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參數(shù)資料
| 型號： | EM91420D |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | Oscillator; Frequency:1MHz; Frequency Tolerance:+/- 100 ppm; Load Capacitance:50pF; Crystal Terminals:PCB Thru Hole; Supply Voltage:5V; Mounting Type:Through Hole; Number of Pins:4 |
| 中文描述： | 音頻/脈沖開關(guān)的撥號器與LCD接口及雙音的旋律發(fā)電機(jī) |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 175K |
| 代理商： | EM91420D |
EM91420 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
8
* This specification are subject to be changed without notice.
10.1.1997
1
On-hook State
2
Off-hook State
4
On-hook
Hand-free State
HKS=Lo
HKS=Lo
HKS=Hi
HF
HF
HD
HF
HD
6
On-hook
Hold-line State
3
Off-hook
Hand-free State
HF
HF
HF
HD
HKS=Hi
HKS=Lo
5
Off-hook
Hold-line State
HD
HD
HKS=Hi
0
1
bit 0
bit1
bit2
data bits
bit3
bit4
bit5
ready
start bits
0
1
stop bits
Operating flow chart
<Note> : HF = Handfree
HD = Hold
Truth table
Operating state
Input/Output pin level
XMUTE
F
F
F
F
L
L
HKS
H
L
L
H
L
H
PO
F
F
F
F
F
F
HFO
L
L
H
H
L
L
HDO
L
L
L
L
H
H
(0) On-hook, idle state
(1) Off-hook line
(2) Off-hook, HF line
(3) On-hook, HF line
(4) Off-hook, HD line
(5) On-hook, HD line
Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level.
Music on Hold
EM91420 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is
designed for telephone line at line holding.
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM91420 | Tone/Pulse Switchable Dialer with LCD Interface and Dual-Tone Melody Generator(0.15mA（脈沖）/0.3mA（音調(diào)）工作電流的音調(diào)/脈沖可轉(zhuǎn)換的撥號器（帶LCD接口和雙音旋律發(fā)生器）) |
| EM91421 | Tone/Pulse Switchable Dialer with LCD Interface and Dual-Tone Melody Generator(0.15mA（脈沖）/0.3mA（音調(diào)）工作電流的音調(diào)/脈沖可轉(zhuǎn)換的撥號器（帶LCD接口和雙音旋律發(fā)生器）) |
| EM91440BP | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
| EM91440DK | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
| EM91440A | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM91420DK | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
| EM91440 | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
| EM91440A | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
| EM91440A/B/C/D | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:Telephone Dialer Multi-Function Dialer |
| EM91440AP | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR |
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