MT88E46AS Zarlink, MT88E46AS Datasheet
MT88E46AS
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... Copyright 2000-2006, Zarlink Semiconductor Inc. All Rights Reserved. Bellcore Compliant Calling Number SR- MT88E46AS MT88E46ASR MT88E46AS1 MT88E46ASR1 • Computer Telephony Integrated (CTI) systems Description The MT88E46 is a CMOS integrated circuit suitable for receiving the FSK and CAS signals in North American (Bellcore) CIDCW, CWD and CID (Calling Identity Delivery) services ...
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MT88E46 Change Summary Changes from March 2000 Issue to November 2006 Issue. Page Item 1 Pin Description Pin # Name Voltage Reference (Output). Nominally Vdd/ used to bias the GS1 (Tip/Ring connection) and 1 V REF GS2 (telephone ...
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Data Sheet Pin Description Pin # Name 3-Wire FSK Interface Data Clock (Schmitt Logic Input/CMOS Logic Output). In interface mode 0 (when the CB0 pin is logic low) this is a CMOS output whose rising edge denotes the nominal mid-point ...
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MT88E46 Control Bit (CB0/1/2) Functionality FSK Input CB0 CB1 CB2 Interface Op-Amp 0 Set by CB0 GS1 0 Set by CB0 GS2 0 Set by CB0 GS1 Mode ...
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... When CAS is transmitted from the central office, even though the far end has been muted the near end user (the end which is to receive the caller ID information) may be speaking. Therefore, the CAS must be detected in the presence of near end speech, noise or music. Failure to detect the CAS and reply with ACK within a defined interval is known as ‘ ...
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MT88E46 demodulation is available only connection. The CAS detector operates in ‘on hook mode’ and ‘off hook mode’ using different algorithms optimized for the CPE states. On hook mode is available only at the Tip/Ring connection, while off hook mode ...
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Data Sheet In Table 3 (talkoff results) column 3, the result was obtained using pre-emphasized speech as both the near end and far end speech sources pessimistic, as recognized in SR-TSV-002476, because in reality the pre- emphasis originally ...
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MT88E46 GS1 GS1 op-amp configured as in Figure IN2+ IN2- GS2 Figure 5 - GS2 Op-Amp Connected as GS1 Voltage Follower CAS Detection When CAS detection is selected, the dual purpose DR/ DET pin is the DET ...
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Data Sheet CPE shall immediately become the ACK-Sender, go off hook no later than 35 ms after the start of the line HIGH state, complete the CAS-ACK handshake, and remain as ACK-Sender for the duration of the call. This situation ...
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MT88E46 byte DR goes low to indicate that a new byte has become available. The microcontroller applies pulses at the DCLK input pin to read the register contents serially out of the DATA pin (see Figure 15). Internal to the ...
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Data Sheet Resonance Mode: Parallel Load Capacitance: 18pF 150 Ω Maximum Series Resistance: Maximum Drive Level e.g. CTS MP036S Alternatively an external clock source can be used. In which case the OSC1 pin should be driven directly from ...
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MT88E46 TIP RING Microcontroller = From Microcontroller (FSK Interface Mode 1 selected) R13 is required only if both FSK interface mode 0 and power down features are used. Unless stated otherwise, ...
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Data Sheet 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.63095 0.60 3.0 Figure 9 - GS1 and GS2 Gain Ratios as a Function of Nominal Vdd Gain Setting Resistor Calculation for Nominal Vdd between 3 and 5V • For ...
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MT88E46 Absolute Maximum Ratings* - Parameter 1 Supply voltage with respect to Vss 2 Voltage on any pin other than supplies 3 Current at any pin other than supplies 4 Storage Temperature * Exceeding these values may cause permanent damage. ...
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Data Sheet † DC Electrical Characteristics Characteristics DCLK DATA Output Low Sink 8 DR/DET Current CD IN1+ IN1- IN2+ IN2- 9 Input Current DCLK CB0 CB1 CB2 10 Output Voltage V REF 11 Output Resistance †DC Electrical Characteristics are over ...
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MT88E46 † AC Electrical Characteristics Characteristics 1 Accept Signal Level 2 Bell 202 Format Reject Signal Level 3 Transmission Rate Mark and Space Frequencies Bell 202 1 (Mark) Bell 202 0 (Space) 4 CCITT V.23 1 (Mark) CCITT V.23 0 ...
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Data Sheet AC Electrical Characteristics † Characteristics 1 Rise time 2 DR Fall time 3 Low time 4 Rate DATA 5 Input FSK to DATA delay 6 Rise time 7 Fall time DATA DCLK 8 DATA to DCLK delay 9 ...
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MT88E46 AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels Characteristics 1 CMOS Threshold Voltage 2 Rise/Fall Threshold Voltage High 3 Rise/Fall Threshold Voltage Low DATA DCLK Figure 10 - DATA and DCLK Mode 0 Output Timing DR DCLK 18 ...
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Data Sheet CAS DET (Output) start TIP/RING stop t IDD start DATA (Output) stop DCLK (Output (Output) Note: ...
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MT88E46 TIP/RING 1st Ring Ch. seizure B A PWDN Note 2 (Note OSC2 FSKen (Note (Note 5) DCLK DATA Figure 16 - Application Timing: Bellcore On-Hook Data Transmission Associated with Ringing, e.g. Calling Notes: ...
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Data Sheet CPE goes off-hook TIP/RING CAS A PWDN Note 1 (Note 6) Off Hook CASen (Note 6) FSKen Note 2 (Note OSC2 t DET2 DET (Note (Note 7) DCLK DATA Figure 17 - ...
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