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參數(shù)資料
| 型號： | L9214A |
| 英文描述： | CAP CER 220PF 3.15KVDC R3 RAD |
| 中文描述： | 低成本振鈴用戶接口 |
| 文件頁數(shù)： | 12/46頁 |
| 文件大?。?/td> | 790K |
| 代理商： | L9214A |
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Preliminary Data Sheet
October 2001
Low-Cost Ringing SLIC
L9214A/G
12
Agere Systems Inc.
Operating States
Table 2. Control States
* In this state, all supervision functions are disabled, on hook transmission is disabled, pin PT is positive with respect to PR, V
BAT1
is applied to
tip/ring, and the tip to ring voltage will be equivalent to the scan state.
B3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
State
Disconnect
Ringing, (line reverse with high slope)
Unused*
Ringing, (line forward with high slope)
Disconnect
Reverse active and on-hook, fast polarity reversal
Scan
Forward active and on-hook, fast polarity reversal
Disconnect
Ringing, (line reverse with low slope)
Unused*
Ringing, (line forward with low slope)
Disconnect
Reverse active and on-hook, slow polarity reversal
Scan
Forward active and on-hook, slow polarity reversal
State Definitions
Forward Active (Fast Polarity Reversal)
Off-hook
I
Pin PT is positive with respect to PR.
I
V
BAT2
is applied to tip/ring drive amplifiers for the
majority of loop lengths. This may also be derived
from V
BAT1
through a power control resistor.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
Overhead is set for undistorted transmission of
+3.17 dBm into 600
.
On-hook
I
Pin PT is positive with respect to PR.
I
V
BAT1
is applied to tip/ring drive amplifiers. The tip to
ring on-hook differential voltage will be between
–
42.5 V and
–
56.5 V with a primary battery of
–
65 V.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
On-hook transmission is enabled.
I
Overhead is set to nominal 17.0 V for undistorted
transmission of 0 dBm into 600
.
Forward Active (Slow Polarity Reversal)
Off-hook
I
Same as the forward active (fast polarity reversal)
state, but with slower polarity reversal.
On-hook
I
Same as the forward active (fast polarity reversal)
state, but with slower polarity reversal.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| L9215A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Short-Loop Sine Wave Ringing SLIC |
| L9216A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Short-Loop Ringing SLIC with Ground Start |
| L9217A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and PPM |
| L9218A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface |
| L9219A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and Dual Current Limit |
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