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Status of the Detector Dependent Unit
2 channel prototype
Giulio DellacasaINFN Torino
Cosmic challenge electronics meetingBologna, 24/01/2005
Bologna 24/01/2005 Giulio Dellacasa - INFN Torino 2
Input characteristics (reminder)
• VME 32 6U• 2 independent input channels (ROS8)• Deserializer (Texas Inst. TLK 1501) with input from:
– Optical receiver (Stratos Lightwave M2R-25-9-1-TL)
– Copper serial link (can’t be used for Magnet Test)
• Input FIFO 16 bit x 8k• Access to FIFO from deserializer or VME (debug)
Bologna 24/01/2005 Giulio Dellacasa - INFN Torino 3
TLK 1501
TLK 1501
VME BUS
A24
D32
INPUT FIFO A
INPUT FIFO B
DATA BUILDING BLOCK and
ERROR DETECTION
(Xilinx )
OUTPUT FIFO
S-LINK 64 SENDER
OPTICAL LINK OPTICAL LINK
COPPER LINK COPPER LINK
DATA OUTPUT
16 16
32 (64)
32
LED
Bologna 24/01/2005 Giulio Dellacasa - INFN Torino 4
Output characteristics(reminder)
• Output FIFO 32 (64) bit x 2k
• FIFO readable via:– VME, 32 bit words (25 MB/s)– s-link 64 (132 MB/s with 32 bit words)
• Format of data: carbon copy of data received from ROS8
• Header and trailer added
Bologna 24/01/2005 Giulio Dellacasa - INFN Torino 5
Bologna 24/01/2005 Giulio Dellacasa - INFN Torino 6
Status• Standalone tests in Torino:
– Fully tested and OK with VME– Fully tested and OK S-Link output
• Test in Madrid– Tested and OK with 2 channels input from
ROS-8 in Madrid and VME output
• Test in Legnaro– Tested with 2 channels input from ROS-8 in
VME and S-Link output (work in progress)
Bologna 24/01/2005 Giulio Dellacasa - INFN Torino 7
Needed for magnet test
• Total number of boards (4 available now) and optical receivers (to buy now)
• LVDS external CLK (from TTC)
• VME CPU for local access (Status and Control registers, configurations, local data readout)
• S-link readout hardware (transmitter)
• More tests in Legnaro if ROS-8 will be used OR
tests in Madrid if final ROS will be used