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Altera_Forum's avatar
Altera_Forum
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15 years ago

HSMC LVDS pin direction.

I have a simple question regarding the LVDS on the HSMC connectors. I'm using Stratix-III development kit.

Can the LVDS pins be defined as either input or output? Or are they "locked" into a particular direction?

Please advise, thanks in advance,

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Stratix families have dedicated LVDS RX and TX pins, so the assignament can't be changed.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Thank you for your reply.

    OK, just for further clarification: so the Stratix-III pin AC11 connected to HSMC

    J18 pin 47 defined as HSMA_TX_P0, can ONLY be an LVDS output or redefined as

    a CMOS Input/Output 2.5V pin?

    Tschuess!
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    You have been asking for LVDS direction. All LVDS pins can be also used as single ended in- or ouput pin.