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參數資料
| 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： | 11/40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.
11
Operating States
(continued)
Input State Coding
(continued)
Table 3. Supervision Coding
State Definitions
Primary Control Modes
Powerup, Forward Battery
I
Normal talk and battery feed state.
I
Pin PT is positive with respect to pin PR.
I
All ac transmission and dc feed circuits are powered
up.
I
On-hook transmission is enabled.
I
Thermal shutdown is active.
I
Battery window comparator sense shutdown is on.
I
Switch break switches (SW1 and SW2) are closed;
and ring access switches (SW3 and SW4) are open.
I
V
BAT1
is applied to tip and ring during on-hook condi-
tions.
I
Automatic battery switch selects V
BAT1
or V
BAT2
dur-
ing off-hook conditions.
I
All supervision circuits except for ring trip detector
are active.
I
NSTAT represents the loop closure detector status.
Powerup, Reverse Battery
I
Normal talk and battery feed state.
I
Pin PR is positive with respect to pin PT.
I
All ac transmission and dc feed circuits are powered
up.
I
On-hook transmission is enabled.
I
Thermal shutdown is active.
I
Battery window comparator sense shutdown is on.
I
Switch break switches (SW1 and SW2) are closed;
and ring access switches (SW3 and SW4) are open.
I
V
BAT1
is applied to tip and ring during on-hook condi-
tions.
I
Automatic battery switch selects V
BAT1
or V
BAT2
under
off-hook conditions.
I
All supervision circuits except for ring trip detector
are active.
I
NSTAT represents the loop closure detector status.
Scan
I
Scan clamp circuitry is active.
I
Loop closure is active.
I
All ac transmission, dc feed, and other supervision
circuits, including ring trip, are shut down.
I
PPM and test are powered down.
I
Thermal shutdown is active.
I
Battery window comparator sense shutdown is on.
I
On-hook transmission is disabled.
I
Pin PT is positive with respect to PR and V
BAT1
is
applied to tip/ring.
I
Switch break switches (SW1 and SW2) are closed;
and ring access switches (SW3 and SW4) are open.
I
NSTAT represents the loop closure detector status.
Pin NSTAT
Pin TRGDET
0 = ring ground
1 = no ring ground
0 = off-hook or ring trip
1 = on-hook and no ring trip
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