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EM91401D の電気的特性と機能

EM91401DのメーカーはELAN Microelectronicsです、この部品の機能は「TONE/PULSE SWITCHABLE DIALER」です。


製品の詳細 ( Datasheet PDF )

部品番号 EM91401D
部品説明 TONE/PULSE SWITCHABLE DIALER
メーカ ELAN Microelectronics
ロゴ ELAN Microelectronics ロゴ 




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EM91401D Datasheet, EM91401D PDF,ピン配置, 機能
EM9E1M4901140S1ESRERIEIESS
TONE/PULTSOENSEW/PUITLSCEHSAWBITLCEHDAIBALLE EDRIAWLEIRTWHILTHCDLCIDNITNETRERFFAACCEE
AND DUAANDL-DTUOANLE-TOMNEELMOEDLYODGYEGNEENRERAATTOORR
Preliminary
GENERAL DESCRIPTION
The EM91401 is a series of tone/pulse switchable dialers that is composed of T/P dialer. The EM91401 series
provide necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone
(DTMF) dialing, Handfree dialing, keying tone ,and lock functions. The lock function is designed to inhibit toll
dialing operation. Beside this, melody generator, ring detector and SDO (Serial Data Output) functions are
provided in advance version. Melody generator will output dual-tone music in line hold duration. Ring detector
can prevent illegal dialing from pocket dialer. The SDO is designed to drive LCD driver and voice synthesizer.
In this application, the dialing numbers can be displayed on LCD screen with EM32100 ( or EM32116 ).
FEATURES
• Tone/Pulse switchable.
Wide operating voltage from 2.0 V to 5.5 V.
Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.
• Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate,
M/B ratio, Flash time, lock dialing functions.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
• Line hold function is designed for stopping conversation temporality.
• Melody generator provides music on hold function.
• Lock function provides conventionality key lock and password lock operations.
• Ring detector is designed to prevent illegal dialing from pocket dialer.
• A 32-digit LNB (last number) redial memory.
• Keytone function provides rapidly keying recognition.
• Handfree function provides on-hook dialing and speakerphone application.
• Pause and P-T time are fixed to 3.6 seconds.
• Tone duration and inter-tone pause time are fixed to 98 ms.
• Using 3.579545 MHz crystal or ceramic resonator.
• Package forms: PDIP, skinny.
ORDERING INFORMATION
Versions list and function outline
VERSION
LNB
KT
EM91401A
√√
EM91401B
√√
EM91401C
√√
EM91401D
√√
Note : PDP = Pocket Dialer Prevented
HOLD(music)
LOCK
HF SDO(LCD) PDP
√√
√√
* This specification are subject to be changed without notice.
10.1.1997 1

1 Page





EM91401D pdf, ピン配列
EM91401 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
FUNCTIONAL BLOCK DIAGRAMPreliminary
COL1
COL2
COL3
COL4/KT
COL5
XIN
XOUT
Keyboard
interface
(column)
Oscillator
SDO HFO
RMUTE
HDO
Output circuit
XMUTE
Row/Column
programming counter
Memory
(Melody)
latch
&
decoder
D/A
converter
DTMF
ROW1
ROW2
ROW3
ROW4
Keyboard
interface
(Row)
Timing/Control circuit
Input circuit
VDD
HFI HKS DRING
Pulse
generator
VDD
PO
PIN DESCRIPTIONS
Symbol
ROW1~ROW4
COL1~COL3
COL4/KT
XIN and XOUT
XMUTE
V and V
DD SS
HFI
HFO
DTMF
Function
Keyboard scan pins of row group. In idle state (HKS is “High” and HFO is “Low”),
these pins stay “High impedance” level to prevent power consumption. Otherwise,
these pins switch to “High” level for detecting keyboard entry. These pins will output
600 Hz signal while keyboard is scanning.
Keyboard scan pins of column group. In idle state, these pins stay “High impedance”
level. Otherwise these pins switch to “Low” level for detecting keyboard entry. These
pins will output 600 Hz signal while keyboard is scanning.
The fourth column group pin of the keyboard that also provides the keytone output
. Normally, this pin stays “Low” level for detecting keyboard entry. After a valid
keyboard entry, this pin will output keying confirmation tone that is 600 Hz signal and
30 ms duration. To prevent signal interference, while DTMF issue, it will disable key
tone output except function key.
Oscillator input and output pins. A 3.579545 MHz crystal or ceramic resonator must
be crossed connection to XIN and XOUT pins which generate system clock.
The Tone/Pulse MUTE signal output pin that is NMOS open-drain output structure.
This pin will switch to “Low” level during Tone/Pulse dialing and hold function .
Otherwise, this pin stays “High impedance” level.
Positive and negative power supply input pins. Recommended operating voltage from
2.0Vdc to 5.5Vdc.
Handfree inputs pin which accepts falling edge signal to turn “on” or turn “off”
handfree function. This pin is hysteresis input structure and built-in pull up resistor
(typically 200 Kohms).
Handfree outputs pin that is designed to control telephone line for on-hook dialing or
control speakerphone circuit for handfree conversation. When handfree function is
executed, this pin will switch to“High”. Otherwise, this pin stays “Low” level.
The DTMF (Dual Tone Multi-Frequency) and music signals output pin. Normally,
this pin stays “Low” level. In Tone dialing mode, this pin will output DTMF signal
that is corresponding to keyboard 0 .. 9, * and # keys. Beside this, in the line hold
duration, this pin will issue dual-tone music for telephone line.
* This specification are subject to be changed without notice.
10.1.1997 3


3Pages


EM91401D 電子部品, 半導体
EM91401 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
Redialing:
Preliminary
After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The
numbers that are stored into LNB memory will be dialed output.
Pause (P) key operation
The Pause (P) key is designed to support pause operation in dialing duration. “P” key can be stored in memory
and it will occupy one digital position.
• To select Pulse or Tone mode.
• Off-hook (or turn on HF function), push (d1, d2, .. , dn, RD/P, k1, k2, .. , kn.) These numbers will be dialed
out as following sequence:
d1, d2, .. , dn, Tp, k1, k2, .. , kn.
Pulse to Tone (*/T) key operation
The Pulse to Tone (*/T) key is designed to support toll dialing (long distance call) or PABX system operation.
The “*/T” key can be stored in memory and it will occupy one digital position.
• To select Pulse mode.
• Off-hook (or turn on HF function), push d1, d2, .. , dn, */T, k1, k2, .. , kn. These numbers will be dialed out
as following sequence:
d1, d2, .. , dn, Tpt, k1, k2, .. , kn.
(pulse mode)
(tone mode)
Flash (F) key operation
The Flash (F) key is designed to break telephone line temporarily. After F key is depressed, this dialer will send
a flash signal to break line 600 ms, 300 ms, 100 ms or 80 ms as ROW3 and ROW4 selection.
Handfree (HF) function
The handfree function is designed to support on-hook dialing and loudspeaker application which can be turn “on”
or “off” with falling edge signal from HFI pin. During handfree function is executed, the HFO pin is switched
to “high”. Otherwise the HFO pin stays “low” level. One of the following operations can turn off Handfree
function (HFO pin return to “Low”).
• On-off hook once.
• Trigger HFI pin with falling edge signal.
• Turn on Hold (HD) function. (HDO pin switched to “High”)
Hold (HD) function
The Hold function is designed to stop conversation temporarily. In off-hook state (or HF function is turned on),
to press HD key on the keyboard, the Hold function can be turned “on” (HDO pin switched to “High”). One of
the following operations can turn off Hold function (HDO pin switched to “Low”).
• On-off hook once.
• To press HD key over 93 ms.
* This specification are subject to be changed without notice.
10.1.1997 6

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
EM91401A

TONE/PULSE SWITCHABLE DIALER

ELAN Microelectronics
ELAN Microelectronics
EM91401B

TONE/PULSE SWITCHABLE DIALER

ELAN Microelectronics
ELAN Microelectronics
EM91401C

TONE/PULSE SWITCHABLE DIALER

ELAN Microelectronics
ELAN Microelectronics
EM91401D

TONE/PULSE SWITCHABLE DIALER

ELAN Microelectronics
ELAN Microelectronics


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