation Loop Supervision Line Diagnostic Gain Adjust Line Feed DACs Line Monitor ADC Ring Trip Detection Loop Closure Detection Loop Supervision DC feed Algorithm PLL DC/DC Supervision W681388 Revision 1.1 - 01/2008 Application Example: Analog Telephone Adapter (ATA) supporting 1 voice port Analog PCM Protection Protection t/r W681388 Control Discrete Front End Ethernet SPI Single Programmable Extended CODEC VoIP Processor DC-DC Converter VDD1 VDD1 RDC RAC NC1 RVE BAT TDC TAC TVE TIN TIP BENEFITS High integration reduces overall system BOM and footprint Low power consumption for battery-backup and other power sensitive applications High programmability reduces real-time software overhead Extensive line sensing enables diagnostics support 48 47 46 45 44 43 42 41 40 39 38 37 RIP RIN OTAPS OTAPF GND1 OTANF OTANS NC2 NC3 TEST INT CS 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 CR CT VREF1 VREF2 IREF GND2 VDD2 DCL DCH RESET GND2 NC4 W681388 48-Lead QFN/LQFP W681388 ORDERING INFORMATION Part Number W681388DG W681388YG Package LQFP-48 QFN-48 Notes Pb-Free Pb-Free 13 14 15 16 17 18 19 20 21 22 23 24 DCN PCMT GND3 BCLK SCLK DCP SDO SDI VDDL VDD3 FS PCMR Note: For more details on the W681388, please refer to Winbond America's web site at: http://www.winbond-usa.com (c) 2008 All Rights Reserved Printed in the U.S.A W681388 Revision 1.1 - 01/2008 |
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