U9131X

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 11

www.unisonic.com.tw

QW-R502-A34.a



FUNCTIONAL DESCRIPTION

Keyboard Operation

C1

C2

C3

C4

R1

1

2

3

R2

4

5

6

F

R3

7

8

9

P→T

R4

*

0

#

R/P

* R/P：Redial and pause function key

* F：Flash key

* P→T：Pulse mode to tone mode

Normal Dialin

1. D1, D2, … , Dn will be dialed out.

2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits.

Redialing

The RP Key can execute redial function only as the first key-in after off-hook; otherwise, it will execute pause

function.

Access Pause

1. The pause function can be stored in memory.

2. The pause function is executed in normal dialing or memory dialing.

3. The pause function timing diagram is shown in Figure 3.

Pulse-To-Tone (P→T)

1. If the mode switch is set to pulse mode, then the output signal will be:

D1, D2, …, Dn, Pause, D1’, D2’, …, Dn’

(Pulse)

(Tone)

2. If the mode switch is set to tone mode, then the output signal will be:

D1, D2, …, Dn, P→T D1’, D2’, …, Dn’

(Pulse)

(Pause) (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 P→T function timing diagram is shown in Figure 4.

Flash

1. Flash key can be stored as a digit in memory.

2. The system will return to the initial state after the break time is finished.

3. The flash function timing diagram is shown in Figure 5.