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| Semiconductor HC5519 SLIC Subscriber Line Interface Circuit Description The HC5519 SLIC is designed to meet the technical requirements of the China Telecommunications network. It provides many of the BORSCHT functions associated with a Central Office line circuit. The HC5519 consists of an A-Law Codec/Filter, a 2-wire interface circuit, an impedance control circuit, a ringing control circuit, a power management circuit, and a serial control interface circuit which is used to program and monitor the operation of the device. The integration of the line interface and coder/decoder functions into a 80 pin MQFP surface mount package and standard value surface mount components avoids the need for costly hybrid packaging techniques and offers the superior reliability of an integrated solution for dense circuit board layouts. The SLIC combines Harris' patented Bonded Wafer Dielectrically Isolated fabrication techniques with a state of the art CMOS process to produce the world's most compact line circuit signal processing solution. ADVANCE INFORMATION January 1997 Features * Complete A-Law Codec, Filter, and SLIC Functions with Serial Digital Control and Status Monitoring * 30mA Current Limit on Normal or Reverse Loop Feed * Constant Voltage (Resistance) Feed on Long Loops * On-Hook Transmission * Switch Hook Detection * User Selectable 2-Wire Complex Impedance * User Selectable Receive Gain * User Selectable Transmit Gain * Ringing, Test-In, and Test-Out Relay Drivers * Zero Crossing Ring Trip Detection and Ring Relay Release * Thermal Shutdown Protection * Meets CCITT/China Transmission Requirements Ordering Information PART NUMBER HC5519CQ TEMP. RANGE (oC) 0 to 70 PACKAGE 80 Ld MQFP PKG. NO. Q80.14x20 Applications * CO/PABX Line Circuits Pinout HC5519 (MQFP) TOP VIEW Block Diagram DR DX VFXI VFRO RX TX TX4W RN KZO 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 BCLKR BCLKX MCLKX TSX FSR FSX CO CI CS SUP AGND BGND RGND VBAT VCC VEE PROGRAMMING INTERFACE PCM INTERFACE A/D AND D/A TIP TIPSEN RINGSEN RING TA TB RD RBH RBL CRTD RPSB RPSR RPST RPSG 2-WIRE INTERFACE STATUS AND CONTROL TEST CONTROL RING CONTROL BATTERY REFERENCE BIAS POWER MANAGEMENT GNDD GNDA CP RDC CDC CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright (c) Harris Corporation 1997 File Number 4232 4-1 |
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