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