參數(shù)資料
型號： PCD3330-1
廠商： NXP Semiconductors N.V.
英文描述： Multistandard repertory dialler/ringer with EEPROM
中文描述： 多標準匯編撥號器/帶有EEPROM鈴聲
文件頁數(shù)： 7/32頁
文件大?。?/td> 152K
代理商： PCD3330-1
1997 Jan 15
7
Philips Semiconductors
Product specification
Multistandard repertory dialler/ringer with
EEPROM
PCD3330-1
It pulses a calibrated FLASH or register recall pulse
(if selected) when the keyboard input FLASH is pressed.
5.1.11
V
DD
AND
V
SS
V
DD
and V
SS
are the supply terminals.
5.1.12
TONE, DTMF
OR RINGER TONE OUTPUT
In DTMF dialling mode the dual tones which are provided
at the output TONE are filtered by an on-chip switched
capacitor filter, followed by an active RC low-pass filter.
Therefore, the total harmonic distortion of the DTMF tones
fulfils the CEPT recommendations. An on-chip reference
voltage provides output tone levels independent of supply
voltages. The impedance is 100
typically.
In ringer mode this TONE output can be used for
generating the ringer output tones. Whether this TONE
output or the special RTO (ringer tone) output is used is
selected via EEPROM.
5.1.13
PD/DTMF,
PULSE
/
TONE MODE SELECTION
To select the dialling mode, this input PD/DTMF must be
connected to V
DD
or V
SS
.
PD/DTMF = HIGH (V
DD
) = DTMF mode.
PD/DTMF = LOW (V
SS
) = pulse mode.
The PCD3330-1 accept the information also during
manual dialling. Switching the input to pin PD/DTMF
changes the dialling mode after finishing the digit in
progress.
5.1.14
RVOL1
AND
RVOL2/LSE,
RINGER VOLUME
OUTPUTS
The RVOL1 and RVOL2 outputs can be used to control the
ringer output volume in four steps. The volume can be
changed via keyboard during ringing or conversation
mode (off-hook). The selected output level is stored in
EEPROM.
During on-hook dialling the RVOL2 output becomes the
LSE output for switching the listening-in amplifier.
When the on-hook dialling option is not selected and the
microphone mute option is active output LSE change to a
microphone mute which is controlled by the M-key.
After off-hook this output is HIGH and will toggle by every
press off the M-key.
5.1.15
EARTH, a/b
LINE TO EARTH CONNECTION
The EARTH output drives an external switching transistor.
which connects the a- or b-line to earth.
It pulses a calibrated EARTH pulse (if selected) when the
keyboard input FLASH is pressed.
5.2
Keyboard
The PCD3330-1 is programmed to work with various
keyboards which can be connected to the sense column
inputs COL1 to COL6 and the scanning row outputs
ROW1 to ROW6. In this specification four examples are
given:
Figure 2. The simplest keyboard. All basic functions are
available but only 2-key abbreviated dialling
(MEM + digit) is possible.
Figure 3. As Fig.2 but with 3 extra 1-key abbreviated
dialling keys.
Figure 4. As Fig.2 but the 10 repertory numbers can be
reached via M0 to M9 with 1-key abbreviated dialling.
Figure 5. The most complex keyboard. A second
possibility for column 4 exists. This column can be
selected via EEPROM.
Keyboard entries are valid 20 ms (debounce time) after
the leading edge of a keyboard entry.
相關PDF資料
PDF描述
PCD3330-1P Multistandard repertory dialler/ringer with EEPROM
PCD3330-1T Multistandard repertory dialler/ringer with EEPROM
PCD3354AH 8-bit microcontrollers with DTMF generator and 256 bytes EEPROM
PCA3354CH 8-bit microcontrollers with DTMF generator and 256 bytes EEPROM
PCD3354A 8-bit microcontrollers with DTMF generator and 256 bytes EEPROM
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PCD3330-1P 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard repertory dialler/ringer with EEPROM
PCD3330-1T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard repertory dialler/ringer with EEPROM
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PCD3331-1T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC
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