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參數(shù)資料
| 型號(hào)： | AS2534ET |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁(yè)數(shù)： | 8/25頁(yè) |
| 文件大?。?/td> | 270K |
| 代理商： | AS2534ET |
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8
Rev. 7
July 1998
Data Sheet
AS2533...6
DTMF
The DTMF generator provides 8 frequencies, namely:
Low group
Digit 1-2-3-A
Digit 4-5-6-B
Digit 7-8-9-C
Digit * -0-# -D
697 Hz
770 Hz
852 Hz
941 Hz
High group
Digit 1-4-7- *
Digit 2-5-8-0
Digit 3-6-9-#
Digit A-B-C-D
1209 Hz
1336 Hz
1477 Hz
1633 Hz (not AS2535)
The MF output level can be set with an external voltage
divider on pin MFL.
Voltage at pin MFL (2)
1.50 V (A
GND
)
1.27 V
1.15 V
1.03 V
0.90 V
0.70 V
0.54 V
0.42 V
0.30 V
0.18 V
0.00 V (V
SS
)
(Z
LINE
= 600 ohm)
DTMF Level (Low Group)
-4.0 dBm
-5.2 dBm
-6.4 dBm
-7.6 dBm
-8.8 dBm
-10.0 dBm
-11.2 dBm
-12.4 dBm
-13.6 dBm
-14.8 dBm
-16.0 dBm
The preemphasis is 2.6 dB.
The MF tones are according to CEPT recommendations.
Tone Ringer (Melody/Volume)
The three basic frequencies of the melodies are:
F1 = 800 Hz, F2 = 1067 Hz, and F3 = 1333 Hz (
±
5%).
The repetition rate and the volume of the tone ringer
melodies can be programmed by pressing
P/M
and
#
followed by a digit as follows (not AS2534E):
Digit Repetition Rate
1
1 time (50 ms pause)
2
1 time (50 ms pause)
3
1 time (50 ms pause)
4
4 times
5
4 times
6
4 times (default)
7
10 times
8
10 times
9
10 times
0
None
Volume
- 16 dB
- 7 dB
0 dB (max.)
- 16 dB
- 7 dB
0 dB (max.)
- 16 dB
- 7 dB
0 dB (max.)
Off
The procedure is ended by repressing the
P/M
key.
The default setting is digit 6, i.e. after a power on reset
the device will start up with repetition rate 4 and maximum
volume. If digit
0
is programmed, the tone ringer will be
turned off until next off-hook where it will turn back to the
last setting before
0
. The programmed settings are
stored in the on chip RAM.
Repetition rate means that a sequence of 6 frequencies
is repeated 1, 4 or 10 times within 1 second.
The sequence of the frequencies is controlled by the
sequence register as follows:
Sequence
F1 F2 F3 F1 F2 F3 …
The AS2534E is fixed to default settings and can not be
programmed to other settings.
Pacifier Tone
By MF dialling the DTMF tones are provided to the
earpiece as comfort tone.
During programming a key entry is acknowledged by a
pacifier tone of 1477 Hz. The level of the pacifier tone is
approximately 60 mV at the RO output. The duration is
40 ms after every key entry in programme mode.
When terminating the programme mode with the
P/M
key an acknowledge tone of 140 ms is provided. An
invalid key entry, however, will cause a termination of
the programme mode indicated by a rejection tone of 4
times 40 ms with 28 ms pauses between the tone bursts.
Ring Frequency Discrimination
The ring frequency discriminator assures that only signals
with a frequency between 13Hz and 70 Hz are regarded
as valid ring signals. The time for recognising a valid ring
signal is 1/f seconds, where 'f' is the ring frequency.
When a valid ring signal is present for 73 ms continuously,
the melody generator is activated and remains active as
long as the ring signal is present.
Once the melody generator has been started, the ring
signal is continuously monitored and the melody
generator is instantly turned on or off according to the
momentary presence of a valid or unvalid ring signal
respectively (until next POR or off-hook).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2535 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535T | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2536 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2536P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2534RF | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Multi-Standard CMOS Telephone IC for Basic Telephones |
| AS2534RT | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Multi-Standard CMOS Telephone IC for Basic Telephones |
| AS2534RW | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Multi-Standard CMOS Telephone IC for Basic Telephones |
| AS2534U | 功能描述:IC TELEPHONE CMOS MULTIFU 28SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:* |
| AS2534UT | 制造商:AMS 功能描述:AS Series 3.8 to 5V Multi-Standard CMOS Telephone IC for Basic Telephone SOIC-28 |
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