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L3916AD Datasheet

  • L3916AD

  • SPEECH AND 14 MEMORY DIALER WITH LED DRIVER

  • 14頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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L3916A
FUNCTION PIN DESCRIPTION
(continued)
To dial a number from repertory memory (HKS
must be low), enter the following:
MEM (Location 0-9) or E1-E3
To save the last number dialed, enter the follow-
ing:
PROG MEM (location 0-9) or E1-E3
HOOK FLASH
D1
FLASH
D2
...etc
Hook flash may be entered into the dialed se-
quence at any point by keying in the function key,
FLASH. Flash consists of a timed break of
585ms, 300ms or 100ms depending on the Mask
option. When a FLASH key is pressed, no further
key inputs will be accepted until the hookflash
function has been dialed. The key input following
a FLASH will be stored as the initial digit of the
new number, overwriting the number dialed be-
fore the FLASH, unless it is another FLASH.
FLASH key pressed immediately after hookswitch
or LND will not clear the LND buffer unless digits
are entered following the FLASH key.
Example:
FLASH
LND not cleared
LND
FLASH
LND not cleared
LND
FLASH
D1
D2
LND buffer will contain D1, D2
PAUSE/LAST NUMBER DIALED
If the PAUSE/LND key is pressed right after off
hook or FLASH key, it is considered as LND, if it
is pressed after a digit, it will be considered as
PAUSE.
LAST NUMBERED DIALED
OFF-HOOK PAUSE/LND or FLASH PAUSE/LND
Last number dialing is accomplished by entering
the PAUSE/LND key.
PAUSE
OFF-HOOK D1 PAUSE/LND D2
...etc
A pause may be entered into the dialed sequence
at any point by keying in the special function key,
PAUSE/LND. Pause inserts a 3.1 second delay
into the dialing sequence. The total delay, includ-
ing pre-digit and post-digit pauses is shown in Ta-
ble 3.
Table 3:
Special Function Delays
Each delay shown below represents the time re-
quired after the special function key is depressed
until a new digit is dialed. The time is considered
鈥滷IRST鈥?key if all previous inputs have been com-
pletely dialed. The time is considered 鈥滱UTO鈥?if in
redial, or if previous dialling is still in progress.
Function
SOFTSW ITCH
PAUSE
First/Auto
FIRST
AUTO
FIRST
AUTO
Delay (seconds)
Pulse
0.2
1.0
2.6
3.4
3.0
3.1
Tone
SOFTSWITCH FUNCTION USING TONE/PULSE
MODE SWITCH
When dialing in Pulse mode after off-hook,
switching TONE/PULSE mode switch from Pulse
to Tone will cause the device to change the sig-
naling mode into tone signal and store the soft-
switch function in the LND memory for redial. To
redial the softswitch function (mixed mode dialing)
in the pulse mode after going on-hook and back
to off-hook, you have to switch the TONE/PULSE
mode switch back to pulse mode either before go-
ing on-hook or after off-hook or during on-hook.
Subsequent mode change from Tone to Pulse will
change the signaling mode to pulse dialing se-
quence but this mode change will not be stored in
.the LND memory.
When dialing in Tone mode after off-hook, a
switching of TONE/PULSE mode Switch from
Tone to Pulse will cause the device to change the
signaling mode into pulse mode but this mode
change will not be stored in the LND memory.
When LND key is pressed in Tone mode after go-
ing off-hook, the device will output all tone sig-
nals.
A pacifier tone of 75ms is provided after 32ms de-
bounce time when switching from Pulse to Tone
mode.
Redial by the LND key will repeat the mixed dial-
ing sequence in Pulse mode.
5/14

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