Low Power V.22 Modem

The CMX867 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 interfaces. 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, Bell 212A 1200/1200 or 600/600bps DPSK
• V.23 1200/75, 1200/1200, 75, 1200bps FSK
• Bell 202 1200/150, 1200/1200, 150, 1200bps FSK
• V.21 or Bell 103 300/300bps FSK
• DTMF/Tones Transmit and Receive
• Extremely Low Power: 3.5mA/3V, 6.5mA/5V typ.
• Powersave Standby Mode
• Upward Compatible to CMX868 2400bps V.22bis Modem

APPLICATIONs
• Phone Line Powered Devices
• Payphones
• Remote Utility Meter Reading
• POS Terminals
• Cable TV Set Top Box (STB)
• Telephone Telemetry Systems
• Security Systems
• Industrial Control Systems
• Modem Links with Caller ID