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HT9315BL Datasheet(PDF) 9 Page - Holtek Semiconductor Inc |
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HT9315BL Datasheet(HTML) 9 Page - Holtek Semiconductor Inc |
9 / 27 page HT9315 Series Rev. 1.20 9 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 No No Keyboard operated IDD lock No Yes Lock 0 Yes No Lock 0, 9 Yes 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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