LRB Top Photo

LRB and LTB V2 Documentation


LRB Bottom Photo
BACK   to D0STT Page. BACK   to CMS HCAL Page. Maintained by E. Hazen. Updated 5/20/05

This page documents the LRB and LTB, which are high-speed 3-channel serial link transmitter and reciever boards. They are used for the CMS experiment HCAL readout at CERN, and for the experiment Silicon Track Trigger at Fermilab.

Links:

LRB_Report1_12.doc
LRB_Report1_12.pdf
LRB Implementation report V1.12 (firmware V2_19)
Eric's LRB Notes New! Some notes on buffering in the LRB
Plus Special Debugging Firmware
LTB_Report.doc
LTB_Report.pdf
LTB Design Documentation (v1.1 2/20/01))
brief.pdf LRB Protocol/Connector Brief (8/26/06 update)
LRB_V2_data_format.pdf LRB Link Data format (8/6/01)
Hamming.doc
Hamming.pdf
Hamming Code and Link Data Format (v1.0 3/25/01)
LRB_Features.pdf Required updates to V1
Blocks.pdf Block Diagram

PCB Layout and Assembly

Current Revisions
Transmitter V2.5 New RJ-45 connectors for links
  LTB2_5_fab.zip Fabrication files (gerber, including paste masks)
  LTB_sch.pdf Schematic
  LTB_BOM_24Apr02.xls
LTB_ASSY.pdf
Parts List
Assembly docs including parts list
Transmitter V2.1  
  LTB_PCB2.zip Fabrication files (gerber, including paste masks)
  LTBv2_1_BOM.pdf
LTBv2_1_BOM.xls
Bill of materials
Receiver V2.9 New RJ-45 connectors for links
  LRB2_9_fab.zip Fabrication files (gerber, including paste masks)
  LRB_Sch.pdf Schematic
  LRB_BOM_24Apr02.xls
LRB_ASSY.pdf
Parts List
Assembly documents including parts list
Receiver V2.4  
  LRB_V2_4_SCH.pdf Schematic
  LRBv2_4_FAB.zip Fabrication files (gerber, including paste masks)
  LRBv2_4_BOM.pdf
LRBv2_4_BOM.xls
Bill of materials
Old Revisions
Receiver V2.0  
  sch_9Nov00.pdf Schematic - AS BUILT
  assembly_docs.pdf Assembly Documentation
  BOM_final.xls Bill of Materials (spreadsheet file)
  LRB_2A.zip Gerber files of layout

Older Documents