LE9540CUQCT Microchip

Le9540 Dual Ringing Subscriber Line Interface Circuit VE950 Series Data Sheet Version 7 May 2019 Features Document Code PD-000303860 Dual Architecture Integrates Two Channels of SLIC Functionality Ordering Information High Voltage High Bandwidth Design Supports 7- kHz Wide Band Applications Le9540CUQC 40-pin QFN Tray Le9540DUQC 40-pin QFN Tray - Up to 145 V ringing battery Le9540D - Up to 100 V ringing battery Le9540C Le9540CUQCT 40-pin QFN Tape and Reel Le9540DUQCT 40-pin QFN Tape and Reel Common Protection Reference Output Operation Control and Status Report through 1. All devices are in green packages.The green package is Halo- Serial Interface with Reset gen free and meets RoHS Directive 2002/95/EC of the Euro- pean Council to minimize the environmental impact of electrical - SLIC Operation State/DC Current Limit/Test equipment. Load Enable - DC Loop Closure/Ring Trip/Thermal Shutdown Description Channel Independent Eight Operating States The Le9540 Dual Ringing SLIC device is a dual- channel device optimized to provide battery feed, - Scan (Minimal Power Dissipation) ringing, and supervision on voice loops found in short- - Active Forward (Default Power Up State) loop VoIP applications. This device is optimized to interface to the Broadcom BCM3383/85 SoC, or - Active Forward ICV equivalent. The SLIC operational control and status - Active Reverse report for both channels are communicated through a serial interface with reset. The common protection - Tip Open reference output can trigger either a common -Wink protection device or per channel devices for both channels. The SLIC supports wide-band applications. - Ringing - Disconnect Common to both channels RTFLT VBAT1 VBAT2 CPR Per Channel Ringing Inputs for Optimized GAIN = 13.67 Interface to BRCM SoC Devices RESET LOOP EN VITR AAC STATUS SERIAL CLK - Accepts driving signals from per channel voice BATTERY INTERFACE DIN TXI SUPPLY DOUT outputs as well as from PWM outputs and VDD RECTIFIER COMMON PROTECTION IREF DC Current Limited in Active/Scan/Tip Open VTX REFERENCE VCC States BIAS VREF 1 VREF 2 AX (ITR/432) Loop Start, Ring Trip, and Ring-Ground ITR Gain = 8 Detections with two thresholds RCVP PT AT AC + Thermal Shutdown Protection with Hysteresis CURRENT DC SENSE FEED RN Test Load Switch Supports integrated test VREF + AR PR algorithms RING RINGP TEST SWITCH Gain = 150 Applications TLD DCF One channel shown unless otherwise specified Optimized design to work with BCM3383/85 Broadcom SoCs Short loop residential gateways Figure 1 - Block Diagram 1 Microsemi Corporation Confidential and Proprietary CONFIDENTIALLe9540 Data Sheet Table of Contents Features . 1 Applications . 1 Description 1 Product Description . 4 Power Supplies . 4 Operating States 4 Communication Interface . 5 Protection . 5 Thermal 5 Connection Diagram . 6 Pin Descriptions 7 Absolute Maximum Ratings . 9 Thermal Resistance . 9 Package Assembly 9 Operating Ranges 10 Environmental Ranges 10 Electrical Ranges 10 Electrical Characteristics 11 Supply Currents . 11 Power Dissipation 12 Line Characteristics 13 Serial Interface Characteristics 18 Serial Interface Operations and Definitions . 19 Serial Interface Operations . 19 Bit Assignments . 20 Test Circuit . 22 Applications 25 In-rush Control 25 Loop Closure and Ring Trip Detection Thresholds with Hysteresis 25 Protection 26 Design Examples 28 Application Circuit Parts List 29 Physical Dimensions . 30 40-Pin QFN . 30 Revision History . 31 Version 1 to Version 2 31 Version 2 to Version 3 31 Version 3 to Version 4 31 Version 4 to Version 5 31 Version 5 to Version 6 31 Version 6 to Version 7 31 2 Microsemi Corporation Confidential and Proprietary CONFIDENTIAL