CMX602AP3 Consumer Microcircuits Limited, CMX602AP3 Datasheet
CMX602AP3
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CMX602AP3 Summary of contents
Page 1
... It is suitable for use in systems to BT specifications SIN227 and SIN242, Bellcore GR-30-CORE and SR-TSV- 002476, CCA TW/P&E/312, ETSI ETS 300 659 parts 1 and 2, ETS 300 778 parts 1 and 2 and Mercury Communications MNR 19. 1998 Consumer Microcircuits Limited Call Waiting (Type II) Applications CLI and CIDCW Adjunct Boxes ...
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... Tone Alert Detector ...................................................................... 10 1.5.8 Ring or Line Polarity Reversal Detector .................................... 11 1.5.9 Xtal Osc and Clock Dividers ....................................................... 13 1.6 Application Notes......................................................................................... 14 1.6.1 'On-Hook' Operation .................................................................... 14 1.6.2 'Off-Hook' Operation .................................................................... 17 1.7 Performance Specification .......................................................................... 19 1.7.1 Electrical Performance ................................................................ 19 1.7.2 Packaging ..................................................................................... 23 1998 Consumer Microcircuits Limited CONTENTS 2 CMX602A Page D/602A/4 ...
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... Calling Line Identifier 1.2 Block Diagram 1998 Consumer Microcircuits Limited Figure 1 Block Diagram 3 CMX602A D/602A/4 ...
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... NINV BIAS 10 MODE 11 ZP 1998 Consumer Microcircuits Limited Signal Type O/P The output of the on-chip Xtal oscillator inverter. I/P The input to the on-chip Xtal oscillator inverter. I/P (S) Input to the Ring or Line Polarity Reversal Detector. BI Open-drain output and Schmitt trigger input forming part of the Ring or Line Polarity Reversal detector ...
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... Notes: I/P = Input I/P (S) = Schmitt trigger input O/P = Output BI = Bidirectional 1998 Consumer Microcircuits Limited Signal Type O/P An open-drain active low output that may be used as an Interrupt Request / Wake-up input to the associated µC. An external pull-up resistor should be connected between this output and V ...
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... Resistors 1%, capacitors 20% unless otherwise stated. Figure 2 Recommended External Components for Typical Application It is recommended that the printed circuit board is laid out with a ground plane in the CMX602A area to provide a low impedance ground connection to the V 1998 Consumer Microcircuits Limited for V = 3.3V DD for ...
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... R10 = 160k R10 / (R8 - R10) The target differential voltage gain depends on the expected signal levels between the A and B wires and the CMX602A's internal threshold levels, which are proportional to the supply voltage. 1998 Consumer Microcircuits Limited Mode DET o/p from Tone Alert Signal ...
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... In FSK Receive mode the CMX602A DET output will be set high when the level has exceeded the threshold for sufficient time. Amplitude and time hysteresis are used to reduce chattering of the DET output in marginal conditions. Note that in FSK Receive mode this circuit may also respond to non-FSK signals such as speech. 1998 Consumer Microcircuits Limited = 5.0V, and R9 should be 240k 1000 900 ...
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... The only restrictions on the timing of the RXCK waveform are those shown in Figure 5a and the need to complete the transfer of all eight bits into the C within 8.3ms (the time of a complete character at 1200 baud). 1998 Consumer Microcircuits Limited See section 1.7.1 for definitions of Teon and Teoff ...
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... Tone Alert (CAS) signals used in off-hook applications, the longer (88 to 110ms) Tone Alert signal employed by BT for on-hook applications will not necessarily cause IRQN to go low. 1998 Consumer Microcircuits Limited tclo = RXCK low time; min 1 S Figure 5a : FSK Operation With Data Retiming ...
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... These circuits are used to detect the Line Polarity Reversal and Ringing signals associated with the Calling Line Identification protocol. Figure 7 illustrates their use in a typical application. Figure 7 : Ring or Line Polarity Reversal operation 1998 Consumer Microcircuits Limited See section 1.7.1 for definitions of Tton, Ttoff and TqCAS Figure 6 : Tone Alert Detector operation 11 ...
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... If necessary, the µC can distinguish between a ring and a reversal by timing the length of the IRQN or DET output. 1998 Consumer Microcircuits Limited ( 0.7 + Vthi 0.707 Vrms as Figure 2, then setting R2 to 68k over the range 2.7 to 5.5V. ...
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... If the clock is provided by an external source which is not always running, then the ZP input must be set high when the clock is not available. Failure to observe this rule may cause a significant rise in the supply current drawn by CMX602A as well as generating undefined states of the RXD, DET and IRQN outputs. 1998 Consumer Microcircuits Limited 13 CMX602A ...
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... line terminations while the FSK data is being received, however ETS 300 659-1 allows for the possibility termination being applied. Note that, for simplicity of presentation, the Data Retiming function is not used in Figure 8b (RXCK is kept high). 1998 Consumer Microcircuits Limited Figure On-hook System Signals 14 ...
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... AC and DC line terminations during FSK reception are optional. Mercury Communications Ltd. specification MNR 19 allows for either the BT system or that specified by CCA. As these are all slight variants on the BT and Bellcore systems, they can also be handled by the CMX602A. 1998 Consumer Microcircuits Limited Figure 8b : Bellcore On-hook System Signals 15 ...
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... Calling Line Identifier Figure 8c : Flow Chart for On-hook Operation of CMX602A 1998 Consumer Microcircuits Limited 16 CMX602A D/602A/4 ...
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... CMX602A is in Tone Detect mode and the DET output is high. Doing this will markedly reduce the number of false responses generated by local (near end) speech. Note that the DET output is not used for any other purpose in an off-hook application when the CMX602A is set to Tone Alert Detect mode. 1998 Consumer Microcircuits Limited 17 CMX602A D/602A/4 ...
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... ACK signal, and the transaction abandoned if the DET output goes high during this time, which would be the case if a false CAS detect had been caused by far end speech. Figure 9b : Flow Chart for Off-hook Operation of CMX602A 1998 Consumer Microcircuits Limited 18 CMX602A ...
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... Correct operation of the device outside these limits is not implied. Supply ( Operating Temperature Xtal frequency Notes Xtal frequency of 3.579545MHz ±0.1% is required for correct Tone Alert and FSK detection. 2. Operating temperature range -10°C to +60° 1998 Consumer Microcircuits Limited pins SS Notes Min. Max. Units -0.3 7 ...
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... Dual tone burst duration for DET output Dual tone burst duration to ensure IRQN goes low To ensure non-detection: 'Low' tone frequency tolerance 'High' tone frequency tolerance Level (total) Dual tone burst duration 1998 Consumer Microcircuits Limited = 3.3V to 5.5V at Tamb = -40 to +85°C, DD 0.1% Notes Min. 1,2 1 ...
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... Flat noise in 300 - 3400Hz band for V23, 200 - 3200Hz for Bell202. 6. Meeting any of these conditions will ensure non-detection. 7. Open loop, small signal low frequency measurements. 8. Timing for an external input to the CLOCK/XTAL pin. 1998 Consumer Microcircuits Limited Notes Min. 1188 1280 ...
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... Calling Line Identifier 4 3.5 3 2.5 Vin 2 1 Figure 10 : Schmitt Trigger typical input voltage thresholds vs 0.1 0.01 0.001 0.0001 -40 Figure 11 : Typical 'Zero Power' I 1998 Consumer Microcircuits Limited Vthi Vtlo 3 -30 -20 - Temperature vs. Temperature ( 5 5.0V) DD CMX602A D/602A/4 ...
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... Packaging Figure 12 : 16-pin SOIC (D4) Mechanical Outline: Order as part no. CMX602AD4 Figure 13 : 16-pin DIL (P3) Mechanical Outline: Order as part no. CMX602AP3 Handling precautions: This product includes input protection, however, precautions should be taken to prevent device damage from electro-static discharge. CML does not assume any responsibility for the use of any circuitry described ...
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... CML Microcircuits Product Prefix Codes Until the latter part of 1996, the differentiator between products manufactured and sold from MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX respectively. These products use the same silicon etc. and today still carry the same prefixes. ...
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... CML Microcircuits Product Prefix Codes Until the latter part of 1996, the differentiator between products manufactured and sold from MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX respectively. These products use the same silicon etc. and today still carry the same prefixes. ...