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XRT7250 Datasheet(PDF) 3 Page - Exar Corporation |
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XRT7250 Datasheet(HTML) 3 Page - Exar Corporation |
3 / 463 page XRT7250 DS3/E3 FRAMER IC áç áç áç áç REV. 1.1.1 I TABLE OF CONTENTS FEATURES ................................................................................................................................................ 1 APPLICATIONS ......................................................................................................................................... 1 BLOCK DIAGRAM OF XRT7250 ............................................................................................................... 1 ORDERING INFORMATION ......................................................................................... 2 TABLE OF CONTENTS ................................................................................................. I LIST OF FIGURES ........................................................................................................ X LIST OF TABLES ...................................................................................................... XVII PIN DESCRIPTIONS .......................................................................................................... 3 ELECTRICAL CHARACTERISTICS ................................................................................ 18 ABSOLUTE MAXIMUMS .......................................................................................................................... 18 DC ELECTRICAL CHARACTERISTICS .................................................................................................. 18 AC ELECTRICAL CHARACTERISTICS .................................................................................................. 18 AC ELECTRICAL CHARACTERISTICS (CONT.) .................................................................................... 20 1.0 TIMING DIAGRAMS ......................................................................................................................... 25 2.0 THE MICROPROCESSOR INTERFACE BLOCK ............................................................................ 36 2.1 THE MICROPROCESSOR INTERFACE BLOCK SIGNAL .......................................................................... 36 2.2 INTERFACING THE XRT7250 DS3/E3 FRAMER TO THE LOCAL µC/µP VIA THE MICROPROCESSOR INTER- FACE BLOCK 38 2.3 ON-CHIP REGISTER ORGANIZATION .................................................................................................. 51 PART NUMBER REGISTER (ADDRESS = 0X02) ................................................................................... 58 VERSION NUMBER REGISTER (ADDRESS = 0X03) ............................................................................ 58 BLOCK INTERRUPT ENABLE REGISTER (ADDRESS = 0X04) ............................................................ 58 BLOCK INTERRUPT STATUS REGISTER (ADDRESS = 0X05) ............................................................ 59 RXDS3 CONFIGURATION & STATUS REGISTER (ADDRESS = 0X10) ............................................... 59 RXDS3 STATUS REGISTER (ADDRESS = 0X11) .................................................................................. 61 RXDS3 INTERRUPT ENABLE REGISTER (ADDRESS = 0X12) ............................................................ 61 RXDS3 INTERRUPT STATUS REGISTER (ADDRESS = 0X13) ............................................................ 62 RXDS3 SYNC DETECT ENABLE REGISTER (ADDRESS = 0X14) ....................................................... 63 RXDS3 FEAC INTERRUPT ENABLE/STATUS REGISTER (ADDRESS = 0X17) .................................. 64 RXDS3 LAPD CONTROL REGISTER (ADDRESS = 0X18) .................................................................... 65 RXDS3 LAPD STATUS REGISTER (ADDRESS = 0X19) ....................................................................... 65 RXE3 CONFIGURATION & STATUS REGISTER 1 (ADDRESS = 0X10) ............................................... 66 RXE3 CONFIGURATION & STATUS REGISTER 2 (ADDRESS = 0X11) ............................................... 67 RXE3 INTERRUPT ENABLE REGISTER - 1 (ADDRESS = 0X12) .......................................................... 68 RXE3 INTERRUPT ENABLE REGISTER - 2 (ADDRESS = 0X13) .......................................................... 69 RXE3 INTERRUPT STATUS REGISTER - 1 (ADDRESS = 0X14) .......................................................... 69 RXE3 INTERRUPT STATUS REGISTER - 2 (ADDRESS = 0X15) .......................................................... 70 RXE3 LAPD CONTROL REGISTER (ADDRESS = 0X18) ....................................................................... 71 RXE3 LAPD STATUS REGISTER (ADDRESS = 0X19) .......................................................................... 72 RXE3 NR BYTE REGISTER (ADDRESS = 0X1A) ................................................................................... 73 RXE3 GC BYTE REGISTER (ADDRESS = 0X1B) .................................................................................. 73 RXE3 TTB-0 REGISTER (ADDRESS = 0X1C) ........................................................................................ 73 RXE3 TTB-1 REGISTER (ADDRESS = 0X1D) ........................................................................................ 74 RXE3 TTB-2 REGISTER (ADDRESS = 0X1E) ........................................................................................ 74 RXE3 TTB-3 REGISTER (ADDRESS = 0X1F) ........................................................................................ 74 RXE3 TTB-4 REGISTER (ADDRESS = 0X20) ......................................................................................... 75 RXE3 TTB-5 REGISTER (ADDRESS = 0X21) ......................................................................................... 75 |
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