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參數(shù)資料
| 型號(hào)： | MT3171B |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Wide Dynamic Range DTMF Receiver(50dB的寬動(dòng)態(tài)范圍雙音多頻信號(hào)（DTMF）接收器) |
| 中文描述： | 寬動(dòng)態(tài)范圍的DTMF接收器（50分貝的寬動(dòng)態(tài)范圍雙音多頻信號(hào)（DTMF）的接收器） |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 68K |
| 代理商： | MT3171B |
MT3170B/71B, MT3270B/71B, MT3370B/71B
4-10
Figure 4 - Timing Diagram
Figure 5 - ACK to SD Timing
INPUT
ESt
(MT3x70B)
DStD
(MT3x71B)
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. (MT3x7xB).
- minimum time between valid DTMF signals (MT3x71B).
- maximum DTMF signal duration not detected as valid (MT3x7xB).
- minimum DTMF signal duration required for valid recognition (MT3x71B).
- time to detect the absence of valid DTMF signals (MT3x70B).
- time to detect the presence of valid DTMF signals (MT3x70B).
- supervisory tone integrator attack time (MT3x7xB).
- supervisory tone integrator decay time (MT3x7xB).
ESt/DStD
ACK
SD
V
IH
V
IL
V
IH
V
IL
1/
f
ACK
t
PAD
t
DH
b
0
b
1
b
2
b
3
MSB
DTMF Energy
Detect
LSB
DTMF Energy
Detect
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