TFRA08C13 datasheet(2/188 Pages) AGERE

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Table of Contents

Contents

Page

Preliminary Data Sheet

TFRA08C13 OCTAL T1/E1 Framer

October 2000

Lucent Technologies Inc.

Features ................................................................................................................................................................... 1

T1/E1 Framer Features ......................................................................................................................................... 1

Facility Data Link Features ....................................................................................................................................... 1

Microprocessor Interface .......................................................................................................................................... 1

Applications .............................................................................................................................................................. 1

Feature Descriptions .............................................................................................................................................. 10

T1/E1 Framer Feature Descriptions .................................................................................................................... 10

Functional Description ............................................................................................................................................ 11

Pin Information ....................................................................................................................................................... 15

LIU-Framer Interface .............................................................................................................................................. 29

LIU-Framer Physical Interface............................................................................................................................. 29

Line Encoding...................................................................................................................................................... 31

DS1: Zero Code Suppression (ZCS)................................................................................................................... 31

CEPT: High-Density Bipolar of Order 3 (HDB3).................................................................................................. 33

Frame Formats ....................................................................................................................................................... 34

T1 Framing Structures......................................................................................................................................... 34

T1 Loss of Frame Alignment (LFA) ..................................................................................................................... 41

T1 Frame Recovery Alignment Algorithms.......................................................................................................... 42

T1 Robbed-Bit Signaling ..................................................................................................................................... 43

CEPT 2.048 Basic Frame, CRC-4 Time Slot 0, and Signaling Time Slot 16 Multiframe Structures ................... 45

CEPT 2.048 Basic Frame Structure .................................................................................................................... 46

CEPT Loss of Basic Frame Alignment (LFA) ...................................................................................................... 48

CEPT Loss of Frame Alignment Recovery Algorithm ......................................................................................... 48

CEPT Time Slot 0 CRC-4 Multiframe Structure .................................................................................................. 49

CEPT Loss of CRC-4 Multiframe Alignment (LTS0MFA).................................................................................... 50

CEPT Loss of CRC-4 Multiframe Alignment Recovery Algorithms .....................................................................51

CEPT Time Slot 16 Multiframe Structure ............................................................................................................ 55

CEPT Loss of Time Slot 16 Multiframe Alignment (LTS16MFA)......................................................................... 56

CEPT Loss of Time Slot 16 Multiframe Alignment Recovery Algorithm.............................................................. 56

CEPT Time Slot 0 FAS/NOT FAS Control Bits....................................................................................................... 56

FAS/NOT FAS Si- and E-Bit Source ................................................................................................................... 56

NOT FAS A-Bit (CEPT Remote Frame Alarm) Sources ..................................................................................... 57

NOT FAS Sa-Bit Sources.................................................................................................................................... 57

Sa Facility Data Link Access ............................................................................................................................... 58

NOT FAS Sa Stack Source and Destination ....................................................................................................... 59

CEPT Time Slot 16 X0—X2 Control Bits............................................................................................................. 61

Signaling Access .................................................................................................................................................... 61

Transparent Signaling ......................................................................................................................................... 61

DS1: Robbed-Bit Signaling.................................................................................................................................. 61

CEPT: Time Slot 16 Signaling............................................................................................................................. 62

Auxiliary Framer I/O Timing ................................................................................................................................... 63

Alarms and Performance Monitoring ...................................................................................................................... 67

Interrupt Generation ............................................................................................................................................ 67

Alarm Definition ................................................................................................................................................... 67

Event Counters Definition ................................................................................................................................... 73

Loopback and Transmission Modes.................................................................................................................... 75

Line Test Patterns ............................................................................................................................................... 78

Receive Line Pattern Monitor—Using Register FRM_SR7 ................................................................................. 80

Automatic and On-Demand Commands ............................................................................................................. 82

Facility Data Link .................................................................................................................................................... 84

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