Sames SA2532 Скачать руководство пользователя страница 18 | Manualshive

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Sames SA2532 Скачать руководство пользователя страница 18

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SA2532

sames

Note 1:

The values are valid during automatic dialling and are minimum values during
manual dialling, i.e. the tones will continue as long as the key is depressed.

Note 2:

The rise time is the time from 10% of final value until the tone amplitude has reached
90% of its final value.

Note 3:

Relative to high group.

Note 4:

The FCI circuit is reset by POR and HS/DP pulled high (off-hook). After a reset the
FCI circuit is in a standby state. A positive edge on FCI will start a 73ms timer and
the frequency discrimination is initiated. Whenever a period of the ring signal is
missing, the timer is reset. When a valid ring signal is present for

≥

73ms, the

melody generator is started and is directly controlled by the ring signal. This
condition will remain until a new reset.

Note 5:

This does not include the frequency deviation of the ceramic resonator.

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Содержание SA2532

Страница 1: ...e n LD MF switchable dialling n On chip MF filter CEPT CS 203 compat ible n 3 tone melody generator with selectable repetition rates 1 22 GENERAL DESCRIPTION The SA2532 is a CMOS integrated circuit th...

Страница 2: ...Voltage Supply This is the supply pin for the circuit 26 VSS Negative Power Supply 8 MO Melody Output Pulse Density Modulated output of the melody generator for tone ringer At high impedance when not...

Страница 3: ...Options Available options are for 600 and 1000 When the 1000 option is selected then a capacitor may be added to the circuit at pin CI to add a reactive element and make the output impedance complex O...

Страница 4: ...eturn loss and side tone with one common ground A good side tone cancellation is achieved by using the following equation ZBAL R5 ZLINE R1 The side tone cancellation signal is applied to the STB input...

Страница 5: ...inhibited Until new entries 32 digits and further entries will be buffered in a First In First Out Memory FIFO Post dialled digits i e digits manually entered after LNR has been invoked are not stored...

Страница 6: ...ne Generator creates 12 Tones in compliance with CCITT Recommenda tion Q23 Signal levels are altered by Mask Option High group frequencies have a level 2 6dB higher than those of the Low Group Details...

Страница 7: ...signals When a valid ring signal is present for 73ms continuously the melody generator is activated and remains active as long as the ring signal is present Once the melody generator has been started...

Страница 8: ...8 22 SA2532 sames TYPICAL APPLICATION Only the components necessary for presenting the complete functions of the SA2532 are included FIGURE 3...

Страница 9: ...sames SA2532 9 22 FEATURE PHONE APPLICATION Only the components necessary for presenting the complete functions of the SA2532 are included FIGURE 4...

Страница 10: ...ized out of consideration for the human factor in order to meet the user s expectations be easy to learn and relearn not invoke any automatic functions which the user doesn t expect protect the user f...

Страница 11: ...sames SA2532 11 22 Privacy Mute...

Страница 12: ...12 22 SA2532 sames Temporary MF FIFO Pressing any other key does not change the state EXIT FIFO...

Страница 13: ...sames SA2532 13 22 TIMING DIAGRAMS MF Dialling LD Dialling LD Dialling with Access Pause...

Страница 14: ...ating Conditions SupplyVoltage SpeechMode 4V VDD 5V Oscillator Frequency Resonator Murata CSA 3 58M G312AM 3 58 MHz OperatingTemperature 25 Cto 70 C This voltage is generated internally DC Characteris...

Страница 15: ...drive 20 dB tATTACK Attack Time 30 s 6dB tDECAY Decay Time 20 ms 6dB ZIN Input Impedance M1 M2 20 k AMUTE Mute Attenuation Mute activated 60 dB VNO Noise Output Voltage 72 dBmp VFC Unwanted Frequency...

Страница 16: ...Bmp VFC Unwanted Frequency 50 Hz 20 kHz 60 dBm Components ZIN Input Impedance RI 8 k VIN RI Input Voltage Range RI 2 VPEAK ST Sidetone Test Circuit Fig 5 AST Sidetone Cancellation VRI 0 5VRMS 26 dB VI...

Страница 17: ...ms tPFP Post Flash Pause 2 9 3 0 3 1 sec tAP Access Pause Period SA2532A U 2 9 3 0 3 1 sec SA2532C 5 8 6 0 6 2 sec Tone Ringer VMO Melody Output Level PDM tMD Melody Delay 10 ms F1 Frequency 1 1020 1...

Страница 18: ...e FCI circuit is reset by POR and HS DP pulled high off hook After a reset the FCI circuit is in a standby state A positive edge on FCI will start a 73ms timer and the frequency discrimination is init...

Страница 19: ...sames SA2532 19 22 Test Circuit Figure 5...

Страница 20: ...hm Level Period Pause SA2532A P 600 6 8dBm 280ms 3s 28 pin DIP SA2532A S 600 6 8dBm 280ms 3s 28 pin SOIC SA2532C P 1000 6 8dBm 280ms 6s 28 pin DIP SA2532C S 1000 6 8dBm 280ms 6s 28 pin SOIC SA2532U P...

Страница 21: ...sames SA2532 21 22 NOTES...

Страница 22: ...te SAMES does not undertake to inform any recipient of this document of any changes in the information contained herein and SAMES expresslyreservestherighttomakechangesinsuchinformation withoutnotific...

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