Le9541DUQCT Microchip

Le9541 Ringing Subscriber Line Interface Circuit VE950 Series Preliminary Data Sheet Document Code PD-000245729 Version 9 May 2019 Features Ordering Information Single Channel High Voltage Ringing SLIC Functionally Equivalent of Le9540 One Channel Le9541CUQC 40-pin QFN Tray High Voltage High Bandwidth Design Supports 7- Le9541DUQC 40-pin QFN Tray kHz Wide Band Applications - Up to 145 V ringing battery Le9541D Le9541CUQCT 40-pin QFN Tape and Reel Le9541DUQCT 40-pin QFN Tape and Reel - Up to 100 V ringing battery Le9541C 1. All devices are in green package.The green package is Halogen Operation Control and Status Report through free and meets RoHS Directive 2002/95/EC of the European Serial Interface with Reset Council to minimize the environmental impact of electrical - SLIC Operation State/DC Current Limit/Test equipment. Load Enable Description - DC Loop Closure/Ring Trip/Thermal Shutdown The Le9541 Ringing SLIC device is a single-channel Eight Operating States device and equivalent of channel 1 of Le9540 in the - Scan (Minimal Power Dissipation) same 40-pin QFN package. It is optimized to provide battery feed, ringing, and supervision on voice loops - Active Forward (Default Power Up State) found in short-loop VoIP applications. This device is - Active Forward ICV optimized to interface to the Broadcom BCM3383/85 SoC, or equivalent. The SLIC operational control and - Active Reverse status report are communicated through a serial - Tip Open interface with reset. The SLIC supports wide-band applications. -Wink - Ringing - Disconnect RTFLT VBAT GAIN = 13.67 Ringing Inputs for Optimized Interface to BRCM RESET LOOP SoC Devices EN VITR AAC STATUS CLK SERIAL INTERFACE DIN - Accepts driving signals from per channel voice DOUT TXI BATTERY VDD RECTIFIER outputs as well as from PWM outputs SUPPLY VTX IREF DC Current Limited in Active/Scan/Tip Open VCC BIAS States VREF 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 DC CURRENT SENSE FEED RN Test Load Switch Supports Integrated Test VREF + AR PR Algorithms RING RINGP Available in 40-pin QFN package that is pin-to- TEST Gain = 150 SWITCH pin compatible with (channel 1 of) Le9540. TLD DCF Applications Figure 1 - Block Diagram Optimized to work with BCM3383/85 Broadcom SoCs for short loop residential gateways 1 Microsemi Corporation Confidential and Propritary CONFIDENTIALLe9541 Preliminary Data Sheet Table of Contents Features . 1 Applications . 1 Description 1 Product Description . 4 Power Supplies . 4 Operating States 4 Communication Interface . 5 Package 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 . 23 Applications 26 In-rush Control 26 Loop Closure and Ring Trip Detection Thresholds with Hysteresis 26 Design Examples 27 Application Circuit Parts List 28 Physical Dimensions . 29 40-pin QFN . 29 Revision History . 30 Version 1 to Version 2 30 Version 2 to Version 3 30 Version 3 to Version 4 30 Version 4 to Version 5 30 Version 5 to Version 6 30 Version 6 to Version 7 30 Version 7 to Version 8 30 Version 8 to Version 9 30 2 Microsemi Corporation Confidential and Proprietary CONFIDENTIAL