Preliminary Data Sheet
May 2001
TMXF28155/51 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
475
Agere Systems Inc.
21 28-Channel Framer Block Functional Description
Table of Contents
Contents
Page
21 28-Channel Framer Block Functional Description .......................................................................................... 475
21.1 28-Channel Framer Introduction ............................................................................................................. 479
21.1.1 DS0/E0 Switching Applications .................................................................................................... 479
21.2 Transport Applications ............................................................................................................................ 482
21.3 Framer-to-Line Interface Unit Physical Interface .................................................................................... 485
21.3.1 Line Interface References/Standards .......................................................................................... 485
21.3.2 Frame Formats ............................................................................................................................ 485
21.3.3 Transmit Framer Functions .......................................................................................................... 486
21.3.4 Framing References/Standards ................................................................................................... 486
21.4 DS1 Transparent Framing Format .......................................................................................................... 486
21.5 CEPT 2.048 Basic Frame Structure Transparent Framing Format ........................................................ 487
21.6 Receive Framer Nonalignment Mode (DS1/E1) ..................................................................................... 488
21.6.1 Loss of Frame Alignment Criteria ................................................................................................ 488
21.7 Frame Alignment Criteria ........................................................................................................................ 489
21.8 Receive and Transmit Signaling Processor ............................................................................................ 489
21.8.1 Signaling Introduction and Feature Description ........................................................................... 489
21.8.2 Signaling References/Standards ................................................................................................. 490
21.9 Receive Signaling Per-Link Feature Provisioning .................................................................................. 490
21.9.1 Signaling State Mode Source Selection ....................................................................................... 491
21.9.2 Signaling State Mode Selection ................................................................................................... 491
21.9.3 Signaling Source Selection .......................................................................................................... 491
21.9.4 Signaling Destination Selection ................................................................................................... 492
21.10 Optional Receive Signaling Features Provisioned for Each Link ......................................................... 494
21.10.1 Support of DS1 Robbed-Bit Stomping ....................................................................................... 494
21.10.2 Support of CEPT Time-Slot 16 Stomping .................................................................................. 494
21.10.3 Support of Signaling Debounce ................................................................................................. 494
21.10.4 Support of Japanese Handling Groups ..................................................................................... 494
21.11 Receive Signaling Global Feature Provisioning ..................................................................................... 494
21.11.1 Link Count Selection ................................................................................................................. 495
21.12 Other Receive Signaling Global Features .............................................................................................. 495
21.12.1 Support of Automatic Signaling Freeze on Framing Bit Errors .................................................. 495
21.12.2 Support of Change of Signaling State FIFO .............................................................................. 495
21.13 Receive Signaling Interrupts .................................................................................................................. 496
21.13.1 Maintenance of the Change of Signaling State FIFO Status Bits .............................................. 496
21.13.2 Maintenance of Handling Group Related Status Bits ................................................................ 496
21.14 Transmit Signaling Per-Link Feature Provisioning ................................................................................. 497
21.14.1 Signaling State Mode Source Selection .................................................................................... 497
21.14.2 Signaling State Mode Selection ................................................................................................ 498
21.14.3 Signaling Source Selection ....................................................................................................... 498
21.14.4 Signaling Destination Selection ................................................................................................. 500
21.15 Optional Transmit Signaling Features Provisioned for Each Link .......................................................... 501
21.15.1 Support of Automatic Maintenance of the Time-Slot 16 Remote Frame Alarm ........................ 501
21.15.2 Support of DS1 Robbed-Bit Stomping ....................................................................................... 501
21.15.3 Support of CEPT Time-Slot 16 Stomping .................................................................................. 501
21.15.4 Support of Signaling Debounce ................................................................................................. 501
21.15.5 Support of Japanese Handling Groups ..................................................................................... 501
21.15.6 Support of Zero-Code Suppression ........................................................................................... 501
21.16 Transmit Signaling Global Feature Provisioning .................................................................................... 502
21.16.1 Link-Count Selection ................................................................................................................. 502
21.17 Other Transmit Signaling Global Features ............................................................................................. 502
21.17.1 Support of Automatic Signaling Freeze on Framing Bit Errors .................................................. 502