CMX673D4数据手册集成电路（IC）的电信规格书PDF

描述 Description

Brief Description
The CMX673is a general purpose call progress tone detector for use in Public Switched Telephone System (PSTN) applications. Call progress detection allows equipment which dials into the PSTN network to monitor the progress of the resulting call. Ringing, Busy, Not available and Answer states can be determined. The CMX673 uses advanced digital signal processing techniques to detect tones in the frequency band 315Hz to 650Hz. The use of DSP techniques allows the CMX673 to distinguish between valid call progress tone signals and line noise or voice, low false detection rates result. This is in contrast to other call progress detection devices which are based on simple filtering techniques. The detection

特性 Features

·  Worldwide Tone Compatibility
·  Single and Dual Tones Detected
·  Wide Dynamic Signal Range
·  Fast Response Time
·  Low Power Operation 500µA at 3.0V
·  3.58MHz Xtal/Clock OscillatorApplications
·  Worldwide Payphone Systems
·  Telephone Redialling Systems
·  Dialling Modems
·  Banking and Billing Systems
·  Telecom Test Equipment
·  Telecom Security Systems

简介

CMX673D4属于集成电路（IC）的电信。由制造生产的CMX673D4电信电信接口集成电路 (IC) 为通信网络接口提供特定功能和控制，例如以太网切换、线路驱动器、ISDN、放大器、通道扩展器、数字锁相环、DTMF、音频发生器和解码器、回声消除、检测器和发生器、DDA、电话线路监控器和主叫号码标识。