Winbond W681388 Single Programmable Extended CODEC/SLIC T he 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 μ-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. 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 Signaling Z matching & TransHybrid Metering Pulse Generation PCM Filters Ringing Generation DTMF Generation Gain Adjust FSK Generation DTMF Detection Ring Trip Detection Loop Supervision Loopback Control Loop Closure Detection Line Diagnostic Mode Control Sigma/delta ADC Line Monitor ADC 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 μ-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 Tone Generation Sigma/delta DAC Line Feed DACs FEATURES Loop Supervision DC / DC Control DC feed Algorithm PCM SPI Thermal Supervision PLL DC/DC Supervision W681388 Revision 1.1 - 01/2008 Application Example: Analog Telephone Adapter (ATA) supporting 1 voice port Analog Discrete Front End Protection t/r PCM W681388 Control Single Programmable Extended CODEC Ethernet SPI VoIP Processor BENEFITS TAC RAC TDC RDC TVE BAT RVE TIN TIP VDD1 VDD1 NC1 DC-DC Converter 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 36 2 35 3 34 4 33 5 32 W681388 48-Lead QFN/LQFP 6 7 31 30 8 29 9 28 10 27 11 26 12 25 CR CT VREF1 VREF2 IREF GND2 VDD2 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 W681388 ORDERING INFORMATION DCL DCH RESET Part Number Package Notes GND2 W681388DG LQFP-48 Pb-Free W681388YG QFN-48 Pb-Free NC4 PCMR FS BCLK VDD3 PCMT VDDL GND3 DCP DCN SDI SDO SCLK 13 14 15 16 17 18 19 20 21 22 23 24 Note: For more details on the W681388, please refer to Winbond America’s web site at: http://www.winbond-usa.com © 2008 All Rights Reserved Printed in the U.S.A W681388 Revision 1.1 - 01/2008