FX602P3 Consumer Microcircuits Limited, FX602P3 Datasheet

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FX602P3

Manufacturer Part Number
FX602P3
Description
Calling line identifier
Manufacturer
Consumer Microcircuits Limited
Datasheet

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FX602P3
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1.0
1.1
The FX602 is a low power CMOS integrated circuit for the reception of the physical layer signals used in BT's
Calling Line Identification Service (CLIP), Bellcore's Calling Identity Delivery system (CID), the Cable
Communications Association's Caller Display Services (CDS), and similar evolving services. It also meets the
requirements of emerging Caller Identity with Call Waiting services.
The device includes a 'zero-power' ring or line polarity reversal detector, a dual-tone (2130Hz plus 2750Hz)
Tone Alert Signal detector and a 1200-baud FSK V23/Bell202 compatible asynchronous data demodulator with
a data retiming circuit which removes the need for a UART in the associated µC.
It is suitable for use in systems to BT specifications SIN227 and SIN242, Bellcore TR-NWT-000030 and SR-
TSV-002476, CCA TW/P&E/312, ETSI ETS 300 659 parts 1 and 2, and Mercury Communications MNR 19.
1998 Consumer Microcircuits Limited
CLI and CIDCW Detector with:
On-Hook and Off-Hook Operation
'Zero-Power' Ring or Line Polarity
Reversal Detector
V23/Bell202 FSK Demodulator
with Data Retiming facility
Dual-Tone Alert Detector
Features
Brief Description
CML Semiconductor Products
Calling Line Identifier
Low Voltage Operation
For Bellcore, ETSI, British Telecom
and Mercury Systems
minimise system operating power
16-pin SOIC and DIL packages
C Interrupt/Wake-up output to
FX602
Provisional Information
D/602/7 February 1998

Related parts for FX602P3

FX602P3 Summary of contents

Page 1

... UART in the associated µ suitable for use in systems to BT specifications SIN227 and SIN242, Bellcore TR-NWT-000030 and SR- TSV-002476, CCA TW/P&E/312, ETSI ETS 300 659 parts 1 and 2, and Mercury Communications MNR 19. 1998 Consumer Microcircuits Limited FX602 Low Voltage Operation ...

Page 2

... Tone Alert Detector ...................................................................... 12 1.5.8 Ring or Line Polarity Reversal Detector .................................... 13 1.5.9 Xtal Osc and Clock Dividers ....................................................... 15 1.6 Application Notes......................................................................................... 16 1.6.1 'On-Hook' Operation .................................................................... 16 1.6.2 'Off-Hook' Operation .................................................................... 17 1.7 Performance Specification .......................................................................... 26 1.7.1 Electrical Performance ................................................................ 26 1.7.2 Packaging ..................................................................................... 30 1998 Consumer Microcircuits Limited CONTENTS 2 FX602 Page D/602/7 ...

Page 3

... Calling Line Identifier 1.2 Block Diagram 1998 Consumer Microcircuits Limited Figure 1 Block Diagram 3 FX602 D/602/7 ...

Page 4

... 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 ...

Page 5

... 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 ...

Page 6

... V 680k for V (See section 1.5.2) R9 240k for V 200k for V (See section 1.5.2) R10 160k R11 100k Resistors 1%, capacitors 20% unless otherwise stated. Figure 2 Recommended External Components for Typical Application 1998 Consumer Microcircuits Limited = 5.0V DD 20% 6 C1, C2 18pF C3 0.33 F ...

Page 7

... FX602's internal threshold levels, which are proportional to the supply voltage. The FX602 has been designed to meet the applicable specifications with R8 = 470k rising to 680k 5.0V, and R9 should be 240k DD section 1.4 and Fig 3c. 1998 Consumer Microcircuits Limited Mode DET o/p from Tone Alert Signal Detection FSK Level Detector Ring or Line Polarity Reversal Detector ...

Page 8

... This block operates by measuring the level of the signal at the output of the Bandpass Filter, and comparing it against a threshold which depends on whether FSK Receive or Tone Alert Detect mode has been selected. In Tone Alert Detect mode the output of the Level Detector block provides an input to the Tone Alert Signal Detector. 1998 Consumer Microcircuits Limited R8 3 3.5 ...

Page 9

... 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 8.3mSec (the time of a complete character at 1200 baud). 1998 Consumer Microcircuits Limited See section 1.7.1 for definitions of Teon and Teoff Figure 4 : FSK Level Detector operation ...

Page 10

... The FX602 DET output will be set high while a valid Tone Alert signal is detected. At the end of the Tone Alert signal the DET output will go low and the IRQN output will be pulled low until the FX602 is switched out of Tone Alert Detector mode. 1998 Consumer Microcircuits Limited tclo = RXCK low time; min 1 S Figure 5a : FSK Operation With Data Retiming ...

Page 11

... 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 and Ttoff Figure 6 : Tone Alert Detector operation 11 ...

Page 12

... 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 3.0 to 5.5V. ...

Page 13

... 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 FX602 as well as generating undefined states of the RXD, DET and IRQN outputs. 1998 Consumer Microcircuits Limited 13 FX602 ...

Page 14

... The BT Tone Alert signal consists of simultaneous 2130Hz and 2750Hz tones. The 'Chan Seize' signal consists of a '1010..' FSK bit sequence in all cases. Note that the Data Retiming function is not used in these examples (RXCK is kept high). 1998 Consumer Microcircuits Limited Figure System signals Figure 8b : Bellcore System signals ...

Page 15

... Overview A successful CIDCW transaction as described in Bellcore SR-TSV-002476 consists of a sequence of actions between the CPE (Customer Premises Equipment - e.g. a telephone) and the Central Office as indicated in Figure 9a. 1998 Consumer Microcircuits Limited 15 FX602 D/602/7 ...

Page 16

... This involves measuring the FX602 DET output pulse duration, controlling the muting of near end voice, watching for further DET output activity, and controlling whether the FX602 is in Dual Tone Alert or FSK Receive modes, as shown in Figure 9b below. Figure 9b : FX602 Operation during CIDCW Transaction 1998 Consumer Microcircuits Limited 16 FX602 D/602/7 ...

Page 17

... Calling Line Identifier CIDCW Transaction Initiation Detection Algorithm The following State Transition Diagram, (Figure 9c) and explanatory text provide a detailed description of the CIDCW detection procedure shown in Figure 9b. Figure 9c : FX602 Based CIDCW Transaction State Transition Diagram 1998 Consumer Microcircuits Limited 17 FX602 D/602/7 ...

Page 18

... If the timer reaches 50ms then a valid CAS has been detected the COMPLETE_CIDCW state. 5. COMPLETE_CIDCW state This state handles the remaining CIDCW transaction functions e.g. determine that no near end extensions are off hook, send a dtmf ACK signal to the Central Office, receive FSK Caller ID data stream, etc. 1998 Consumer Microcircuits Limited 18 FX602 D/602/7 ...

Page 19

... T3, the minimum length of a valid DET output high time, should be equal to T1 plus T2 plus 10ms, i.e. between 25 and 30ms. Option (b) reduces the frequency of short speech mutes by a factor of about 5 at the expense of a small increase in the number of missed CAS signals. 1998 Consumer Microcircuits Limited 19 FX602 D/602/7 ...

Page 20

... The actual duration of the '50ms' monitoring period is not critical but should be at least 30ms to allow time for the FSK level detector to respond. 1998 Consumer Microcircuits Limited 20 FX602 D/602/7 ...

Page 21

... Calling Line Identifier Timing Diagrams Figures illustrate the CIDCW transaction initiation sequence for various cases. Figure 9d : Valid CIDCW Transaction Initiation Sequence 1998 Consumer Microcircuits Limited 21 FX602 D/602/7 ...

Page 22

... Calling Line Identifier Figure 9e : Invalid CIDCW Transaction Initiation Sequence Figure 9f : Invalid CIDCW Transaction Initiation Sequence 1998 Consumer Microcircuits Limited (DET Output high for less than time T3) (DET Output high for more than 65ms) 22 FX602 D/602/7 ...

Page 23

... Calling Line Identifier Figure 9g : Invalid CIDCW Transaction Initiation Sequence (DET Output goes high during 50ms 'quiet' period) 1998 Consumer Microcircuits Limited 23 FX602 D/602/7 ...

Page 24

... Operating Limits 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. 1998 Consumer Microcircuits Limited pins SS Notes 1 24 Min. Max. Units -0.3 7 ...

Page 25

... Signal to Noise ratio Dual tone burst duration 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 ...

Page 26

... 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 ...

Page 27

... 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 -30 Figure 11 : Typical 'Zero Power' I 1998 Consumer Microcircuits Limited Vthi 3 -20 - Temperature vs. Temperature ( Vtlo 4 5.0V) DD FX602 D/602/7 ...

Page 28

... Packaging Figure 12 : 16-pin SOIC (D4) Mechanical Outline: Order as part no. FX602D4 Figure 13 : 16-pin DIL (P3) Mechanical Outline: Order as part no. FX602P3 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 29

... 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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