W91620 Datasheet, PDF (8/16 Pages) Winbond – 10-MEMORY TONE/PULSE DIALER WITH TWO-STAGE REDIAL FUNCTION

W91620 SERIES
Pulse-to-tone (P→T)
1. OFF HOOK , D1 , D2 , ..., Dn , P→T , D1' , D2' , ..., Dn'
a. If the mode switch is set to pulse mode, then the output signal will be as follows:
D1, D2, ..., Dn, no pause, D1', D2', ..., Dn'
(Pulse)
(Tone)
In this case, the device can be reset to pulse mode only by going on-hook, because tone mode
remains enabled after the digits have been dialed out.
b. If the mode switch is set to tone mode, then the output signal will be as follows:
D1, D2, ..., Dn, no pause, D1', D2', ..., Dn'
(Tone)
(Tone)
c. The P→T key may be pressed before the first sequence is dialed out completely.
2. OFF HOOK , R
a. If the mode switch is set to pulse mode, then the output signal will be as follows:
D1, D2, ..., Dn
(Pulse)
b. In the first redial operation, only the digits before the tone key are dialed out.
R (2nd)
D1', D2', ..., Dn' are dialed out.
(Tone)
c. In the second redial operation, the digits after the tone key are dialed out.
3. OFF HOOK , A , Ln
a. The P→T key can be stored in memory as a digit. The digits after the P→T key are also sent in
repertory dialing.
b. The P→T key does not stop dialing (no pause).
c. The number stored in memory location Ln will be transferred to the redial register, but the P→T
function will not be executed during redialing if the P→T key has been stored in location Ln.
d. The P→T function timing diagram is shown in Figure 4.
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