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參數(shù)資料
| 型號： | L9313 |
| 英文描述： | Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications |
| 中文描述： | 線路接口和線路接入電路全功能SLIC和敲響訓練班- 57應用 |
| 文件頁數(shù)： | 15/40頁 |
| 文件大小： | 746K |
| 代理商： | L9313 |
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Data Sheet
September 2001
Full-Feature SLIC and Ringing Relay for TR-57 Applications
L9313 Line Interface and Line Access Circuit
Agere Systems Inc.
15
Electrical Characteristics
(continued)
Ring Trip Detector
Table 5. Ring Trip Detector
1. The ringing source may be either of the following:
a.) The ringing source consists of the ac and dc voltages added together (battery-backed ringing); the ringing return is ground. In this case,
bit B3 will always be a 1 when ringing is applied.
b.) The ringing source consists of only the ac voltage (earth-backed ringing); the ringing return is the dc voltage. In this case, bit B3 will
always be a 0 when ringing is applied.
2. NDET must also indicate ring trip when the ac ringing voltage is absent (<5 Vrms) from the ringing source.
3. Pretrip ringing must not be tripped by a 10 k
resistor in parallel with an 8 μF capacitor applied across tip and ring.
Parameter
Min
±2.5
Typ
±3
Max
±3.5
Unit
V
Voltage at Input that will Cause Ring Trip After Appropriate
Zero Crossings
Voltage at Input that will Cause Immediate Ring Trip
Ringing Source
1
:
Frequency (f)
dc Voltage
ac Voltage
Ring Trip (NDET = 0)
2, 3
:
Loop Resistance
Trip Time
NDET Valid
±12
±15
±18
V
19
–39.5
60
20
—
—
28
–57
105
Hz
V
Vrms
2000
—
—
—
—
—
—
200
80
ms
ms
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