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TI Home » TI E2E Community » Support Forums » Interface » Consumer & Computing » Consumer & Computing Forum » TSB41BA3-EP TPA_P and TPA_N Swapped
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TSB41BA3-EP TPA_P and TPA_N Swapped

TSB41BA3-EP TPA_P and TPA_N Swapped

This question is not answered
Scott Kerstein
Posted by Scott Kerstein
on Mar 29 2012 16:46 PM
Expert1245 points

TSB41BA3-EP TI 1394 chip was miswired such that the TPA_P and TPA_N were swapped in cabling.  Everything works fine.  I can find no documentation in either the 1394 spec or in the TI spec that would allow this.  Is there a problem with this miswiring?

Thanks, in advance.

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  • Undrea Fields
    Posted by Undrea Fields
    on Mar 30 2012 08:47 AM
    Expert4360 points

    No issues exist with swapping +/- on the differential pair.

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  • Scott Kerstein
    Posted by Scott Kerstein
    on Apr 05 2012 09:26 AM
    Expert1245 points

    Thanks, where is this documented?

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  • Undrea Fields
    Posted by Undrea Fields
    on Apr 11 2012 08:47 AM
    Expert4360 points

    This is not documented as the signals are expected to be matching as labeled.  Typically, differential signals +/- channels can be swapped, but there are some cases where this may cause issues particularly in testing.

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