W91520N Datasheet, PDF (6/16 Pages) Winbond – TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

W91520N SERIES
b. If the dialing D1 to Dn is finished, pressing the R key will cause the pulse output pin
of
to
go low for 2.2 seconds break time and 0.6 seconds pause time will automatically be added.
c. If the pulses of the dialed digits D1 to Dn have not finished, R will be ignored.
d. The redial function by R key has no break time (2.2 sec.) if it is the first key-in after off-hook.
e. The R key uses the same redial buffer as the redial function by R/P1 or R/P2 key,
the
and it is active during normal dialing or repertory dialing.
Access Pause
OFF HOOK (or ON HOOK & _HFI ¡õ
), D1 , D2 , R/P , D3 , ..., Dn
1. The pause function is executed in normal dialing, redial dialing, or memory dialing.
2. The pause duration of 2.0 or 3.6 seconds per pause is selected by keypad, but only one pause time
can be stored in memory
3. A detailed timing diagram for the pause function is shown in Figure 5.
Pulse-to-tone (*/T)
OFF HOOK (or ON HOOK & _HFI ¡õ
), D1 , D2 , ..., Dn , */T
, D1'
, D2' , ..., Dn'
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause (2.0 sec. or 3.6 sec.), D1', D2', ..., Dn'
(Pulse)
(Tone )
2. If the mode switch is set to tone mode, then the output signal will be:
D1, D2, ..., Dn, *, D1', D2', ..., Dn'
(Tone)
(Tone)
3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse
mode only by going on-hook.
4. The pulse-to-tone function timing diagram is shown in Figure 6.
Save
OFF HOOK (or ON HOOK & _HFI ¡õ ), D1 , D2 , ..., Dn , SAVE
1. D1, D2, ..., Dn will be dialed out.
2. If the sequence of the dialed digits D1, D2, ..., Dn has not
SAVE will be ignored;
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