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參數資料
| 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： | 6/32頁 |
| 文件大小： | 152K |
| 代理商： | PCD3330-1 |
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1997 Jan 15
6
Philips Semiconductors
Product specification
Multistandard repertory dialler/ringer with
EEPROM
PCD3330-1
5
FUNCTIONAL DESCRIPTION
5.1
Inputs/Outputs
5.1.1
COL1
TO
COL6,
KEYBOARD INPUTS
The sense column inputs COL1 to COL6 and the scanning
row outputs ROW1 to ROW6 can be directly connected to
several keyboard layouts, up to a maximum 6
×
6 single
contact keyboard matrix.
Four of the sense columns are used to store the contents
of the EEPROM in the factory (see Section 5.3).
5.1.2
DMO,
DIAL MODE OUTPUT
This output is HIGH during the make and break times in
pulse dial mode. Its function is to lower the DC line voltage
during these pulses.
This output is LOW during DTMF dialling, during the
inter-digit-pause in pulse dial mode and during
conversation mode.
5.1.3
HOOK,
ON
/
OFF HOOK DETECTION INPUT
If inputs CE and HOOK are both HIGH then the
conversation, programming or dialling mode is selected.
Switching the HOOK input LOW longer than the
reset-delay-time results in switching to the standby mode.
If CE = HIGH and HOOK = LOW the PCD3330-1 is in the
ringer mode.
5.1.4
XTAL1
AND
XTAL2,
OSCILLATOR INPUT
/
OUTPUT
Time base for the PCD3330-1 is a crystal-controlled
on-chip oscillator which is completed by connecting a
3.579545 MHz crystal or ceramic resonator (PXE)
between XTAL1 and XTAL2. The XTAL2 is the oscillator
output and can be used as driver for another oscillator
input. A low-cost quartz crystal from Philips (code number.
4322 143 04401) is available, specially for telephony
applications.
The oscillator starts when V
DD
reaches the operating
voltage level and CE = HIGH.
5.1.5
RESET,
RESET INPUT
When the RESET pin is connected to V
SS
, a reset is
generated by an internal power-on-reset circuit, which
produces an internal reset pulse every time that the supply
voltage V
DD
crosses the power-on-reset voltage level
(typ. 2.0 V).
Depending on the application it can be necessary to
generate a reset via an external circuit (e.g. an external RC
network). When the RESET input becomes HIGH it
initializes the IC.
The RESET-pin should not be left open (not-connected) in
any circumstances.
5.1.6
CE/RF,
CHIP ENABLE AND RINGER
-
FREQUENCY
DETECT INPUT
As chip enable input (active HIGH) it is used to initialize
part of the system, to switch from standby to the ringer or
conversation, programming or dialling mode and to detect
line breaks.
As ringer-frequency input it measures the time between
two LOW-to-HIGH transitions, thus measuring the ringer
frequency.
5.1.7
ROW1
TO
ROW6,
KEYBOARD OUTPUTS
The scanning row outputs ROW1 to ROW6 and the sense
column inputs COL1 to COL6 can directly be connected to
several keyboard layouts (max. a 6
×
6 single contact
keyboard matrix).
5.1.8
MUTE,
MUTE OUTPUT
The MUTE output is used during dialling. In the
PCD3330-1 the MUTE output has four different selectable
options:
M1, normally LOW, but HIGH during inter-digit-pause
and make/break in pulse dial mode, during tone-on and
tone-off in DTMF mode, and during flash or earth
M1, the inverted signal of M1
M2, normally LOW, HIGH during make/break in pulse
dial mode, during tone-on in DTMF mode, and during
flash or earth
M2, the inverted signal of M2.
Each time the M-key on the keyboard is pressed the MUTE
output goes to its inverted state.
5.1.9
RTO,
RINGER TONE OUTPUT
This is the special ringer output. When this output is
selected the output of the internal tone generators is not
connected to the TONE output but to this RTO output.
The ringer output signal has a peak to peak square output
voltage of V
DD
V
SS
(this is used with a PXE transducer).
5.1.10
DP/FL,
PULSE DIALLING AND REGISTER RECALL
OUTPUT
The DP/FL output drives an external switching transistor in
pulse dial mode.
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| PCD3330-1P | Multistandard repertory dialler/ringer with EEPROM |
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| PCA3354CH | 8-bit microcontrollers with DTMF generator and 256 bytes EEPROM |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCD3330-1D-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
| 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 |
| PCD3331-1P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| 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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