參數(shù)資料
型號: ZL49031DCB
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 信令電路
英文描述: Wide Dynamic Range DTMF Receiver
中文描述: TELECOM, DTMF SIGNALING CIRCUIT, PDSO18
封裝: 0.300 INCH, MS-013AB, SOIC-18
文件頁數(shù): 9/14頁
文件大?。?/td> 353K
代理商: ZL49031DCB
ZL49010/1, ZL49020/1, ZL49030/1
Data Sheet
9
Zarlink Semiconductor Inc.
Figure 4 - Timing Diagram
INPUT
ESt
(ZL490x0)
DStD
(ZL490x1)
ACK
SD
DTMF
Tone #n
t
DP
t
REC
t
DO
DTMF
Tone #n + 1
DTMF
Tone
#n + 1
Input
Signal
t
DA
t
REC
t
ID
LSB
MSB
b
0
b
1
b
2
b
3
b
0
b
1
b
2
b
3
t
SA
t
SD
Input
Signal
Envelope
LSB
MSB
t
DO
t
ID
t
REC
t
REC
t
DA
t
DP
t
SA
t
SD
- maximum allowable dropout during valid DTMF signals. ZL490xx).
- minimum time between valid DTMF signals (ZL49011).
- maximum DTMF signal duration not detected as valid (ZL490xx).
- minimum DTMF signal duration required for valid recognition (ZL490x1).
- time to detect the absence of valid DTMF signals (ZL490x0).
- time to detect the presence of valid DTMF signals (ZL490x0).
- supervisory tone integrator attack time (ZL490xx).
- supervisory tone integrator decay time (ZL490xx).
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