參數(shù)資料
型號(hào)： L9310
英文描述： Line Interface and Line Access Circuit Full-Feature SLIC,Ringing Relay,and Test Access Device
中文描述： 線路接口和線路接入電路全功能用戶接口，振鈴繼電器，測(cè)試接入設(shè)備
文件頁(yè)數(shù)： 16/60頁(yè)
文件大小： 1053K
代理商： L9310
Data Sheet
July 2001
Full-Feature SLIC, Ringing Relay, and Test Access Device
L9310 Line Interface and Line Access Circuit
16
Agere Systems Inc.
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
Overhead is set via pin OVH.
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
PPMOUT is in the high-impedance mode, and
PPMIN 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
Overhead is set via pin OVH.
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
PPMOUT is in the high-impedance mode, and
PPMIN 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
PPM is 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
When the scan clamp circuitry is on, overhead volt-
age is fixed and not controlled by OVH. Also the cur-
rent limit is not the normal current limit set at V
PROG
.
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 TRGDET 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.
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