Table of Contents
Contents
Page
Preliminary Data Sheet
October 2000
T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator-II)
2
Lucent Technologies Inc.
Features ................................................................................................................................................................... 1
T1/E1 Line Interface Features............................................................................................................................... 1
Power Requirements and Package....................................................................................................................... 1
T1/E1 Framer Features......................................................................................................................................... 1
Facility Data Link Features.................................................................................................................................... 1
Microprocessor Interface....................................................................................................................................... 1
Applications........................................................................................................................................................... 1
Feature Descriptions .............................................................................................................................................. 12
T1/E1 Line Interface Features............................................................................................................................. 12
T1/E1 Framer Features....................................................................................................................................... 12
Facility Data Link Features.................................................................................................................................. 13
User-Programmable Microprocessor Interface ................................................................................................... 13
Functional Description............................................................................................................................................ 14
Pin Information ....................................................................................................................................................... 18
Line Interface Unit: Block Diagram......................................................................................................................... 25
Line Interface Unit: Receive ................................................................................................................................... 25
Data Recovery..................................................................................................................................................... 25
Jitter Accommodation and Jitter Transfer Without the Jitter Attenuator.............................................................. 26
Receive Line Interface Configuration Modes ...................................................................................................... 26
Line Interface Unit: Transmit .................................................................................................................................. 32
Output Pulse Generation..................................................................................................................................... 32
LIU Transmitter Configuration Modes ................................................................................................................. 33
LIU Transmitter Alarms ....................................................................................................................................... 33
DSX-1 Transmitter Pulse Template and Specifications ...................................................................................... 34
CEPT Transmitter Pulse Template and Specifications ....................................................................................... 36
Line Interface Unit: Jitter Attenuator....................................................................................................................... 37
Generated (Intrinsic) Jitter................................................................................................................................... 37
Jitter Transfer Function ....................................................................................................................................... 37
Jitter Accommodation.......................................................................................................................................... 38
Jitter Attenuator Enable (Transmit or Receive Path)........................................................................................... 38
Line Interface Unit: Loopbacks............................................................................................................................... 41
Full Local Loopback (FLLOOP)........................................................................................................................... 41
Remote Loopback (RLOOP)............................................................................................................................... 41
Digital Local Loopback (DLLOOP)...................................................................................................................... 41
Line Interface Unit: Other Features ........................................................................................................................ 41
LIU Powerdown (PWRDN).................................................................................................................................. 41
Loss of Framer Receive Line Clock (LOFRMRLCK Pin)..................................................................................... 41
In-Circuit Testing and Driver High-Impedance State (3-STATE)......................................................................... 41
LIU Delay Values................................................................................................................................................. 42
SYSCK Reference Clock........................................................................................................................................ 42
Line Interface Unit: Line Interface Networks........................................................................................................... 43
LIU-Framer Interface.............................................................................................................................................. 46
LIU-Framer Physical Interface............................................................................................................................. 46
Interface Mode and Line Encoding...................................................................................................................... 47
DS1: Alternate Mark Inversion (AMI)................................................................................................................... 48
DS1: Zero Code Suppression (ZCS)................................................................................................................... 48
CEPT: High-Density Bipolar of Order 3 (HDB3).................................................................................................. 49
Frame Formats....................................................................................................................................................... 49
T1 Framing Structures......................................................................................................................................... 49