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參數(shù)資料
| 型號： | EM91455BP |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| 中文描述： | 音頻/脈沖撥號與LCD接口及IPP檢測功能 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 199K |
| 代理商： | EM91455BP |
EM91455 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
10
* This specification are subject to be changed without notice.
9.24.1998
RMUTE stays “High impedance”. If DRING is detected a “High” level, the RMUTE will output “Low” until
keyboard entry. In actual application of the RMUTE pin is recommended connection to microphone of the
phone handset to prevent that the dialing signal (DTMF) is coupling by the Microphone of the phone handset.
(such as pocket dialer)
i.
ii. In idle state, turn on handfree function.
iii. The flash operation ( F key ).
In idle state, HKS is from “High” to “Low” (pick up handset action).
Dialing via LOCK function
Conventional key lock mode. (Connects a resistor on COL1 pin to VDD)
Off hook (or turn on HF function)
Keying : d1 , d2 , .. , dn . If the first number (d1) is the same with the lock number that optioned in table,
then all entry numbers can not be dialed out and keyboard will be inhibited until on to off hook once again.
If the first number is not equal to lock number, all the entry numbers will be dialed out.
Password control mode. (Connects a resistor on COL1 pin to VSS)
Off hook (or turn on HF function)
Keying :
([ # , ps1 , ps2 , ps3 ] + telephone number.)
The numbers in the [ ] symbol could be omitted. The
number “#” will be inhibited when the current password is not equal to 000,and
ps1 , ps2 , ps3
work at the
checking state, not to be dialed out. Other descriptions are as on following :
Incorrect password entry
. The telephone numbers can not be dialed out.
Password is omitted
. If the first digit of telephone numbers is the same with the lock number, all of the
telephone numbers can not be dialed out and keyboard will be inhibited until On to Off hook once again.
If the first digit is not equal to the lock number then the telephone numbers will be dialed out entirely.
Correct password entry
. The telephone numbers can be dial out no matter what lock number is. If the first
digit is not equal to the lock number then the telephone numbers will be dialed out entirely and use the Flash
key to redial any other number will not check the pass word again.
Ring detector
The Ring detector is designed to prevent illegal dialing from pocket dialer. Following the procedures ( i,ii,iii ),
this dialer will detect DRING pin to control RMUTE output level. If DRING is detected a “Low” level, the
I.P.P. DETECT function
The EM91455 series provide the I.P.P. function to pretect illegal connect. I.P.P means Illegal Parallel Phone
Detect. I.P.P. function depend on XMUTE pin and HKS, HF status. When in the ON-HOOK condition and HF
turn off, the XMUTE pin will be a Input pin to detect the voltage lever, otherwises, the XMUTE pin will be a
normally output pin use for control speech network. When I.P.P. function detect. XMUTE pin at "low" status (In
On-Hook and HF turn OFF state), EM91455 will turn on HF and HDO then send alarm signal to telephone line.
In alarm duration DTMF pin will continue sending "#","8" "8" signal. The DTMF signal will interfere the illegal
user until the illegal user hang up the phone and the XMUTE pin detect "high" again. The telephone circuit design
can allow the illegal internal connect user. (see I.P.P Application CIRCUIT).
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| EM91455CK | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| EM91455D | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| EM91455DK | TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| EM91455C | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| EM91455CK | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| EM91455D | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| EM91455DK | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
| EM91465 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION |
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