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CMX625P4 bảng dữ liệu(PDF) 22 Page - CML Microcircuits |
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CMX625P4 bảng dữ liệu(HTML) 22 Page - CML Microcircuits |
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22 / 34 page ![]() ISDN TA POTS Interface CMX625 2001 Consumer Microcircuits Limited 22 D/625/2 Example 2: Read the CMX625 DTMF RX DATA register, D3-D0=$A. Set IOM-2 address to SA2-SA0 =100 and device select, DS=0. MX (DD) MR (DU) DD (hex) MX (DU) MR (DD) DU (hex) Comment 1 1 FF 1 1 FF Monitor Channel Idle State 0 1 C0 1 1 FF Transmit IOM-2 Address 0 0 C0 1 1 FF Acknowledge Address 1 0 0B 1 1 FF Transmit Command (Write IOM-2 Control, $B) 0 1 0B 1 1 FF 1 0 FF 0 1 CB Acknowledge Command/ Send Address 1 1 FF 0 0 CB Address Acknowledged 1 1 FF 1 0 0A Send DTMF Read Data 1 1 FF 0 1 0A 1 1 FF 1 0 FF Data Acknowledged 1 1 FF 1 1 FF End of Transmission 1 1 FF 1 1 FF Idle 1.5.16 Glossary ADC Analogue to Digital Converter CIDCW Caller Identification During Call Waiting CODEC Coder/Decoder DAC Digital to Analogue Converter DTMF Dual Tone Multiple Frequency FSK Frequency Shift Keying GCI General Circuit Interface IOM-2 ISDN Oriented Modular revision 2 ISDN Integrated Services Digital Network ITU International Telecommunication Union NTU Network Termination Unit PC Personal Computer PCM Pulse Code Modulation POTS Plain Old (Analogue) Telephone Service SPM Subscriber Pulse Metering TA Terminal Adaptor |
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