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XRT79L71 Datasheet(PDF) 5 Page - Exar Corporation |
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XRT79L71 Datasheet(HTML) 5 Page - Exar Corporation |
5 / 434 page XRT79L71 I REV. 1.0.0 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION TABLE OF CONTENTS GENERAL DESCRIPTION................................................................................................. 1 GENERAL FEATURES: .............................................................................................................................. 1 Line Interface Unit ....................................................................................................................................................... 1 DS3/E3 Framer ........................................................................................................................................................... 1 ATM/PPP Protocol Processor ..................................................................................................................................... 1 Transmit Cell Processing............................................................................................................................................. 1 Receive Cell Processing.............................................................................................................................................. 2 Transmit Packet Processing........................................................................................................................................ 2 Receive Packet Processing......................................................................................................................................... 2 Utopia/ System Interface ............................................................................................................................................. 2 Serial Interface ............................................................................................................................................................ 2 APPLICATIONS........................................................................................................................................... 2 FIGURE 1. BLOCK DIAGRAM OF THE XRT79L71 ............................................................................................................................... 2 P RODUCT ORDERING INFORMATION.....................................................................................................3 TABLE 1: PIN OUT OF THE XRT79L71 (TOP VIEW) ........................................................................................................................ 3 TABLE OF CONTENTS ............................................................................................................ I 1.0 BRIEF XRT79L71 ARCHITECTURE DESCRIPTION (SEE 79L71 PRODUCT BRIEF) ....................... 5 2.0 INTERRUPT STRUCTURE WITHIN THE XRT79L71 (SEE 79L71 PRODUCT BRIEF) ....................... 5 3.0 REGISTER MAP/DESCRIPTION OF THE XRT79L71 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR- CHANNEL FRAMER WITH LIU IC .......................................................................................................... 5 COMMONCONTROL REGISTERS OF THE XRT79L71 ........................................................................................ 5 CHANNEL CONTROL REGISTERS..................................................................................................................... 6 CHANNEL CONTROL REGISTERS..................................................................................................................... 7 LIU/JITTER ATTENUATOR CONTROL REGISTERS .............................................................................. 11 RECEIVE ATM CELL PROCESSOR/PPP PROCESSOR BLOCK CONTROL REGISTERS................... 11 TRANSMIT ATM CELL PROCESSOR/PPP PROCESSOR BLOCK CONTROL REGISTERS ................ 20 OPERATION BLOCK INTERRUPT REGISTER BIT FORMATS .................................... 24 ................................................................................................................................................................... 24 ................................................................................................................................................................... 24 ................................................................................................................................................................... 25 ................................................................................................................................................................... 26 ................................................................................................................................................................... 27 ................................................................................................................................................................... 27 ................................................................................................................................................................... 28 ................................................................................................................................................................... 28 ................................................................................................................................................................... 29 ................................................................................................................................................................... 30 CHANNEL INTERRUPT INDICATION REGISTERS ....................................................... 32 ................................................................................................................................................................... 32 ................................................................................................................................................................... 32 ................................................................................................................................................................... 33 ................................................................................................................................................................... 33 ................................................................................................................................................................... 34 ................................................................................................................................................................... 36 RECEIVE UTOPIA INTERFACE BLOCK - ATM UNI APPLICATIONS .......................... 39 TABLE 2: RECEIVE UTOPIA INTERFACE BLOCK - REGISTER/ADDRESS MAP - ATM UNI APPLICATIONS............................................ 39 ................................................................................................................................................................... 40 ................................................................................................................................................................... 43 ................................................................................................................................................................... 43 THE RECEIVE POS-PHY INTERFACE BLOCK - PPP APPLICATIONS ....................... 45 RECEIVE POS-PHY INTERFACE BLOCK - REGISTER/ADDRESS MAP - PPP APPLICATIONS ............................. 45 ................................................................................................................................................................... 45 ................................................................................................................................................................... 47 |
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