CMX605(1999) Ver la hoja de datos (PDF) - MX-COM Inc

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CMX605
(Rev.:1999)

Digital Line to POTS Interface

MX-COM Inc  

DATA BULLETIN

CMX605

Digital Line to

POTS Interface

PRELIMINARY INFORMATION

Features

• Pre-Programmed Tone Generators

• Fully Integrated DTMF Decoder/Encoder

• SPM Generator

• Simple Serial Control Interface

• 3.58MHz Xtal/Clock

• V.23/Bell 202 FSK Generator

• Digital Ringing Voltage Generator

Applications

• Digital Line to POTS Interface

• Subscriber Terminal Adapters

• Wireless Local Loop

• Computer Telephony Integration

• Telephone/Radio Patch Systems

• Pair Gain Systems

• Billing/SPM Systems

Analog Telephone Port

Codec

SLIC

µC

CALLER ID

RING

DIAL

CMX605

DC-to-DC

Digital Line Circuit

The CMX605 is an integrated telecom tone generator and DTMF encoder/decoder designed for ISDN

interfaces, Wireless Local Loop and Analog to Digital Telephone Conversion systems. The tone generator

covers an extensive range of pre-programmed tones used in analog telephone systems (POTS). Three

outputs are provided: ‘Ringing signals’, ‘In-band tones or FSK data’, and ‘12kHz/16kHz Metering pulses’.

Simple software control facilitates the interface to a wide range of commonly used µCs and SLICs, enabling a

comprehensive analog telephone line presentation.

The DTMF encoder/decoder presents the digital line interface with DTMF dialing information received from

the telephone user and generates the appropriate DTMF tones for the POTS interface. DTMF tone pairs can

be encoded along with each tone singly or with other dual tone signals, such as those used in CIDCW

systems and ‘On Hook’ signaling systems.

Other tone standards supported are: Fax and Modem ‘answer’ and ‘originate’, ITU (CCITT) ‘R1’ and ‘R2’

signals, and sufficient tones for simple melody generation. Communication to and from the host µC is

performed by a ‘C-BUS’ interface which is compatible with common serial interfaces such as: SCI, SPI, and

Microwire.

The CMX605 operates using a 2.7V to 5.5V supply and is available in the following packages: 16-pin SOIC

(CMX605D4) and 16-pin PDIP (CMX605P3).

©1999 MX-COM, Inc.

www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054

Doc. # 20480195.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA

All trademarks and service marks are held by their respective companies.

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