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參數資料
| 型號： | AG1171 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | +3.3V / +5.0V Low Power Ringing SLIC |
| 中文描述： | 3.3 / 5.0V低功耗振鈴用戶接口 |
| 文件頁數： | 9/16頁 |
| 文件大小： | 228K |
| 代理商： | AG1171 |
V1.0 Dec 2006
Data Sheet
Ag1171
+3.3V / +5.0V Low Power Ringing SLIC
Components
C1, C3 = 100nF
C4 = 10nF
C2 = 470uF, 16V Aluminium Electrolytic (standard type)
R1 = External DC bias resistor (required for CLI) typically 20K to 39K
D1 = BZT03C82 or P6KE82 (only one needed per line card)
D2 – 5 = 1N4004 or MB4S bridge
D6 = 1N4148 or BAS16
Figure 4: Typical Connection Diagram
5.11. Switch Hook Detection
When the subscriber goes “off-hook” loop current will begin to flow. If this current is above
the detection threshold the switch hook output, SHK, will switch to a logic (H). It is
recommended that software or hardware de-bouncing of the switch hook signal is used.
This is to avoid short pulses which can cause a false switch hook output, triggering the
incorrect system response.
During loop disconnect dialling, SHK will pulse between logic (H) and logic (L) to indicate
the digits being dialled. Again it is recommended that software de-bouncing of the pulse
edges is used to avoid false detection of digits
Silver Telecom 2006
9
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