Product Preview PP/865A/1a February 2015 CMX865A DTMF / FSK Combo IC DTMF Codec and FSK Modem Signalling Device Introduction 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 New PE0302-865A Evaluation Kit Applications 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) bps FSK Scripts aid evaluation and product V.21 or Bell 103 300/300 bps FSK development 5V power supply with on-board regulator Call progress tone detection Modem calling/answer tones Serial bus interface to host CMX865A Pin-out VDEC VDD C1 X1 VSSD XTALN XTAL C2 IRQN VSSD VSSA RXAN Rx Line Interface RXFB 1 4 5 6 SERIAL CLOCK 15 CMX865A DTMF/FSK Combo IC COMMAND DATA 14 TXA 11 8 9 Multi-formatted asynchronous data transfer Unformatted synchronous data transfer VDD 12 10 Serial Bus to Host CSN 13 7 Embedded USART REPLY DATA 16 2 3 Low Power 3.0V - 3.6V operation Tx Line Interface TXAN 16-pin SOIC Package VBIAS C3 VSSA © 2015 CML Microsystems Plc Low Voice Falsing Provides fast and efficient evaluation of the CMX865A DTMF/FSK Combo IC Direct connection to the PE0003 Universal Interface Card that includes PC Software 1 16-pin TSSOP Package CMX865A - DTMF/FSK Combo IC Product Preview CMX865A - Function Block Diagram FSK Modulator C-BUS Serial Interface + TX/Rx Data Registers & UART IRQN Serial Clock Command Data CSN Reply Data XTALN ∑ TXAN Tx Level Control DTMF/Tone Generator Local Analogue Feedback FSK Demodulator Receive Filter & Equaliser VBIAS VDD VDEC VSSD Rx Gain Control VBIAS Detector Modem Energy Detector XTAL/CLOCK TXA Transmit Filter & Equaliser RXAN DTMF/Tone Call Progress Answer Tone RXAFB Rx Input Amplifier VSSA Evaluation Support CMX865A Packages 16-pin SOIC (D4) Mechanical Outline Order as part no. CMX865AD4 16-pin TSSOP (E4) Mechanical Outline Order as part no. CMX865AE4 Phone: +44 (0) 1621 875500 +1 336 744 5050 +65 62 888129 800 638 5577 Fax: +44 (0) 1621 875600 +1 336 744 5054 +65 62 888230 Email Sales: [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] Email Tech Support: www.cmlmicro.com © 2015 CML Microsystems Plc Search for: cmlmicro 2