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參數(shù)資料
| 型號： | M3541 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Single Number Pulse Tone Switchable Dialer(脈沖語音開關(guān)撥號器) |
| 中文描述： | 單數(shù)脈沖切換撥號音（脈沖語音開關(guān)撥號器） |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 165K |
| 代理商： | M3541 |
DTMF MODE
The MUTE output goes to logic ’1’ when a key is activatedand remains active for the duration of the tone
transmission.
The tonerate will be 100mson, 100msoff minimum.
TONE FREQUENCIES
Keypad
R1
697
– 0.07
R2
770
– 0.10
R3
852
+0.19
R4
941
– 0.15
C1
1209
– 0.17
C2
1336
– 0.20
C3
1477
– 0.22
Nominal Frequency (Hz)
Deviation from Nominal (%)
There will be an additional error due to the deviation of the oscillator frequency from 560KHz.
Figure 3
: Timing Diagram.
M3541
6/12
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