Crates

• 6 LAr receiver crates (2 EM barrel, 2 EM endcap, 2 Hadron endcap plus FCAL)
  • 16 Receiver modules
  • 2 Monitor modules (double width)
  • 1 SPAC interface module
• 2 Tile receiver crates (as above)
• 8 Receiver summing patch panels (4 quadrants * 2 ends)
• 8 PreProcessor crates (organisation roughly as the receiver crates)
  • 16 PPMs (15 in some crates)
  • 1 TCM (with VME64x adapter card)
  • 1 CPU
• 4 Cluster Processor crates (phi quadrants)
  • 14 CPMs
  • 2 CMMs
  • 1 TCM (with VME-- adapter card)
  • 1 CPU
• 2 Jet/Et Processor crates (quadrants 0+2, 1+3)
  • 16 JEMs
  • 2 CMMs
  • 1 TCM (with VME-- adapter card)
  • 1 CPU
• 2 ROD crates (suggested organisation)
  • 4 PP slice data RODs
  • 2 CP slice data RODs
  • 2 CP RoI RODs
  • 1 JEP slice data ROD
  • 1 JEP RoI ROD
  • 1 TCM (with VME64x adapter card)
  • 1 BUSY module (?)
  • 1 CPU
• 1 TTC/BUSY crate
  • 1 TTCvi
  • 1 TTCvx (or similar)
  • >=1 BUSY module
  • 1 DCTPI module (double width)
  • 1 CPU

Receiver Module

• 64 channels
• 4 LAr signal cables (16 pairs)
• 8 Tile signal cables (4 with 9 or 10 pairs, 4 with 6 or 7 pairs)
• 4 output cables to PPMs (but see below)
• 16 channels (4*4 towers) per cable
• 1 output cable to summing interconnect (4 towers per cable)

Receiver Summing Interconnect

• 16 channels
• 4 input cables of 4 channels each (from receiver sum outputs)
• 1 output cable of 16 channels each (to normal receiver input)

PPM

• 64 channels
• 4 input cables from receivers
• 16 channels (4*4 towers) per cable
• 4 analog input daughter cards (1 per cable)
• 16 PPrMCMs, each containing
  • 4 channels
  • 4 FADCs
  • 1 PHOS4 timing chip
  • 1 PPrAsic
  • 3 LVDS transmitters (2 CP, 1 JEP)
• 1 Readout/merger FPGA
• 10 (8 + 2 fanout) 4-channel LVDS cables to CPMs (8 BCmuxed towers per cable)
• 5 (4 + 1 fanout) 4-channel LVDS cables to JEMs (4 0.2*0.2 jet sums per cable)
• 1 (fanout) 2-channel LVDS cables to JEMs (2 0.2*0.2 jet sums per cable)
• 1 Glink output (slice data)

CPM

• 80=10*4*2 signals input (40 each BCMuxed EM and Hadronic)
• 80=20*4 towers direct input (76=19*4 used)
• 64=16*4 towers processed
• 60=20*3 towers sent to neighbours
• 60=20*3 towers received from neighbours
• 80 LVDS receivers
• 20 serialiser FPGAs
• 8 CP algorithm FPGAs
• 2 Glink outputs (1 slice data, 1 RoI)

JEM

• 88=11*4*2 signals input (44 each EM and Hadronic 0.2*0.2 sums)
• 44=11*4 jet cells direct input (summed EM+Hadronic)
• 32=8*4 jet cells (summed EM+Hadronic) processed
• 33=11*3 jet cells sent to neighbours
• 33=11*3 jet cells received from neighbours
• 88 LVDS receivers
• 11 input/Et FPGAs
• 1 jet algorithm FPGA
• 2 Glink outputs (1 slice data, 1 RoI)

CMM

• 16 CPM/JEMs processed
• 24 bits per CPM/JEM
• 3 input cables to system CMM from other crate CMMs (CP system)
• 2 input cables to system CMM from other crate CMM (JEP system)
• 1 output cable from crate CMMs to system CMM (CP system)
• 2 output cables from crate CMM to system CMM (JEP system)
• 2 output cables to CTP (only from system CMMs)
• 64 LVDS pairs per cable
• 2 merger FPGAs (1 for crate, 1 for system)
• 2 Glink outputs (1 slice data, 1 RoI)

TCM

• 1 TTC optical fibre input
• 1 CANbus output (via ELMB?)
• 18 electrical backplane outputs
• 4 electrical front panel outputs

Common Processor Backplane

Readout Driver (ROD)

• 18 Glink inputs
• Up to 4 Slink outputs (via rear transition module)
• 1 BUSY output
• 1 AUX output?

ROD allocation

Source	N.RODs	N.inputs/ROD	N.outputs/ROD
PP data	8	16 PPMs	4
CP data	4	16 = 2 CMMs + 14 CPMs	2
CP RoIs	4	16	2
JEP data	2	18 = 2 CMMs + 16 JEMs	4
JEP RoIs	2	18	2
Total	20

Slinks

• 32 Slinks to ROS from PP RODs
• 12 Slinks to ROS from CP RODs (8 data, 4 RoIs)
• 10 Slinks to ROS from JEP RODs (8 data, 2 RoIs)
• Total of 54 Slinks to ROS
• 4 Slinks to RoIB from CP RODs
• 2 Slinks to RoIB from JEP RODs
• Total of 6 Slinks to RoIB

Cabling Document

Detector-Receiver Cabling

Source	N.pairs required	N.Cables (C side)	N.Cables (A side)	N.Cables (total)
LAr EM Barrel	15	64	64	128
LAr EM Endcap	16	56	56	112
LAr HEC	16	48	48	96
LAr FCAL	16	12	12	24
Tile Barrel	9 (10)	64	64	128
Tile Ext.Barrel	6 (7)	64	64	128
Total		308	308	616

TileCal Patch Panel

Receiver-PPM Cabling

• PPM_4 (EM): the EM barrel/endcap transition requires that two receiver outputs are combined to a single PPM input. There are 8 EM instances of PPM_4 (2 ends * 4 quadrants) making 32 special PPM input cables from 64 receiver outputs. Each receiver output provides 8 signals.
• PPM_4 (had): the TileCal/HEC transition is more complicated. Here one HEC output cable must be split into four sets of 4 signals and combined with four TileCal receiver outputs (each providing 12 signals) making four PPM inputs. This assumes we will be able to arrange the TileCal receivers like the EM barrel which should be OK in principle I think, as long as we can get all the cables into them. There are 8 hadronic PPM_4s, making 32 PPM inputs coming from 40 receiver outputs.
• PPM_7 (both): here one receiver output is split into two PPM inputs in both EM and hadronic layers, ie 64 special PPM input cables from 32 receiver outputs.
• PPM_9 (had): each hadronic FCAL PPM input comes from combining two receiver outputs providing 8 signals each. There are two hadronic PPM_9s in the system, so this represents 8 PPM input cables from 16 receiver outputs.

The total numbers of normal and special cables are as follows:

	PPM Inputs	Connection	Receiver Outputs
4 * (5 * 16 + 8 + 2)	360	normal 1:1 cables	360
4 * (8 + 2)	40	Rec:PPM 2:1 connections	80
4 * 8	32	Rec:PPM 5:4 connections	40
4 * 16	64	Rec:PPM 1:2 connections	32
	496	Total input/outputs	512

There are a total of 124 PPMs (16 each of PPM_1 to PPM_7, 8 PPM_8s and 4 PPM_9s). There are (probably) 32 TileCal Receivers and 96 LAr Receivers: 32 for EM barrel, 32 for EM endcap, 26 for HEC and 6 for FCAL (2 EM, 4 hadronic).

PPM-CPM Cabling

• From one PPM:
• 8 4-channel LVDS cables to CPM in same quadrant
• 1 4-channel LVDS cable to CPM in quadrant+1
• 1 4-channel LVDS cable to CPM in quadrant-1
• To one CPM:
• 16 4-channel LVDS cables from 2 PPMs (EM+had) in same quadrant
• 2 4-channel LVDS cables from 2 PPMs (EM+had) in quadrant-1
• 2 4-channel LVDS cables from 2 PPMs (EM+had) in quadrant+1

PPM-JEM Cabling

• From one PPM:
• 4 4-channel LVDS cables to JEM in same quadrant
• 1 2-channel LVDS cable to JEM in quadrant+1
• 1 4-channel LVDS cable to JEM in quadrant-1
• To one JEM:
• 16 4-channel LVDS cables from 4 PPMs (EM+had, 2*0.4 in eta) in same quadrant
• 4 2-channel LVDS cables from 4 PPMs (EM+had, 2*0.4 in eta) in quadrant-1
• 4 4-channel LVDS cables from 4 PPMs (EM+had, 2*0.4 in eta) in quadrant+1
• NB FCAL cabling is more complex: see PPM and JEM module specs and/or the cabling document.

CMM-CMM Cabling

CMM-CTP Cabling