XRT83SL28IV datasheet(6/47 Pages) EXAR

6 / 47 page

XRT83SL28

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

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