- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381308 > AS2578BN (AUSTRIAMICROSYSTEMS AG) TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS PDF資料下載
參數(shù)資料
| 型號： | AS2578BN |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大小： | 280K |
| 代理商： | AS2578BN |
Data Sheet
Rev. 3
3
AS2578 /B
March 1997
Pin Description cont′d
Pin #
Symbol
Function
18
DPN
Dial Pulse Output
This is the push-pull output for controlling the hook-switch transistor. It is low during on-
hook and break periods and high during off-hook (see timing diagrammes).
19
GL
Ground Loop Output
This push-pull output is high during ground loop
20
V
DD
Positive Power Supply
21
22
23
24
R4
R3
R2
R1
Keyboard Rows
25
C5
Keyboard Column (AS2578)
This column is for the memory keys
C6
Keyboard Column (AS2578B)
This column is for centrex keys (A - D keys). Automatic pause insertion and Temporary
MF select 1 are fixed enabled (AP open)
26
AP
Access Pause Select Input (AS2578)
This input is used to select the automatic access pause insertion or sliding cursor (no
centrex keys):
AP pin
High
Open
Low
Function
Sliding cursor enabled
Automatic pause insertion enabled
Sliding cursor and pause disabled
Temporary MF select 2
Temporary MF select 1
Temporary MF select 1
C5
Keyboard Column (AS2578B)
This column is for the memory keys
27
MV
Melody Volume Select Input
This input is used to select the volume of the melodies in 4 steps by connecting the MV
pin to row 1, 2, or 3. Leaving the pin open is the default setting (max. volume).
28
RR
Repetition Rate Select Input
This input is used to select the repetition rate of the melodies. 4 different rates can be
selected by either leaving the pin open (default) or connecting it to column 1, 2, or 3.
Power On Reset
The on chip power on reset circuit monitors the supply
voltage (V
). As long as V
remains below the internal
reference voltage, Vref (typically 1.1V), the oscillator is
inhibited. When V
rises above Vref (t
= 1
μ
s/V to 50
ms/V), a reset signal is generated to assure correct start-
up.
Initial Setup
A low to high transition on the CE input will initiate an
automatic setup, i.e. the pin options are scanned and
(when an EEPROM is connected) the stored LM codes
and melody settings are read from the EEPROM. This is
done independently of the hook state (see timing
diagrammes).
Note: "Open" means
≥
100 k
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2578BP | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578N | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578P | TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2590 | LC DISPLAY DRIVER WITH 18 DIGITS, 6 SYMBOLS AND CLOCK/TIMER |
| AS2590N | LC DISPLAY DRIVER WITH 18 DIGITS, 6 SYMBOLS AND CLOCK/TIMER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2578BP | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578N | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS2578P | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TELEPHONE CONTROLLER WITH 13 MEMORIES AND 2-WIRE BUS |
| AS257R6FLF | 制造商:TT Electronics / IRC 功能描述:AS257R6FLF |
| AS257R6HLF | 制造商:TT Electronics / IRC 功能描述:AS257R6HLF |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。