Brief Description

The CMX868 is a multi-standard modem for use in telephone based information and telemetry systems. Control of the device is via a simple high speed serial bus, compatible with most types of µC serial interface. The data transmitted and received by the modem is also transferred over the same serial bus. On-chip programmable Tx and Rx USARTs meeting the requirements of V.14 are provided for use with asynchronous data and allow unformatted synchronous data to be received or transmitted as 8-bit words.

Features

· V.22 bis 2400/2400 bps QAM

· V.22, Bell 212A 1200/1200 or 600/600 bps DPSK

· V.23 1200/75, 1200/1200, 75, 1200 bps FSK

· Bell 202 1200/150, 1200/1200, 150, 1200 bps FSK

· V.21 or Bell 103 300/300 bps FSK

· DTMF/Tones Transmit and Receive

· ‘Powersave’ Standby Mode

Applications

· Telephone Telemetry Systems

· Remote Utility Meter Reading

· Security Systems

· Industrial Control Systems

· Electronic Cash Terminals

· Pay-Phones

· Cable TV Set-Top Boxes

CMX868属于集成电路（IC） > 调制解调器 - IC 和模块。CML公司制造生产的CMX868调制解调器 - IC 和模块接口调制解调器 IC 和模块是用于调制或解调来自电话或电缆线路的传入信号以便从计算机传输的器件。数据格式有 ASK、FSK、Bell 202、HART、V.21、V.22、V.23、V.32、V.34、V.90 和 V.92，波特率包括可选、300、1.2k、1.8k、2.4k、4.8k、9.6k、14.4k、19.2k、20k、33.6k、38.4k、56k 和 200k，安装类型有插口式、表面贴装型或通孔式。