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L9310 Datasheet(PDF) 4 Page - Agere Systems |
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L9310 Datasheet(HTML) 4 Page - Agere Systems |
4 / 60 page Data Sheet July 2001 Full-Feature SLIC, Ringing Relay, and Test Access Device L9310 Line Interface and Line Access Circuit 4 Agere Systems Inc. Features s SLIC, solid-state ring relay, and line test access, inte- grated into a single package s 5 V and battery operation s User-defined power control options: — Automatic battery switch — Power control resistor — Package thermal capabilities s Minimal external components required s Operating states: — Forward active — Reverse active (controlled rate of reversal) — Scan — Ground start (tip open) — All-off or disconnect — Ring — Periodic pulse metering (PPM) active modes — Line test modes (dc/ac line voltage/current) s Ultralow power: — Scan, 15 mW — Active states, on-hook, 75 mW — Ring mode, on-hook, 90 mW — Disconnect, 10 mW s Adjustable overhead voltage: — Default overhead adequate for 3.14 dB into 900 Ω overload — Controlled rate of overhead adjustment s Latched parallel input data interface with reset s Interrupt (unlatched) based loop status monitor s Adjustable current limiter: — 10 mA to 70 mA programming range s Adjustable loop closure detector with hysteresis: — 4 mA detect, 2.5 mA no detect minimum, upper limit of 15 mA detect — Hysteresis, typical 20% of programmed on-hook to off-hook threshold s Ring trip detector: — Single-pole filtering s Thermal shutdown protection with hysteresis s Line break switch will foldover into a low-current state under high-voltage fault conditions s Battery out-of-range monitor circuit: — All-off upon loss of battery (low battery condition) — All-off upon high battery (fault condition) s Longitudinal balance: — ETSI/ITU-T, GR-909 balance s Ground start: — Tip open state — Ring ground detector s Ground key: — Tip/ring ground detector s Meter pulse compatible: — Dedicated meter pulse signal input — On-hook transmission of PPM (up to 5 Vrms) — Provides convenient access for hybrid filtering of meter pulse s Line test: — Line test modes (ac or dc): 1. Voltage tip to ground 2. Voltage ring to ground 3. Voltage tip to ring 4. Current tip to ring 5. Current tip to ground 6. Current ring to ground — Inject test tones through codec interface or dedi- cated input pin — Analog output at dedicated output pin s RFI/EMC-EN 300 386-2 V1.1.3 (1997-12) s Integrated 2 Form C ring relay: — Low impulse noise — Current-limited switches — Break-before-make and make-before-break switching s Meets ITU-T K20, ITU-T K21, and Telcordia* GR1089 requirements with external protection device s 44-pin, surface-mount plastic package (PLCC) Description The L9310 electronic line interface and line access cir- cuit (LILAC) provides all the functions that are neces- sary to interface a codec to the tip and ring of a subscriber loop, integrating the battery feed and ringing access relay in one low-power, low-cost package. The physical construction of the device is two chips. The first chip is manufactured in Agere 90 V complemen- tary bipolar integrated circuit (CBIC-S) technology. This chip contains the SLIC functionality: s ac transmission path s dc feedback and functions s Active dc current limit s Active mode loop supervision s Thermal shutdown * Telcordia is a trademark of Bell Communications Research, Inc. |
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