1. Irakli MANDJAVIDZE DAPNIA, CEA Saclay, 91191 Gif-sur-Yvette, France
SRP: Architecture
Irakli MANDJAVIDZE
DAPNIA, CEA Saclay, Gif-sur-Yvette, France
ODE Workshop, LIP, 07-08/04/05

2. Overview SRP in ECAL Off-Detector Electronics
The Selective Read-out Processor
The SRP architecture
The Algorithm Board
ODE Workshop, LIP, 07-08/04/05

3. SRP in ECAL OFF-Detector Electronics
Partial trigger primitives
Trigger Towers
Front-ends
108 TCC
L1 accept
L1 Trigger
All event data
Classification flags: 3bit/TT
54 CCS
TCS
SRP 12 algorithm boards
Input pipeline delay of 6.4µs/RU
TTC
54 DCC
sTTS
Read-out flags: 3bit/TT
Operation
Receive TT flags from TCCs
Exchange frontier TT flags among ABs
Execute SR algorithm
Deliver SR flags to DCCs
Selected event data
HLT & DAQ
ODE Workshop, LIP, 07-08/04/05

4. The Selective Read-out Processor
Architecture
A 6U VME64x crate
12 identical Algorithm Boards
1-slot VME64x compliant
four ECAL partitions
Crate controller
Boundary scan controller (?)
Operation
Receive TT flags from 108 TCCs
from up to 12 TTCs per AB
Exchange frontier TT flags among ABs
among up to 8 ABs
Execute SR algorithm
Deliver SR flags to 54 DCCs
to up to 6 DCCs per AB
Interfaces
Optical serial links for:
TCC-AB and AB-DCC
AB-AB
A TTC interface per AB
A TTS interface per partition
sTTS signals of 3 ABs merged
... and sent by any of the ABs
ODE Workshop, LIP, 07-08/04/05

5. Parallel optic modules
SRP Architecture
Algorithm Board
under development
2 boards expected in September
SRP crate
Left end-cap
Left ½ barrel
Right ½ barrel
Right end-cap
Rx: TCC input C B S A B A B A B A B A B A B A B A B A B A B A B A B
Tx: DCC output
Parallel optic modules
Rx: AB input
Four Partitions
Tx: AB output
TTC input
TTS input1
RJ45
TTS input2
TTS output
ODE Workshop, LIP, 07-08/04/05

6. SNAP12 MSA pluggable parallel optic modules
Algorithm Board P1 J0 P2
VME buffers
Power supply
Xilinx V2Pro xc2vp70-6-ff1704
BS controller & JTAG chain
Core FPGA
VME Serial links Algorithms
FPROMs
Memory
Clock synthesizer
TCS interface
SNAP12 MSA pluggable parallel optic modules
QPLL
TTCrx
T T C Rx
D C C Tx
A B Rx
A B Tx
RJ45 connectors
Aux. connector
TrueLite
TTS IN
TTS IN
TTS OUT
Cons., JTAG Ethernet
O/E
Same hardware for AB and AB Tester
ODE Workshop, LIP, 07-08/04/05