Changes between Version 6 and Version 7 of CROCproto3


Ignore:
Timestamp:
Jun 7, 2006, 6:37:16 PM (18 years ago)
Author:
machefer
Comment:

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  • CROCproto3

    v6 v7  
    55[[TOC(inline)]]
    66
    7 == Problem identified ==
     7== Problems identified ==
    88
    99* Inversion of the SDA and SCL signal between the LV010 (near RJ45 of the front face of the CROC) and the SPECS Mezzanine connector
    1010
    1111* Adaptation of the SPECS Signal in the case when the SPECS Mezzanine is simply a repeater
     12
     13* Polarisation of the 2 drivers going to the backplane for specs sda- signals. the sda- is not well polarised and the V divider on the +sda simply changes the common mode. This leads to a bad pulse when the command to the driver is released. The sda- pin has to be polarised to GND with for example a 5k resistor. Then the sda+/- signals are well polarised.
     14
     15 
    1216
    1317== CROC proto 3 : Fabrication status ==