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* This specification are subject to be changed without notice.

AG8889

CALL WAITING DECODER

8.8.2000

APPLICATION CIRCUIT 1

When PWD pin (pin 6) is controlled by MCU or external hook detect circuit, the users can use the following
application. (pin6 is connected to control pin of MCU or hook detect output)

TIP

VREF

GND

8-bit

MCU

TIP

RING

OSCI

OSCO

0.01u

430k

250V

0.1u

VDD 14

OPO

470k

430k

51k

39k

62k

39k

47p

2 RING

PWD

3.58MHz

33p

KBR-3.58MSB202

KYOCERA

33p

Note :

KBR-3.58MSB202 tolerrance :

-0.10% ~+0.15%

33p

Содержание AG8889

Страница 1: ...signal on the data pins for micro controller II FEATURES Compatible with Bellcore special report SR TSV 002476 3 6V 6 0V supply voltage Call Waiting 2130Hz plus 2750Hz Alert Signal Detector Good talkd...

Страница 2: ...mportant calls while engaged in a current call The CALLWAITING DECODER can detect CAS Call Waiting Alerting Signal 2130Hz plus 2750Hz and generate a valid signal on the data pin The call waiting decod...

Страница 3: ...ge 1 5 V VIH high level input voltage 3 5 V VOL low level output voltage load 1mA 0 4 V VOH high level output voltage load 1mA 4 6 V Note 1 both tones in the composite signal have equal amplitude 2 to...

Страница 4: ...valid delay 6 ms Tfinvd filter output signal invalid delay 6 ms Tdvd digital delay of valid signal 36 ms Tdinvd digital delay of invalid signal 20 ms Tvd total delay of valid signal 42 ms Tinvd total...

Страница 5: ...detect circuit the users can use the following application pin6 is connected to control pin of MCU or hook detect output TIP VREF GND 8 bit MCU TIP RING OSCI OSCO 0 01u 0 01u 430k 250V 250V 0 1u VDD 1...

Страница 6: ...nnected to the ground the users have to use the following application pin6 is connected with a capacitor to VDD and connected with a resistor to the ground TIP VREF GN D 8 bit MCU TIP RING OSCI OSCO 0...

Страница 7: ...the pin to bypass to the respective GND s 2 PWD pin By connecting PWD pin to GND normal mode is obtained In the normal mode the oscillator is activated then ready to decode CAS signal and the chip co...

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