Product Preview PP/865A/1a February 2015 DTMF Codec and FSK Modem Signalling Device Brief Description DTMF (Dual Tone MultiFrequency) signalling is fundamental to telephone line connectivity and interconnect. The CMX865A combines a high performance DTMF encoder/decoder with a V.23/V.21/Bell 103/Bell202 FSK modem, in a single IC. The CMX865A provides a unique combination of an industrial standard DTMF encoder/decoder combined with a multi-standard FSK modem. This enables basic call setup and call progress functionality followed by data signalling for remote control, status notification and data acquisition in a wide variety of applications. The high-quality DTMF decoder has excellent immunity to falsing on voice and includes a standard DTMF encoder. Alternatively, these blocks can be used to transmit and detect userspecific, programmed single and dual-tone signals, simple melodies, call progress signals or modem calling and answering tones. The multi-standard telephone line modem is ideally suited to telephone based information and telemetry systems. A flexible line driver, hybrid and receiver circuits are integrated on chip, requiring only passive external components to build a 2 or 4-wire line interface. Host control and data transfer is via a serial bus that operates in normal and Powersave modes and is compatible with most types of µC serial interface. An embedded USART allows multi-format asynchronous data and unformatted synchronous data to be received or transmitted as 8-bit bytes. The CMX865A operates from a single 3.0V to 3.6V supply over a temperature range of -40°C to +85°C and is available in 16-pin SOIC (D4) and 16-pin TSSOP (E4) packages. CMX865A Features  High Performance DTMF Encoder/Decoder Wireless Local Loop Wireless data terminals Security systems Lift communications Alarm panels Call blockers SMS phones PABX/PBX Feature phones Industrial control General DTMF signalling Remote meter reading Repeater systems POS terminals  User Programmable Tones  Multi-standard Modem  V.23 1200/75, 1200/1200, 75, 1200 bps FSK  Bell 202 1200/150, 1200/1200, 150, 1200  Fully isolated 2-wire interface (DAA)  Scripts aid evaluation and product  5V power supply with on-board regulator  Call progress tone detection  Modem calling/answer tones  Serial bus interface to host XTALN XTAL C2 IRQN VSSD VSSA RXAN SERIAL CLOCK COMMAND DATA  Multi-formatted asynchronous data transfer  Unformatted synchronous data transfer REPLY DATA Provides fast and efficient evaluation of the CMX865A DTMF/FSK Combo IC  Direct connection to the PE0003 Universal

Product Preview CMX865A - Function Block Diagram Evaluation Support Universal Interface Card Include mold deflash or protrusions. not include mold deflash or protrusions, 16-pin TSSOP (E4) Mechanical Outline 16-pin SOIC (D4) Mechanical Outline Email Sales: Email Tech Support: COMMUNICATION SEMICONDUCTORS COMMUNICATION SEMICONDUCTORS COMMUNICATION SEMICONDUCTORS