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參數(shù)資料
| 型號(hào)： | LC737212 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Telephone Dialer IC with On-Chip Memory for Push- Button Telephones |
| 中文描述： | 電話撥號(hào)集成電路片上推內(nèi)存按鈕電話 |
| 文件頁數(shù)： | 16/27頁 |
| 文件大小： | 308K |
| 代理商： | LC737212 |
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If the mode is changed after a pulse dialing operation and DTMF data is keyed in, the system does not automatically
insert a pause, but rather outputs the DTMF data as it is keyed in.
The pause key (the R/P key used as the second or later digit) can be used to enter pause data.
If pause data and mode change data (MC) are entered consecutively, the system pauses for 3.9 seconds.
After connecting to the line, the first time the R/P key is pressed, the system will redial the previously entered dialing
data.
3. Memory Output Specifications
The LC737212/M provides five 16-digit memory locations for one touch dialing memory, 20 16-digit memory
locations for quick-dialing memory, a 16-digit buffer memory for store operations, and a 63-digit redialing memory.
A single digit of memory can hold a single dialing data item (1 to 9, 0, *, or #), a single mode change data item
(MC), or a single pause data item (P).
RD memory
The LC737212/M includes a 63-digit buffer memory that also functions as the redial memory, and thus is called the
RD memory. The keyed in input data is stored sequentially in the RD memory.
— Dialing data stored in RD memory is read out at the specified dialing rate and output from the DP or DTMF pin.
— Dialing numbers that exceed 63 digits is possible. The system writes the key data that exceeds 63 digits starting at
the beginning (location 0) of RD memory and outputs that data.
— However, this means that redialing numbers that exceed 63 digits is not possible since the dialing data is not all
correctly retained in RD memory.
Dialing memory (one-touch dialing and quick dialing)
— LC737212 provides five locations (A1 to A5) for one-touch dialing, and 20 locations (M00 to M19) for quick
dialing.
— Each of these dialing memory locations holds 16 digits of dialing data plus the output format (pulse or DTMF) for
the start of the data.
— When a dialing memory location is accessed, its content is copied to RD memory and then the LC737212/M dials
that number by reading it out of RD memory.
— If a number stored as DTMF in dialing memory is read out after a pulse dialing operation, a mode change (MC)
data item is automatically inserted in RD memory.
— After a DTMF signal is output, if data registered as pulse data is read out from a dialing memory, that data will be
output as DTMF signals.
Data store buffer memory
— This memory is used when storing a number in dialing memory.
4. Off-Hook Hold and On-Hook Hold Modes
Pressing the HOLD key switches between off-hook dialing mode and hold (off-hook hold mode).
In hold mode, the HOLD-OUT and SP-CTL outputs are turned on.
Dialing is disabled in hold mode.
It is not possible to hold during dialing.
Placing the phone on hook switches the system from off-hook hold mode to on-hook hold mode.
Lifting the receiver switches the system from on-hook hold mode to off-hook hold mode.
Hold is cleared by a falling edge on the HOLD-OFF IN pin.
— This switches from off-hook hold mode to on-hook dialing mode.
— This also switches from on-hook hold mode to standby mode.
After switching to off-hook hold mode, falling edges on the HOLD-OFF IN pin are not detected for 0.5 second.
5. On-Hook Dialing
Falling edges on the ON-HOOK DIAL IN input switches the system between standby mode and on-hook dialing
mode.
In on-hook dialing mode, the HOOK-CTL and SP-CTL pins output high levels.
It is not possible to hold when the system is in on-hook dialing mode.
Lifting the receiver switches the system to off-hook dialing mode.
No. 5203-16/27
LC737212, 737212M
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC737212M | Telephone Dialer IC with On-Chip Memory for Push- Button Telephones |
| LC73750 | Serial I/O Dialler with Keyboard Input Functions |
| LC73750M | Serial I/O Dialler with Keyboard Input Functions |
| LC7385 | DTMF Receiver |
| LC7385M | DTMF Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC737212M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Telephone Dialer IC with On-Chip Memory for Push- Button Telephones |
| LC73750 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Serial I/O Dialler with Keyboard Input Functions |
| LC73750M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Serial I/O Dialler with Keyboard Input Functions |
| LC73815M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC7385 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DTMF Receiver |
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