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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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CMX625P4 Fiches technique(PDF) 1 Page - CML Microcircuits |
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CMX625P4 Fiches technique(HTML) 1 Page - CML Microcircuits |
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1 / 34 page  CMX625 ISDN TA POTS Interface 2001 Consumer Microcircuits Limited D/625/2 July 2001 Advance Information Features Applications •••• SPM and Ringing Voltage Generators •••• ISDN NTUs with Analogue Ports •••• Integrated DTMF Decoder/Encoder •••• ISDN Line Cards •••• V.23/Bell 202 FSK/Tone Generator •••• Wireless Local Loop Termination Cards •••• Selectable A-Law/µ-Law PCM Codec •••• ISDN Terminals with Additional POTS Ports •••• IOM-2 Interface Terminal Mode and •••• PC based ISDN Cards with Telephone Ports Non-Terminal Mode (Line Card Mode) •••• Billing/SPM Systems IOM is a trademark of Siemens AG 1.1 Brief Description The CMX625 is an integrated telecom tone generator, DTMF encoder/decoder and PCM Codec-Filter designed for ISDN interfaces, Wireless Local Loop and other digitised speech systems. The tone generator covers a wide range of pre-programmed tones used in analogue phone systems. Three outputs are provided: Ringing signals, In-band tones or FSK data, and 12kHz/16kHz Subscriber Metering pulses. The PCM Codec-Filter performs voice digitisation and reconstruction and incorporates band limiting and smoothing with selectable A-law or µ-law companding following ITU-T recommendation G.711. The DTMF decoder presents the serial bus interface with the DTMF dialling information received from the telephone user and the tone generator sends the appropriate DTMF tones to this POTS interface. Other tone standards supported are: Fax and Modem ‘answer’ and ‘originate’, ITU-T ‘R1’ and ‘R2’ signals, dual tones for CIDCW and 'On-Hook' signalling systems and sufficient tones for simple melody generation. The IOM ®-2 (ISDN Oriented Modular revision 2) industry standard serial bus provides the digital interface to other telecommunications ICs and supports both Terminal and non-Terminal (or Line Card) modes. The CMX625 is compatible with the CMX635 ISDN Subscriber Processor and can be used to provide the additional POTS port. It is available in both DIP and SSOP packages. |
Numéro de pièce similaire - CMX625P4 |
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Description similaire - CMX625P4 |
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