LUCL9313AP-DT Просмотр технического описания (PDF) - Agere -> LSI Corporation

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LUCL9313AP-DT

Line Interface and Line Access Circuit Full-Feature SLIC and Ringing Relay for TR-57 Applications

Agere -> LSI Corporation 

Data Sheet

September 2001

L9313 Line Interface and Line Access Circuit

Full-Feature SLIC and Ringing Relay for TR-57 Applications

Operating States (continued)

Input State Coding (continued)

Table 3. Supervision Coding

Pin NSTAT

0 = off-hook or ring trip

1 = on-hook and no ring trip

Pin TRGDET

0 = ring ground

1 = no ring ground

State Definitions

Primary Control Modes

Powerup, Forward Battery

s Normal talk and battery feed state.

s Pin PT is positive with respect to pin PR.

s All ac transmission and dc feed circuits are powered

up.

s On-hook transmission is enabled.

s Thermal shutdown is active.

s Battery window comparator sense shutdown is on.

s Switch break switches (SW1 and SW2) are closed;

and ring access switches (SW3 and SW4) are open.

s VBAT1 is applied to tip and ring during on-hook condi-

tions.

s Automatic battery switch selects VBAT1 or VBAT2 dur-

ing off-hook conditions.

s All supervision circuits except for ring trip detector

are active.

s NSTAT represents the loop closure detector status.

Powerup, Reverse Battery

s Normal talk and battery feed state.

s Pin PR is positive with respect to pin PT.

s All ac transmission and dc feed circuits are powered

up.

s On-hook transmission is enabled.

s Thermal shutdown is active.

s Battery window comparator sense shutdown is on.

s Switch break switches (SW1 and SW2) are closed;

and ring access switches (SW3 and SW4) are open.

s VBAT1 is applied to tip and ring during on-hook condi-

tions.

s Automatic battery switch selects VBAT1 or VBAT2 under

off-hook conditions.

s All supervision circuits except for ring trip detector

are active.

s NSTAT represents the loop closure detector status.

Scan

s Scan clamp circuitry is active.

s Loop closure is active.

s All ac transmission, dc feed, and other supervision

circuits, including ring trip, are shut down.

s PPM and test are powered down.

s Thermal shutdown is active.

s Battery window comparator sense shutdown is on.

s On-hook transmission is disabled.

s Pin PT is positive with respect to PR and VBAT1 is

applied to tip/ring.

s Switch break switches (SW1 and SW2) are closed;

and ring access switches (SW3 and SW4) are open.

s NSTAT represents the loop closure detector status.

Agere Systems Inc.

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