MT88L89AC MITEL [Mitel Networks Corporation], MT88L89AC Datasheet
MT88L89AC
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MT88L89AC Summary of contents
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... Ref SS 3V Integrated DTMF Transceiver Advance Information with Adaptive Micro Interface MT88L89AE MT88L89AC MT88L89AS MT88L89AN MT88L89AP The receiver section is based upon the industry standard transmitter converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing ...
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MT88L89 20 1 IN+ VDD 2 19 IN- St/ ESt 17 VRef VSS D2 15 OSC1 OSC2 TONE 8 IRQ/CP R/W/ DS/ ...
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Advance Information Pin Description Pin # Name Positive power supply (3V typ.). Connection. 8,9 3,5, 16, 10- 23- 25 Functional Description The MT88L89 Integrated DTMF Transceiver consists of ...
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MT88L89 F F DIGIT D LOW HIGH 3 697 1209 1 0 697 1336 2 0 697 1477 3 0 770 1209 4 0 770 1336 5 0 770 1477 6 0 852 1209 7 0 852 1336 8 1 ...
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Advance Information signal duration to be recognized by the receiver. A value for C1 of 0.1 µF is recommended for most C1 GTP (R1C1 GTA R = (R1R2) / (R1 ...
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MT88L89 EXPLANATION OF EVENTS A) TONE BURSTS DETECTED, TONE DURATION INVALID, RX DATA REGISTER NOT UPDATED. B) TONE #n DETECTED, TONE DURATION VALID, TONE DECODED AND LATCHED IN RX DATA REGISTER. C) END OF TONE #n DETECTED, TONE ABSENT DURATION ...
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Advance Information The period of each tone consists of 32 equal time segments. The period of a tone is controlled by varying the length of these time segments. During write operations to the Transmit Data Register the 4 bit data ...
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MT88L89 OUTPUT FREQUENCY (Hz) ACTIVE INPUT SPECIFIED ACTUAL L1 697 699.1 L2 770 766.2 L3 852 847.4 L4 941 948.0 H1 1209 1215.9 H2 1336 1331.7 1477 1471.9 H3 1633 1645.0 H4 Table 2. Actual Frequencies Versus Standard Requirements Distortion ...
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Advance Information (DS). When DS is low, Motorola processor operation is selected. Figure 17 shows the timing diagram for the Motorola MC68HC11 (1 MHz) microcontroller. The chip select (CS) input is formed by NANDing address strobe (AS) and address decode ...
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MT88L89 Motorola Intel RS0 R Write to Transmit Data Register Read from Receive Data Register Write to Control Register Read from Status ...
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Advance Information BIT NAME b0 BURST Burst Mode Select. A logic high de-activates burst mode; a logic low enables burst mode. When activated, the digital code representing a DTMF signal (see Table 1) can be written to the transmit register, ...
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MT88L89 C1 R1 DTMF/CP INPUT R2 X-tal DTMF OUTPUT R L Notes: R1 100 374 3 (min 100 ...
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Advance Information A software reset must be included at the beginning of all programs to initialize the control registers after power up. Description: 1) Read Status Register 2) Write to Control Register 3) Write to Control Register 4) Write to ...
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MT88L89 Absolute Maximum Ratings Parameter 1 Power supply voltage Voltage on any pin 3 Current at any pin (Except Storage temperature 5 Package power dissipation * Exceeding these values may cause permanent damage. ...
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Advance Information Electrical Characteristics Gain Setting Amplifier - Voltages are with respect to ground (V Characteristics 1 Input leakage current 2 Input resistance 3 Input offset voltage 4 Power supply rejection 5 Common mode rejection 6 DC open loop voltage ...
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MT88L89 AC Electrical Characteristics Characteristics 1 Accept Bandwidth 2 Lower freq. (REJECT) 3 Upper freq. (REJECT) 4 Call progress tone detect level (total power) † Characteristics are over recommended operating conditions unless otherwise stated ‡ Typical figures are at 25°C, ...
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Advance Information AC Electrical Characteristics Characteristics 1 DS/RD/WR clock frequency 2 DS/RD/WR cycle period 3 DS/RD/WR low pulse width 4 DS/RD/WR high pulse width 5 DS/RD/WR rise and fall time 6 R/W setup time 7 R/W hold time 8 Address ...
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MT88L89 DS Q clk* A0-A15 (RS0) R/W(read) Read Data (D3-D0) R/W (write) Write data (D3-D0 Q).Addr [MC6809 VMA.Addr [MC6800, MC6802] *microprocessor pin Figure 16 - MC6800/MC6802/MC6809 Timing Diagram t is from data to DS ...
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Advance Information ALE P0* A0-A7 (RS0, D0-D3 (Addr ALE.Addr * microprocessor pins Figure 18 - 8031/8051/8085 Read Timing Diagram ALE P0* (RS0, D0-D3 (Addr ALE.Addr * ...
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MT88L89 NOTES: 4-144 ...