FX613 Consumer Microcircuits Limited, FX613 Datasheet
FX613
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FX613 Summary of contents
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... Fax, Modem systems. Software can be simply configured to reject speech frequencies. Due to its ‘N-Tone’, non-predictive decoding capability, units employing the FX613 can be redeployed under a new national standard by a simple software amendment. Available in 16-pin plastic S.O.I.C. SMD and 14-pin plastic DIL packages, this low-cost, mixed analogue/digital ...
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... FX613P Xtal/Clock: The input to the on-chip clock oscillator inverter. A 3.579545MHz Xtal externally derived telephone system clock (f Note - The operation of the FX613 without a suitable Xtal/Clock input may cause device damage. Xtal: The output of the on-chip clock oscillator inverter. See Figure internal connection ...
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... wished to operate the device with disregard to on-chip level thresholds and permanently enable the FX613, the Level In pin should be held disable the FX613 the Level In pin should be held at V thresholds are preset internally. Fig.2 External Component Connections ...
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... FX613 must reset the µP timer. or white noise at the decoder input, OTONE the FX613 on-chip timer will be continually reset ‘Tone Measurement Complete’ interrupt will occur - the µP timer will run. ii The µ ...
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... Application Information ...... N = int (Frequency x Measurement Period) Measurement Period = 39.47ms for Low Band = 13.16ms for High Band Note: For input frequencies of between 661Hz and 899Hz the FX613 will give no reliable output. Bit 5 Band Bit (5) MSB (4) Output First HI-“1”/LO-“0” When a ‘correct’ decode has been allowed and an interrupt generated, a 6-bit data word will be presented at the Serial Output Port ...
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Application Information ...... Decoder Timing CHIP SELECT t CSE SERIAL CLOCK t DE DATA OUT TRI-STATE t IR IRQ Fig.4 Data-Read Timing Decoder Timing Characteristics With reference to Figure 4, Data-Read Timing . Characteristics t Serial Clock “High” Pulse Width ...
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... If a supply other than 3.3 volts is used, levels will change pro-rata. 3. Under ‘Pure Tone’ input conditions. 4. For input frequencies of between 661Hz and 899Hz the FX613 will provide no reliable output. 5. With an amplitude modulating frequency of between 16.0Hz and 100Hz. 6. Test noise input = 5.0kHz at 100mVrms = 0V) 25° ...
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... CML does not assume any responsibility for the use of any circuitry described. No circuit patent licences are implied and CML reserves the right at any time without notice to change the said circuitry. Handling Precautions The FX613 is a CMOS LSI circuit which includes input protection. However precautions should be taken to prevent static discharges which may cause damage. ...
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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. ...