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HT9020A PDF预览

HT9020A

更新时间: 2024-11-07 03:42:59
品牌 Logo 应用领域
台湾合泰/盛群 - HOLTEK 解码器控制器
页数 文件大小 规格书
12页 477K
描述
Call Progress Tone Decoder & ABR Controller

HT9020A 数据手册

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HT9020  
Call Progress Tone Decoder & ABR Controller  
Features  
Low cost 32768Hz crystal  
Low power consumption  
Busy redial controller  
Repeat times: 3, 10 or 15 times  
Operating voltage: 2.5V to 5.5V (CPT mode)  
2.0V to 5.5V (ABR mode)  
( 2, 5, 15 times by mask option)  
4.65, 32.6 and 62.8 sec break time  
Call progress tone decoder  
Fully decoded tristate call progress status  
(16.3sec by mask option)  
Auto-terminate after 30 times (default)  
output  
ringback tone receipt  
Works with traditional precision or PBX call  
progress tones  
General Description  
The HT9020 provides two modes; Call progress  
tone decoder and Busy redial controller, to sup-  
port the application fields.  
Busy redial controller  
This feature implements a busy redial function.  
After decoding, if the line is busy, this device  
forces the dialer to break for 62.8 sec, then  
triggers the redial key after the dial tone re-  
ceipt. If the receiver is still busy, the redial  
sequence will be repeated 10 times. If the re-  
ceiver is ringing, the redial sequence will be  
terminated after 30 times of ringback tone re-  
ceipt.  
Standard call progress tone decoder  
This feature detects a specified input signal and  
then outputs relative envelopes during a 2.32sec  
interval. Three tristate output pins (DIAL, RBK,  
BUSY) indicate the presence of a dial tone, ring-  
back tone or busy/reorder tone respectively, so it  
provides information that enables the microproc-  
essor to decide whether to initiate, continue or  
terminate calls.  
Selection Table  
Function  
Operating  
Voltage  
OSC  
Frequency  
ABR  
Repeat Times  
ABR  
Break Time  
CPT Decoder  
Full decoded  
Package  
18 DIP/SOP  
8 DIP  
Part No.  
CPT mode  
2.5V~5.5V  
ABR mode  
2.0V~5.5V  
3/10/15 times  
[2/5/15 by  
metal option]  
4.65/32.6/62.8 sec  
[16.3 sec by  
metal option]  
HT9020A  
32768Hz  
32768Hz  
CPT mode  
2.5V~5.5V  
HT9020B  
CPT envelope only  
1
21st Aug 98  

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