IDT82P2281

IDT82P2281 Allgemeine Beschreibung

Single T1/E1/J1 Long Haul / Short Haul TransceiverFEATURESLINE INTERFACEï The device can be configured as T1, E1 or J1ï Supports T1/E1/J1 long haul/short haul line interfaceï HPS for 1+1 protection without external relaysï Receive sensitivity exceeds -36 dB @ 772 Hz and -43 dB @ 1024Hzï Selectable internal line termination impedance: 100 Ω(for T1), 75Ω/ 120 Ω(for E1) and 110 Ω(for J1)ï Supports AMI/B8ZS (for T1/J1) and AMI/HDB3 (for E1) line encoding/decodingï Provides T1/E1/J1 short haul pulse templates, long haul LBO (per ANSI T1.403 and FCC68: 0 dB, -7.5 dB, -15 dB, -22 dB) and user programmable arbitrary pulse templateï Supports T1.102 line monitorï Transmit line short-circuit detection and protectionï Separate Transmit and Receive Jitter Attenuators (2 per link)ï Indicates the interval between the write pointer and the read pointer of the FIFO in JAï Loss of signal indication with programmable thresholds according to ITUT-T G.775, ETS 300 233 (E1) and ANSI T1.403 (T1/J1)ï Supports Analog Loopback, Digital Loopback and Remote Loop backï The receiver and transmitter can be individually powered downFRAMERï The device can be configured as T1, E1 or J1ï Frame alignment/generation for T1 (per ITU-T G.704, TA-TSY-000278, TR-TSY-000008), E1 (per ITU-T .704), J1 (per JT G.704) and un-framed modeï Supports T1/J1 Super Frame and Extended Super Frame, T1 Digital Multiplexer and Switch Line Carrier - 96, E1 CRC Multi-frame and Signaling Multi-frameï Signaling extraction/insertion for CAS and RBS signalingï Provides programmable systeminterface supporting MitelTM ST-bus, AT&TTM CHI and MVIP bus, 8.192 Mb/s multiplexed bus and 1.544 Mb/s or 2.048 Mb/s non-multiplexed busï Three HDLC controllers withseparate 128-byte transmit and receive FIFOs per controllerï Supports Signaling System #7 (SS7)ï Programmable bit insertion  and bit inversion on per channel/timeslot basisï Provides Bit Oriented Message (BOM) generation and detectionï Provides Automatic Performance Report Message (APRM) generationï Detects and generates alarms (AIS, RAI)ï Provides performance monitor to count Bipolar Violation error, Excess Zero error, CRC error, framing bit error, far end CRC error, out of frame and change of framing alignment positionï Supports System Loopback, Payload Loopback, Digital Loopback and Inband Loopbackï Detects and generates selectable PRBS and QRSSGENERALï Flexible reference clock (Nx 1.544 MHz or N x 2.048 MHz)(0 ï JTAG boundary scanï 3.3 V I/O with 5 V tolerant inputsï Low power consumption (Typical 190 mW)ï 3.3 V and 1.8 V power supplyï 80-pin TQFP packageAPPLICATIONSï C.O, PABX, ISDN PRIï Wireless Base Stationsï T1/E1/J1 ATM Gateways, Multiplexerï T1/E1/J1 Access Networksï LAN/WAN Routerï Digital Cross Connectï SONET/SDH Add/Drop Equipment