XRT83SL28
xr
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
3.1.1 LOCAL ANALOG LOOPBACK .................................................................................................................................. 24
FIGURE 18. SIMPLIFIED BLOCK DIAGRAM OF LOCAL ANALOG LOOPBACK ......................................................................................... 24
3.1.2 REMOTE LOOPBACK................................................................................................................................................ 24
FIGURE 19. SIMPLIFIED BLOCK DIAGRAM OF REMOTE LOOPBACK.................................................................................................... 24
3.1.3 DIGITAL LOOPBACK................................................................................................................................................. 25
FIGURE 20. SIMPLIFIED BLOCK DIAGRAM OF DIGITAL LOOPBACK..................................................................................................... 25
3.2 LINE CARD REDUNDANCY ........................................................................................................................... 26
3.2.1 1:1 AND 1+1 REDUNDANCY WITHOUT RELAYS.................................................................................................... 26
3.2.2 TRANSMIT INTERFACE WITH 1:1 AND 1+1 REDUNDANCY.................................................................................. 26
FIGURE 21. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT INTERFACE FOR 1:1 AND 1+1 REDUNDANCY ......................................... 26
3.2.3 RECEIVE INTERFACE WITH 1:1 AND 1+1 REDUNDANCY..................................................................................... 27
FIGURE 22. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE INTERFACE FOR 1:1 AND 1+1 REDUNDANCY ........................................... 27
3.2.4 N+1 REDUNDANCY USING EXTERNAL RELAYS ................................................................................................... 27
3.2.5 TRANSMIT INTERFACE WITH N+1 REDUNDANCY ................................................................................................ 28
FIGURE 23. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT INTERFACE FOR N+1 REDUNDANCY...................................................... 28
3.2.6 RECEIVE INTERFACE WITH N+1 REDUNDANCY ................................................................................................... 29
FIGURE 24. SIMPLIFIED BLOCK DIAGRAM OF THE RECEIVE INTERFACE FOR N+1 REDUNDANCY........................................................ 29
3.3 POWER FAILURE PROTECTION .................................................................................................................. 30
3.4 OVERVOLTAGE AND OVERCURRENT PROTECTION ............................................................................... 30
3.5 NON-INTRUSIVE MONITORING .................................................................................................................... 30
FIGURE 25. SIMPLIFIED BLOCK DIAGRAM OF A NON-INTRUSIVE MONITORING APPLICATION............................................................... 30
4.0 SERIAL MICROPROCESSOR INTERFACE BLOCK ..........................................................................31
FIGURE 26. SIMPLIFIED BLOCK DIAGRAM OF THE SERIAL MICROPROCESSOR INTERFACE ................................................................. 31
4.1 SERIAL TIMING INFORMATION .................................................................................................................... 31
FIGURE 27. TIMING DIAGRAM FOR THE SERIAL MICROPROCESSOR INTERFACE ................................................................................ 31
4.2 16-BIT SERIAL DATA INPUT DESCRIPTION ............................................................................................... 32
4.2.1 R/W (SCLK1)............................................................................................................................................................... 32
4.2.2 A[5:0] (SCLK2 - SCLK7)............................................................................................................................................. 32
4.2.3 X (DUMMY BIT SCLK8).............................................................................................................................................. 32
4.2.4 D[7:0] (SCLK9 - SCLK16)........................................................................................................................................... 32
4.3 8-BIT SERIAL DATA OUTPUT DESCRIPTION ............................................................................................. 32
TABLE 6: MICROPROCESSOR REGISTER DESCRIPTION .................................................................................................................... 33
TABLE 7: MICROPROCESSOR REGISTER 0X00H BIT DESCRIPTION ................................................................................................... 35
TABLE 8: MICROPROCESSOR REGISTER 0X01H BIT DESCRIPTION ................................................................................................... 36
TABLE 9: MICROPROCESSOR REGISTER 0X02H BIT DESCRIPTION ................................................................................................... 36
TABLE 10: MICROPROCESSOR REGISTER BIT DESCRIPTION ............................................................................................................ 36
TABLE 11: MICROPROCESSOR REGISTER BIT DESCRIPTION ............................................................................................................ 38
TABLE 12: MICROPROCESSOR REGISTER BIT DESCRIPTION ............................................................................................................ 38
TABLE 13: MICROPROCESSOR REGISTER BIT DESCRIPTION ............................................................................................................ 39
ELECTRICAL CHARACTERISTICS ................................................................................41
TABLE 14: ABSOLUTE MAXIMUM RATINGS....................................................................................................................................... 41
TABLE 15: DC DIGITAL INPUT AND OUTPUT ELECTRICAL CHARACTERISTICS .................................................................................... 41
TABLE 16: AC ELECTRICAL CHARACTERISTICS ............................................................................................................................... 41
TABLE 17: POWER CONSUMPTION.................................................................................................................................................. 41
TABLE 18: RECEIVER ELECTRICAL CHARACTERISTICS ..................................................................................................................... 42
TABLE 19: E1 TRANSMITTER ELECTRICAL CHARACTERISTICS .......................................................................................................... 43
ORDERING INFORMATION.............................................................................................44
PACKAGE DIMENSIONS.................................................................................................44
REVISION HISTORY.......................................................................................................................................45
II
EXAR [ EXAR CORPORATION ]
