AG8888
CALL WAITING DECODER
WAVE FORM TIMING
DO timing:
line event
normal on hook
off hook
engaged call
alert
tone
(~80ms)
Tvd
CAS
Tvd=Tfvd+Tdvd
Tinvd=Tfinvd+Tdinvd
OSC timing:
Tfvd
Tdvd
Tinvd
Tfinvd
Tdinvd
power off
Power
on/off
Tosc
OSC off
power on
OSCI
(OSCO)
OSC on
Sym.
Tfvd
Tfinvd
Tdvd
Tdinvd
Tvd
Tinvd
alert
tone
Tosc
Description
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
(2130 ,2750 Hz @ -20dBm )
Oscillator enable delay time
Min.
Typ.
6
6
36
20
42
26
80
Max.
Unit
ms
ms
ms
ms
ms
ms
ms
ms
10
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
EMC [ ELAN MICROELECTRONICS CORP ]
