TFRA08C13 Просмотр технического описания (PDF) - Agere -> LSI Corporation
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TFRA08C13 Datasheet PDF : 188 Pages
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TFRA08C13 OCTAL T1/E1 Framer
Preliminary Data Sheet
October 2000
Table of Contents
Contents
Page
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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