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參數資料
| 型號： | 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，測試接入設備 |
| 文件頁數： | 17/60頁 |
| 文件大小： | 1053K |
| 代理商： | L9310 |
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Data Sheet
July 2001
Full-Feature SLIC, Ringing Relay, and Test Access Device
L9310 Line Interface and Line Access Circuit
Agere Systems Inc.
17
State Definitions
(continued)
Primary Control Modes
(continued)
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.
Disconnect
—
Break Before Make
I
The tip and ring amplifiers are turned off to conserve
power.
I
Break switches (SW1 and SW2) are open, and ring
access switches (SW3 and SW4) are open. This
mode is also used as a transitional mode to achieve
break-before-make switching from the power ring to
active or scan mode.
I
All supervision circuits are powered down; NSTAT
overrides the actual loop condition and is forced high
(on-hook).
Tip Amp
I
Tip side break switch is closed, and ring side break
switch and ring access switches are open.
I
SLIC mode is unaffected by reconfiguring the ring
relay via this mode; thus, SLIC will remain in the
mode it was in prior to selecting this mode.
Ring Amp
I
Ring side break switch is closed; tip side break
switch and ring access switches are open.
I
SLIC mode is unaffected by reconfiguring the ring
relay via this mode; thus, SLIC will remain in the
mode it was in prior to selecting this mode.
Tip and Ring Amp
I
Tip and ring side break switches are open; ring
access switches are open.
I
SLIC mode is unaffected by reconfiguring the break
switches via this mode; thus, SLIC will remain in the
mode it was in prior to selecting this mode.
I
This is the calibration mode for differential and sin-
gle-ended tip/ring current measurements.
Reset
I
Selection of device reset via the RESET pin will set
the device into the disconnect break-before-make
state.
Secondary Control Mode States
Voltage: Tip to Ground
I
A voltage proportional to the tip to ground voltage
appears at the TESTLEV output.
I
TESTSIG input is on.
I
Customer applies ac test tone or V
REF
to TESTSIG to
select an ac or dc measurement.
Voltage: Ring to Ground
I
A voltage proportional to the ring to ground voltage
appears at the TESTLEV output.
I
TESTSIG input is on.
I
Customer applies ac test tone or V
REF
to TESTSIG to
select an ac or dc measurement.
Voltage: Tip to Ring
I
A voltage proportional to the differential tip to ring
voltage appears at the TESTLEV output.
I
TESTSIG input is on.
I
Customer applies ac test tone or V
REF
to TESTSIG to
select an ac or dc measurement.
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