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參數(shù)資料
| 型號(hào)： | MT3371BSR |
| 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)： | 5/15頁 |
| 文件大小： | 485K |
| 代理商： | MT3371BSR |
MT3170B/71B, MT3270B/71B, MT3370B/71B
Data Sheet
5
Zarlink Semiconductor Inc.
0= LOGIC LOW, 1= LOGIC HIGH
Table 1 - Serial Decode Bit Table
Note:
b0=LSB of decoded DTMF digit and shifted out first.
Powerdown Mode (MT317xB/337xB)
The MT317xB/337xB devices offer a powerdown function to preserve power consumption when the device is not in
use. A logic high can be applied at the PWDN pin to place the device in powerdown mode. The ACK pin should be
kept at logic low to avoid undefined ESt/DStD and SD outputs (see Table 2).
Table 2 - Powerdown Mode
+
=enters powerdown mode on the rising edge.
Table 3 - Call Progress Tones
852
1336
8
1
0
0
0
852
1477
9
1
0
0
1
941
1336
0
1
0
1
0
941
1209
*
1
0
1
1
941
1477
#
1
1
0
0
697
1633
A
1
1
0
1
770
1633
B
1
1
1
0
852
1633
C
1
1
1
1
941
1633
D
0
0
0
0
ACK (input)
PWDN (input)
ESt/DStD (output)
SD (output)
MT317xB/337xB
status
low
low
Refer to Fig. 4 for
timing waveforms
low
low
undefined
Refer to Fig. 4 for
timing waveforms
low
undefined
undefined
normal operation
low
high
high
high
+
low
high
powerdown mode
undefined
undefined
Frequency 1 (Hz)
Frequency 2 (Hz)
On/Off
Description
350
425
400
480
440
480
440
480
440
---
---
620
---
620
480
620
continuous
continuous
continuous
0.5s/0.5s
0.5s/0.5s
0.25s/0.25s
2.0s/4.0s
0.25s/0.25s
North American Dial Tones
European Dial Tones
Far East Dial Tones
North American Line Busy
Japanese Line Busy
North American Reorder Tones
North American Audible Ringing
North American Reorder Tones
F
LOW
F
HIGH
DIGIT
b
3
b
2
b
1
b
0
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