W681388 Просмотр технического описания (PDF) - Winbond

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W681388

Single Programmable Extended CODEC/SLIC

Winbond 

Winbond W681388

Single Programmable Extended CODEC/SLIC

The 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

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 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

Sigma/delta

DAC

Sigma/delta

ADC

Line Feed

DACs

Line Monitor

ADC

DC / DC

Control

Conditioning

PCM Filters

Gain Adjust

Signaling

Tone

Metering Pulse

Generation

Generation

Ringing

Generation

DTMF

Generation

FSK

Generation

DTMF

Detection

PCM

Ring Trip

Detection

Loop

Supervision

Loopback

Control

Loop Closure

Line

Mode

SPI

Detection

Diagnostic

Control

Thermal

Loop Supervision Supervision

DC feed

Algorithm DC/DC Supervision

PLL

W681388

Revision 1.1 - 01/2008

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