HT9315AL datasheet(9/27 Pages) HOLTEK

9 / 27 page

HT9315 Series

Rev. 1.20

October 1, 2002

LOCK function

The function aims to detect locked dialing number to

prevent a long distance call. The dialing output of the

chip is disabled if the first input key after on-off-hook is

the locked number when the lock function is enabled.

The lock function selection is listed below. This function

is implemented on the HT9315xL. The HT9315x does

not support this function.

RK31

RK41

Function

Keyboard operated IDD lock

Yes

Lock 0

Yes

Lock 0, 9

Yes

All keys are locked

Key definition

· 0,1,2,3,4,5,6,7,8,9 keys

These are dialing number input keys for both the pulse

mode and the tone mode operations.

· */T

This key executes the P

®T function and waits a TP®T

duration in the pulse mode. On the other hand, the

*/T

key executes the

* function in the tone mode.

· #

This is a dialing signal key for the tone mode only, no

response in the pulse mode.

· SA

Pressing this key can save the preceding dialing tele-

phone numbers. The saved number is redialed if it is

pressed again. SA will also redial the saved number if

it is the first key pressed at the off-hook state. During

the dialing signal transmission, the SA key is inhibited.

· F

The flash key can be selected as a digit or as a control

key by the option resistors RK13 &RK14. Pressing the F

key will force the PO pin to be low for the TF duration and

is then followed by TFP (sec). TF can also be selected by

RK13,RK14.

· P

Pause key. The execution of this key pauses the out-

put for the TP duration. TP can be selected by RK21.

· R

Redial key. Executes redialing as well as one-key re-

dial function.

· ST

Store key. The execution of this key actuates the store

memory function with (or without) dialing output and it

can store lock number with personal code in IDD lock

operation. During the dialing signal transmission, the

ST key is inhibited.

· R/P

Redial and pause function key. If it is pressed as the

first key after off-hook, this key executes the redial

function. Otherwise, it works as the pause key.

· EM1~EM3

One-touch memory dialing key. For speed-calling

convenience, they provide memory dialing in either

pulse or tone mode.

· A

Auto key. When this key is pressed before pressing

any one of the digital keys (0~9) it executes the

two-touch memory function.

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