FX663 Consumer Microcircuits Limited, FX663 Datasheet
FX663
Available stocks
Related parts for FX663
FX663 Summary of contents
Page 1
... A fax and modem tone decoder. A separate, adjustable threshold, signal-level detector which reduces noise falsing. The FX663 uses new digital signal processing techniques to provide these advantages low cost, low power product with superior performance available in industry standard 16-pin packages. 1999 Consumer Microcircuits Limited ...
Page 2
... Section 1.0 Features ......................................................................................................1 1.1 Brief Description.........................................................................................1 1.3 Signal List ...................................................................................................4 1.4 External Components.................................................................................6 1.5 General Description....................................................................................7 1.5.1 Overall Function Description .....................................................7 1.5.2 Glossary ......................................................................................7 1.5.3 Block Diagram Description.........................................................8 1.5.4 Decode Output Truth Table ........................................................9 1.6 Application Notes .......................................................................................9 1.6.1 General ........................................................................................9 1.6.2 Typical Response......................................................................10 1.7 Performance Specification.......................................................................11 1.7.1 Electrical Performance..............................................................11 1.7.2 Packaging..................................................................................16 1999 Consumer Microcircuits Limited CONTENTS 2 Page D/663/3 ...
Page 3
... AMPOP AMPINV SIGNAL AMPNINV VBIAS SIGIN C3 XTAL/CLOCK XTALN VSS 1999 Consumer Microcircuits Limited LEVEL DETECTOR OPAMP 620Hz DETECTOR SIGNAL ANALYSER AMPLIFIER C A LLPROGRES DETECTOR CLOCK OSCILLATOR AND DIVIDERS Figure 1 Block Diagram 3 ENABLE CSN IRQN ...
Page 4
... CSN 8 IRQN 9 ENABLE 1999 Consumer Microcircuits Limited Description Type O/P The inverted output of the on-chip oscillator. I/P The input to the on-chip oscillator, for external Xtal circuit or clock. O/P D3, D2, D1 and 4-bit parallel data word O/P output to the µController. The transmission of O/P data is under the control of the CSN input ...
Page 5
... AMPOP Notes: I/P = Input O/P = Output 1999 Consumer Microcircuits Limited Description Type Power The negative supply rail (ground). I/P Signal input. The signal to this pin should be ac coupled. The dc bias of this pin is set internally. O/P Internally generated bias voltage, held at V when the device is not in powersave mode. It should be decoupled capacitor mounted close to the device pins ...
Page 6
... DD C1 33pF C2 33pF C3 0.1µF C4 0.1µF C5 100pF C6 1.0µF C7 1µF Figure 2 Recommended External Components 1999 Consumer Microcircuits Limited XTALN 16 1 XTAL FX663 CSN 10 7 IRQN 9 8 ±20% R1 ±20% R2 ±20% R3 ±20% ±20% X1 ±20% ±20 ...
Page 7
... Call Progress Band, or (b) within the nominal range 190Hz to 895Hz, but NOT meeting the DETECTION REQUIREMENTS when the signal falls in the Call Progress Band. Subject to the duration and other characteristics of such signals, the FX663 will usually interpret these as a Non Call Progress Signal (e.g. speech or other signal activity). ...
Page 8
... The OPAMP is configured as an amplifier with external components R1, R2, C4 and C5. The level detector operates by measuring the level of the amplified input signal and comparing it with a preset threshold which is defined inside the FX663 as shown in the detect equation. The detector output goes to the Control and Output Logic block. The data output is gated with the level detector's output ...
Page 9
... An interrupt is produced when the decode state is changed. This interrupt is reset by CSN going to logic "0". When CSN is permanently at "0", the interrupt condition µs logic "0" pulse on the IRQN pin. When CSN is set to logic "1", the data word output (D0-D3) goes into a high impedance state. 1999 Consumer Microcircuits Limited D0 Conditions ...
Page 10
... Typical Response 1999 Consumer Microcircuits Limited Figure 3 Typical Response Chart 10 D/663/3 ...
Page 11
... P3 and D4 Package Total Allowable Power Dissipation at Tamb = 25°C ... Derating Storage Temperature Operating Temperature Operating Limits Correct operation of the device outside these limits is not implied. Supply ( Operating Temperature Xtal Frequency 1999 Consumer Microcircuits Limited pins SS Notes 11 Min. Max. Units -0.3 7 0.3 ...
Page 12
... Small signal impedance over the frequency range 100Hz to 2300Hz and at 5.0V. 5. Input signal level is multiplied by the voltage gain (-R2/R1). The overall signal should be larger than 250mVp- Open loop, small signal low frequency measurements. 7. Timing for an external input to the XTAL/CLOCK pin. 1999 Consumer Microcircuits Limited Notes ...
Page 13
... D3 "0" CSN IRQN Figure 5 Timing Diagram: Non Call Progress Signal Note '1' only when the Call Progress signal Non Call Progress signal single frequency tone. 1999 Consumer Microcircuits Limited t L CPTone Single Tone 620 ...
Page 14
... CSN IRQN Figure 6 Timing Diagram: Special Information Tones Signal Fax/Modem SIGIN ENABLE Tri-state "0" "0" "0" CSN IRQN 1999 Consumer Microcircuits Limited t L Special Information Information Tone Tone DRP Fax/Modem Low Tone ...
Page 15
... Notes: 8. Timing also applies to Special Information Tones and Fax/modem Tones. 9. Only applies to burst of the same frequency. 10. If the gap > 90ms Signal state will be detected. 11. Special Information Tones and Fax/modem tones t 1999 Consumer Microcircuits Limited Call Progress Signal ...
Page 16
... Call Progress Decoder 1.7.2 Packaging Figure 9 D4 Mechanical Outline: Order as part no. FX663D4 Figure 10 P3 Mechanical Outline: Order as part no. FX663P3 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 ...
Page 17
... 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. ...