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LUCL9313GP-DT Datasheet(PDF) 9 Page - Agere Systems |
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LUCL9313GP-DT Datasheet(HTML) 9 Page - Agere Systems |
9 / 40 page Data Sheet September 2001 Full-Feature SLIC and Ringing Relay for TR-57 Applications L9313 Line Interface and Line Access Circuit Agere Systems Inc. 9 Pin Information (continued) Table 1. Pin Descriptions (continued) Pin Symbol Type Name/Function 8FB1 — Polarity Reversal Slowdown Capacitor. Connect a capacitor from this node to ground to control the rate of battery reversal. If controlled battery reversal is not desired, leave pin is open. 9LCF — Loop Closure Filter Capacitor. PPM injection can cause false loop closure indication. Connect a capacitor from this node to VCC to filter the loop closure detector. If loop clo- sure filtering is not required, leave this node open. 10 BGND G Battery Ground. Ground return for the battery supply. 11 RPWR P Auxiliary Battery. If a lower-voltage auxiliary battery is used, connect the auxiliary bat- tery supply to this node. If a power control resistor is used, connect the power control resistor from this node to VBAT1. If no power control technique is used, connect this node to VBAT1. 12 VBAT1 P Office Battery Supply. Negative high-voltage power supply. 13 VBAT1 P Office Battery Supply. Negative high-voltage power supply. 14 BGND G Battery Ground. Ground return for the battery supply. 15 TIE B’ — Connect to VREF. 16 TIE A’ — Connect to VREF. 17 18 38 NC — No Connect. May not be used as a tie point. 19 RTS I Ring Trip Sense. Sense input for the ring trip detector. 20 RSW O Ring Lead Ringing Access Switch. Ringing relay connects this pin to pin RRING. Connect this pin to pin PR through a 400 Ω current-limiting resistor. 21 RRING I Ringing Access. Input to solid-state ringing access switch. Connect to ringing genera- tor. 22 PR I/O Protected Ring. The output of the ring driver amplifier and input to loop sensing con- nected through solid-state break switch. Connect to subscriber loop through overvolt- age/current protection. 23 PT I/O Protected Tip. The output of the tip driver amplifier and input to loop sensing con- nected through solid-state break switch. Connect to subscriber loop through overvolt- age/current protection. 24 TRING O Tip Ringing Return. Ring relay connects this pin to PT. Connect to ringing supply return. 25 NSTAT O Loop Status. The output of the loop status detector (loop start detector wired-OR with ring trip detector). This loop status supervision output is not controlled by the data latch. 26 DGND G Digital Ground. 27 B2 I Data Control Input. See Table 2, Control States for details. 28 B1 I Data Control Input. See Table 2, Control States for details. 29 B0 I Data Control Input. See Table 2, Control States for details. 30 RESET I Reset. A logic low will override the B[0:3] and LATCH inputs and reset the state of the SLIC to the disconnect state and the switch to the all-off state. 31 LATCH I Latch Control Input. Edge-level sensitive control for data latches. 32 VDD P 5 V Digital Power Supply. 5 V supply for digital circuitry. 33 DGND G Digital Ground. Ground return for VDD current. 34 RGDET O Ring Ground Detect. When high, this open collector output indicates the presence of a ring ground or a tip ground. This supervision output may be used in ground start or common-mode fault detection applications. It has an internal pull-up. |
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