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AG8889AP

ELAN Microelectronics Corp
Part Number AG8889AP
Manufacturer ELAN Microelectronics Corp
Description CALL WAITING DECODER
Published Mar 23, 2005
Detailed Description AG8889 CALL WAITING DECODER I. GENERAL DESCRIPTION This is a new version of Call Waiting service decoder on the teleph...
Datasheet PDF File AG8889AP PDF File

AG8889AP
AG8889AP

Overview
AG8889 CALL WAITING DECODER I.
GENERAL DESCRIPTION This is a new version of Call Waiting service decoder on the telephone.
Call Waiting service works by alerting a customer engaged in a telephone call to a new incoming call.
This way the customer can still receive important calls while engaged in a current call.
The Call Waiting decoder can detect dual tone (2130Hz and 2750Hz) alert signal and generate a valid 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 talkdown and talkoff performance Sensitivity compensated by adjusting input OP gain Package series --- 14-pin DIP or 16-pin SOP (150 mil) AG8889AP for 14-pin DIP AG8889N for 16-pin SOP (150 mil) III.
APPLICATION • Feature phones • Cordless phones • Adjunct unit (stand alone) IV.
PIN CONFIGURATION AG8889AP TIP RING OPO VREF NC PWD VSS 1 2 3 4 5 6 7 14 13 12 11 AG8889N VDD DO NC NC NC OSCI OSCO TIP RING OPO VREF NC PWD VSS NC 1 2 3 4 5 6 7 8 16 15 14 13 VDD DO NC NC NC OSCI OSCO NC 10 9 8 12 11 10 9 * This specification are subject to be changed without notice.
8.
8.
2000 1 AG8889 CALL WAITING DECODER V.
FUNCTIONAL BLOCK DIAGRAM OPO TIP RING Tone Filter Detection Block DO VREF Vdd/2 Voltage Reference Clock Generator OSCI OSCO PWD VI.
PIN DESCRIPTIONS Pin TIP RING OPO VREF PWD I/O I I O I Description Tip in should be connected with twisted pair Ring in should be connected with twisted pair Output of OP Amp Reference voltage Vref = 1/2 Vdd This pin is normal low enabling chip on normal operation and ready to detect CAS tone signals.
This active high input sets the chip into power down mode and disable oscillator to save power.
3.
58MHz oscillator in 3.
58MHz oscillator out DO : used as output, this pin determines whether DO signal is valid or not.
High is valid.
Normal low.
Power Ground Non connected OSCI OSCO DO VDD GND NC I O O ...


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