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XRT79L71 Datasheet(PDF) 7 Page - Exar Corporation

Part # XRT79L71
Description  1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT79L71 Datasheet(HTML) 7 Page - Exar Corporation

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XRT79L71
III
REV. 1.0.0
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE
TABLE 17: TIMING INFORMATION FOR THE TRANSMIT OVERHEAD DATA INPUT INTERFACE BLOCK ..................................................... 96
FIGURE 21. TIMING DIAGRAM FOR THE TRANSMIT OVERHEAD DATA INPUT INTERFACE (METHOD 1 ACCESS) .................................... 98
FIGURE 22. TIMING DIAGRAM FOR THE TRANSMIT OVERHEAD DATA INPUT INTERFACE (METHOD 2 ACCESS) .................................... 98
RECEIVE PAYLOAD DATA OUTPUT INTERFACE ....................................................... 99
RECEIVE PAYLOAD DATA OUTPUT INTERFACE - TIMING REQUIREMENTS ................................... 99
TABLE 18: TIMING INFORMATION FOR THE RECEIVE PAYLOAD DATA OUTPUT INTERFACE BLOCK ...................................................... 99
FIGURE 23. TIMING DIAGRAM FOR THE RECEIVE PAYLOAD DATA OUTPUT INTERFACE (SERIAL MODE).............................................. 99
FIGURE 24. TIMING DIAGRAM FOR THE RECEIVE PAYLOAD DATA OUTPUT INTERFACE (NIBBLE-PARALLEL MODE) ........................... 100
RECEIVE OVERHEAD DATA OUTPUT INTERFACE .................................................. 101
RECEIVE OVERHEAD DATA OUTPUT INTERFACE - TIMING REQUIREMENTS .............................. 101
AC ELECTRICAL CHARACTERISTICS (CONT.)............................................................................................... 101
FIGURE 25. TIMING DIAGRAM FOR THE RECEIVE OVERHEAD DATA OUTPUT INTERFACE (METHOD 1 - USING RXOHCLK) ................ 102
FIGURE 26. TIMING DIAGRAM FOR THE RECEIVE OVERHEAD DATA OUTPUT INTERFACE (METHOD 2 - USING RXOHENABLE) .......... 102
RECEIVE UTOPIA INTERFACE .................................................................................... 103
RECEIVE UTOPIA INTERFACE ............................................................................................................. 103
FIGURE 27. TIMING DIAGRAM FOR THE RECEIVE UTOPIA INTERFACE BLOCK ................................................................................ 103
TABLE 19: TIMING INFORMATION FOR THE RECEIVE UTOPIA INTERFACE BLOCK ........................................................................... 103
12.0 ARCHITECTURAL/FUNCTIONAL DESCRIPTION OF THE XRT79L71 1-CHANNEL DS3/E3 ATM UNI/
PPP/CLEAR-CHANNEL FRAMER WITH LIU IC - CLEAR CHANNEL FRAMER AND HIGH-SPEED HDLC
CONTROLLER MODE APPLICATIONS (SEE 79L71-CC-ARC-DESC.PDF) .................................... 104
13.0 ARCHITECTURAL DESCRIPTION OF THE XRT79L71 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-
CHANNEL FRAMER WITH LIU IC - ATM UNI APPLICATIONS (SEE 79L71-ATM-ARC-DESC.PDF) 104
14.0 ARCHITECTURAL DESCRIPTION OF THE XRT79L71 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-
CHANNEL FRAMER WITH LIU IC - POS-PHY/PPP APPLICATIONS (SEE 79L71-PPP-ARC-DESC.PDF)
104
ORDERING INFORMATION .......................................................................................... 105
PACKAGE DIMENSIONS .............................................................................................. 105
208 SHRINK THIN BALL GRID ARRAY (17.0 MM X 17.0 MM, STBGA) ............................................... 105
REVISION HISTORY .................................................................................................................................... 106


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