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Data Sheet
January 1999
T7698 Quad T1/E1 Line Interface and Octal T1/E1 Monitor
5
Lucent Technologies Inc.
List of Tables
Tables
Page
Table 1. Pin Descriptions .......................................................................................................................................11
Table 2. System Interface Pin Mapping .................................................................................................................15
Table 3. Microprocessor Configuration Modes ......................................................................................................16
Table 4. MODE [1—4] Microprocessor Pin Definitions ..........................................................................................17
Table 5. Microprocessor Input Clock Specifications ..............................................................................................18
Table 6. Primary (LIU) Register Bank ....................................................................................................................19
Table 7. Register Map for CODE Bits ....................................................................................................................23
Table 8. Digital Loss of Signal Standard Select .....................................................................................................25
Table 9. LOSSD and RCVAIS Control Configurations (Not Valid During Loopback Modes) .................................25
Table 10. DS1 RLIU Specifications ........................................................................................................................26
Table 11. CEPT RLIU Specifications .....................................................................................................................28
Table 12. Equalizer/Rate Control ...........................................................................................................................30
Table 13. Register Map for CODE Bits ..................................................................................................................31
Table 14. DSX-1 Pulse Template Corner Points (from CB119) .............................................................................32
Table 15. DS1 Transmitter Specifications ..............................................................................................................33
Table 16. CEPT Transmitter Specifications ...........................................................................................................34
Table 17. Loopback Control ...................................................................................................................................39
Table 18. AMI Encoding .........................................................................................................................................41
Table 19. DS1 B8ZS Encoding ..............................................................................................................................41
Table 20. ITU HDB3 Coding and DCPAT Binary Coding .......................................................................................42
Table 21. Alarm Registers ......................................................................................................................................43
Table 22. Alarm Mask Registers ............................................................................................................................44
Table 23. Global Control Register (0100) ..............................................................................................................44
Table 24. Global Control Register (0101) ..............................................................................................................45
Table 25. Channel Configuration Registers (0110—1001) ....................................................................................45
Table 26. Channel Configuration Register (1011) ..................................................................................................46
Table 27. Control Register (1100) ..........................................................................................................................46
Table 28. Global Index Register .............................................................................................................................47
Table 29. T-Carrier Hierarchy ................................................................................................................................51
Table 30. D4 Superframe Format ..........................................................................................................................52
Table 31. DDS Channel 24 Format ........................................................................................................................52
Table 32. Extended Superframe (ESF) Structure ..................................................................................................54
Table 33. T1 Loss of Frame Alignment Criteria .....................................................................................................55
Table 34. T1 Frame Alignment Procedures ...........................................................................................................56
Table 35. Allocation of Bits 1 to 8 of the FAS Frame and the NOT FAS Frame ....................................................58
Table 36. ITU CRC-4 Multiframe Structure of the T7698 .......................................................................................60
Table 37. Red Alarm Conditions ............................................................................................................................66
Table 38. Remote Frame Alarm Conditions ...........................................................................................................66
Table 39. Alarm Indication Signal Conditions ........................................................................................................67
Table 40. Sa6 Bit Coding Recognized by the T7698 Receive Frame Monitor .......................................................68
Table 41. Sa6 Bit Coding of NT1 Interface Events Recognized by the T7698 Receive Frame Monitor ................69
Table 42. AUXP Synchronization and Clear Synchronization Process ..................................................................69
Table 43. T7698 Event Counters Definition ...........................................................................................................70
Table 44. T7698 Errored Second Counters Definition ...........................................................................................71
Table 45. T7698 Bursty Errored Second Counters Definition ................................................................................72
Table 46. T7698 Severely Errored Second Counters Definition ............................................................................72
Table 47. T7698 Unavailable Second Counter Definition ......................................................................................72
Table 48. Frame Monitor Registers ........................................................................................................................73
Table 49. Framer_PR0 Frame Monitor Mode Bits Decoding .................................................................................74
Table 50. Framer_PR0 Line Code Option Bits Decoding ......................................................................................74
Table 51. CEPT CRC-4 Option Bits Decoding .......................................................................................................74
Table 52. Frame Monitor Control Option Register (Framer_PR2) .........................................................................75
Table 53. Frame Monitor CEPT Data Link Option Register (Framer_PR3) ...........................................................75