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參數(shù)資料
| 型號： | EM91220AP |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| 中文描述： | 音頻/脈沖開關(guān)的撥號器與LCD接口 |
| 文件頁數(shù)： | 6/20頁 |
| 文件大小： | 145K |
| 代理商： | EM91220AP |
EM91220 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
6
* This specification are subject to be changed without notice.
10.1.1997
Pulse to Tone (*/T or P-T) key operation
The Pulse to Tone (*/T or P-T) key is designed to support toll dialing (long distance call) or PABX system
operation. The "*/T (or P-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, (or P-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 “l(fā)ow” level.
Truth table
Operating state
Input/Output pin level
XMUTE
F
F
F
F
HKS
H
L
L
H
PO
F
F
F
F
PM
L
L
L
L
HFO
L
L
H
H
(0) On-hook, idle state
(1) Off-hook line
(2) Off-hook, HF line
(3) On-hook, HF line
Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level.
SDO (Serial Data Output) function
The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD
driver and voice synthesizer. So the dialing numbers can be display on LCD screen with EM32100 (or EM32116
). The SDO signal consists of two start bits, six data bits and two stop bits. Each bit time is about 3.9 ms (256 Hz)
and output sequences are following by start bits, data bits (LSB to MSB) and stop bits.
0
1
bit 0
bit1
bit2
data bits
bit3
bit4
bit5
ready
start bits
0
1
stop bits
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM91220B | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91220BP | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91220C | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91220CK | 398500316 |
| EM91220 | Tone/Pulse Switchable Dialer with LCD Interface(帶LCD接口，低工作電流的音調(diào)/脈沖可轉(zhuǎn)換的撥號器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM91220B | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91220BP | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91220C | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91220CK | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
| EM91240 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE |
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