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參數資料
| 型號： | L9311 |
| 英文描述： | Line Interface and Line Access Circuit Full-Feature SLIC with High Longitudinal Balance, Ringing Relay,and GR-909 Test Access |
| 中文描述： | 線路接口和線路接入電路全功能用戶接口高縱向平衡，振鈴繼電器，和GR - 909測試訪問 |
| 文件頁數： | 13/50頁 |
| 文件大?。?/td> | 852K |
| 代理商： | L9311 |
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Data Sheet
July 2001
Ringing Relay, and GR-909 Test Access
L9311 Full-Feature SLIC with High Longitudinal Balance,
Agere Systems Inc.
13
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
TESTLEV output is in the high-impedance mode,
and TESTSIG input is off unless this feature is
selected via the secondary control table.
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
TESTLEV output is in the high-impedance mode,
and TESTSIG input is off unless this feature is
selected via the secondary control table.
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
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.
Ground Start
I
Tip amplifier is on, tip break switch is open.
I
The device presents a high impedance (>100 k
) to
pin PT and a current-limited battery (V
BAT2
) to PR.
I
Common-mode current detector is on.
I
Ring trip detector is off.
I
Output RGDET indicates current flowing in the ring
lead.
I
This is not a defined state in the primary control
mode table. It is achieved via the powerup and the
ring amp states in the primary control mode table.
Ringing
I
Switch break switches (SW1 and SW2) are open,
and ring access switches (SW3 and SW4) are
closed.
I
Tip/ring drive amplifiers are powered down.
I
Ring trip circuit is active.
I
Loop supervision and common-mode current detec-
tors are powered down.
I
NSTAT represents the ring trip detector status.
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