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Altera_Forum's avatar
Altera_Forum
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18 years ago

Using JTAG as General I/O

Hi,

I'm using a MAX 7000S EPM7064S and need the JTAG pins to be used as general I/O pins once the device has been programmed. Does anyone have any ideas?

3 Replies

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

    Hello dth21,

    Sorry but JTAG programming pins are dedicated IO and can not be used as general purpose I/O (I believe this is true for all families).

    Regards,

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

    Thanks, wizard...

    "The force is strong with this one... "

    Apologies for the erroneous advice, dth21

    skids

    BTW: The tcl to allow JTAG pins for user IO is:

    set_global_assignment -name MAX7000_ENABLE_JTAG_BST_SUPPORT OFF