W91621 查看數據表（PDF） - Winbond

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W91621

10-MEMORY TONE/PULSE DIALER WITH TWO-STAGE REDIAL FUNCTION

Winbond 

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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