DS2155 datasheet(3/238 Pages) DALLAS

3 / 238 page

DS2155

3 of 238

12.

I/O PIN CONFIGURATION OPTIONS.................................................................................................69

13.

LOOPBACK CONFIGURATION ..........................................................................................................71

13.1

PER-CHANNEL LOOPBACK ......................................................................................................................73

14.

ERROR COUNT REGISTERS ...............................................................................................................75

14.1

LINE-CODE VIOLATION COUNT REGISTER (LCVCR).............................................................................76

14.1.1

T1 Operation.......................................................................................................................................76

14.1.2

E1 Operation.......................................................................................................................................76

14.2

PATH CODE VIOLATION COUNT REGISTER (PCVCR) ............................................................................78

14.2.1

T1 Operation.......................................................................................................................................78

14.2.2

E1 Operation.......................................................................................................................................78

14.3

FRAMES OUT-OF-SYNC COUNT REGISTER (FOSCR)..............................................................................79

14.3.1

T1 Operation.......................................................................................................................................79

14.3.2

E1 Operation.......................................................................................................................................79

14.4

E-BIT COUNTER (EBCR).........................................................................................................................80

15.

DS0 MONITORING FUNCTION ...........................................................................................................81

16.

SIGNALING OPERATION .....................................................................................................................83

16.1

RECEIVE SIGNALING ...............................................................................................................................83

16.1.1

Processor-Based Signaling.................................................................................................................83

16.1.2

Hardware-Based Receive Signaling ...................................................................................................84

16.2

TRANSMIT SIGNALING.............................................................................................................................89

16.2.1

Processor-Based Mode .......................................................................................................................89

16.2.2

Software Signaling Insertion-Enable Registers, E1 CAS Mode..........................................................93

16.2.3

Software Signaling Insertion-Enable Registers, T1 Mode..................................................................95

16.2.4

Hardware-Based Mode.......................................................................................................................95

17.

PER-CHANNEL IDLE CODE GENERATION ....................................................................................96

17.1

IDLE-CODE PROGRAMMING EXAMPLES..................................................................................................97

18.

CHANNEL BLOCKING REGISTERS ................................................................................................101

19.

ELASTIC STORES OPERATION........................................................................................................104

19.1

RECEIVE SIDE ........................................................................................................................................107

19.1.1

T1 Mode ............................................................................................................................................107

19.1.2

E1 Mode............................................................................................................................................107

19.2

TRANSMIT SIDE .....................................................................................................................................107

19.2.1

T1 Mode ............................................................................................................................................108

19.2.2

E1 Mode............................................................................................................................................108

19.3

ELASTIC STORES INITIALIZATION .........................................................................................................108

19.4

MINIMUM DELAY MODE .......................................................................................................................108

20.

G.706 INTERMEDIATE CRC-4 UPDATING (E1 MODE ONLY)...................................................109

21.

T1 BIT-ORIENTED CODE (BOC) CONTROLLER..........................................................................110

21.1

TRANSMIT BOC.....................................................................................................................................110

Transmit a BOC ..............................................................................................................................................110

21.2

RECEIVE BOC .......................................................................................................................................110

Receive a BOC.................................................................................................................................................110

22.

ADDITIONAL (SA) AND INTERNATIONAL (SI) BIT OPERATION (E1 ONLY) ......................113

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