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Digital Video Transfer (WP2). Digital Video Switch Unit. Video Switch Subunit. VIDEO HUB. HUB Video Subsystem. Changes in D1f: Video Switch Unit and Video Hub Technical Document v.0.4. USB Connection updated System commands in a separate document Power Consumption added

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Digital Video Transfer (WP2)

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Digital Video Transfer (WP2)

22 Nov 2005


Digital Video Switch Unit


Video Switch Subunit


VIDEO HUB


HUB Video Subsystem


Changes in D1f: Video Switch Unit and Video Hub Technical Document v.0.4

  • USB Connection updated

  • System commands in a separate document

  • Power Consumptionadded

  • Other minor changes


Digital Video Transfer research, D1e

  • No changes in the document

  • Tests have started

  • 1: Gefen Cable extender

    • based on MAX3815 cable equalizer circuit

  • 2: Silicon Image test board

    • based on SiI 7161 circuit, which has internal cable equalizer


Preliminary cable tests and the results

  • Test environment

    - Dell PC with DVI connector supporting 1200 x 1600 x 60Hz mode

    - ACER 20" 1600 x 1200 x 60Hz UXGA monitor

    - Nokia Monitor Test Program

  • Test 1

    - Lindy (www.lindy.com) high quality cable

    - 15 m Super long distance cable

    - 10 m Super long distance extension cable

    - Result: 15 m cable worked well and 25 m (connected)

    also worked without any errors !! (Pict1, Pict2)


Supported Display modes


Test result 2

  • Gefen "DVI Super Booster" cable extender

    - 25 m above mentioned Lindy cables

    connected

    - 20 m lower quality cable (Clicktronic)

  • Result: Worked well with both cables

    More margin with Lindy cable


Test result 3

  • Silicon Image CP7169 Evaluation board as "cable extender"

  • 25 m Lindy cable

  • Result: Worked without erros with 25 m Lindy cables Lower quality Clicktronic cables were not tested because the evaluation board does not support the DVI-I connector


Next tests to do

  • Try to find out a way to do preliminary test with category (cat 6, cat 7) cables using RJ-45 connectors

  • DVI – RJ45 adapters


Video Switch Unit schematics, D2a

  • Page 1: Block Diagram

  • Page 2: FPGA

  • Page 3: Bus_A_Rcv, Page4: Bus_A_Tr

  • Page 5: DVI_From_PC, Page6: To_Monitor

  • Page 7: Control (microcontroller)

  • Page 8: Bus_B_Rcv, Page 9: Bus_B_Tr

  • Page 10: Power + To_Table_Unit


25 ohms load

  • Silicon Image has confirmed that their circuits work on 25 ohms load

  • Reserved space on the PCB for DVI switch


Video Switch Unit PCB, D2b

  • Not yet finalised

  • Mechanics issues


Video Switch Unit FPGA, D2c

  • VHDL code written and simulated

  • place & route made

  • meets time constraints

    • faster circuit, stepping 1 (Spartan 3E)


Video Switch Unit SW, D2d

  • Going on, Jere is doing

  • Progressing well


Tasks to do, WP2 Design

  • Finalise PCB design

  • CAT6 cable tests

  • Video hub design

  • Software for Video Switch Unit


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