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L3000NSO Datasheet(PDF) 4 Page - STMicroelectronics |
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L3000NSO Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 32 page PIN DESCRIPTION (L3092) N ° Name Description 1 VOUT Two wire unbalanced output carryng out the following signals reduced by 40: 1) DC voltage to perform the proper DC characteristic. 2) Ringing Signal 3) Voice Signal 2 RPC AC line Impedance Adjustment Protection Resistances Compensation 3 TX Transmit Amplifier Output 4 COMP Comparator Input. This is the input comparator that senses the line voltage in power down and in automatic stand-by, allowing off hook detection in this mode. 5 AUT Aut. Input. It is a part of the digital interface. Loaded when CS is low. 6 MR Master Reset Input. When it is connected to ground the SLIC is forced in power down. It has an internal pull-up. (typ. 200K Ω) (*) 7 PWON Power on/power off input. This input is part of digital interface. Loaded when CS is low. 8 RING Ring Enable Input. This input is part of the digital interface. Loaded when CS is low. 9 CS Chip Select Input. 10 GDK Ground Key Output Enabled by CS Low. 11 ONHK On Hook/off Hook Output Enabled by CS Low. 12 C2 State control Signal 2. 13 C1 State Control Signal 1. Combination of C1 and C2 define operating mode of the high voltage part. 14 RGIN Low Level Ringing Signal Input. 15 CRT Ring Trip Detection 16 IL Longitudinal Line Current Input 17 RDC DC Feeding System 18 IT Transversal Line Current Input 19 ACDC AC - DC Feedback Input. 20 VDD Positive Supply Voltage, +5V. 21 REF Bias Setting Pin. 22 VSS Negative Supply Voltage, -5V. 23 GND Analog and Digital Ground. 24 LIM Limiting Current Selection Input. Loaded when CS is low. 25 PDO Power Down Output. Driving the high voltage part L3000N through the bias resistor RH. 26 ZB TX Amplifier Negative Input performig the two to four wire conversion. In case of application with 2nd Generation COMBO performing also the echo cancellation (ex TS5070/5071), this pin must be connected to GND. 27 CAC AC Feedback Input. 28 ZAC AC Line Impedance Synthesis. (*) Must be connected to a proper capacitor for power on reset or to VDD if not used. Should not be left open. IL = Ib − Ia 100 IT = Ia + Ib 100 L3000N - L3092 4/32 |
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Similar Description - L3000NSO |
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