AG8888
CALL WAITING DECODER
WAVE FORM TIMING
DO timing:
alert
tone
(~80ms)
off hook
engaged call
line event normal on hook
Tvd
Tinvd
Tfinvd
CAS
Tfvd
Tdvd
Tvd=Tfvd+Tdvd
Tinvd=Tfinvd+Tdinvd
Tdinvd
OSC timing:
power off
OSC off
power on
Power
on/off
Tosc
OSC on
OSCI
(OSCO)
Sym.
Tfvd
Tfinvd
Tdvd
Tdinvd
Tvd
Description
Min.
Typ.
6
6
36
20
42
26
80
Max.
Unit
ms
ms
ms
ms
ms
ms
ms
filter output signal valid delay
filter output signal invalid delay
digital delay of valid signal
digital delay of invalid signal
total delay of valid signal
total delay of invalid signal
input alert tone length
Tinvd
alert
tone
Tosc
(2130 ,2750 Hz @ -20dBm )
Oscillator enable delay time
10
ms
Note: detected alert tone length shown above is assumed that no speech signals input.
This test is under alert tone signal = -22dBm (600Ω)
* This specification are subject to be changed without notice.
8.8.2000
5
ELAN [ ELAN MICROELECTRONICS CORP ]
