13.25.3 Device Variations

The second screen in the Device Selection Wizard enables you to set reserve JTAG and probe pins and the default I/O standard.

To select reserve pins and default I/O standard:
  1. Select your reserve pins:
  2. Select the Reserve JTAG check box to reserve the JTAG pins “TDI,” “TMS,” "TCK,” and “TDO” during layout.
  3. Select the Reserve JTAG Reset check box to reserve the JTAG reset Pin “TRST” during layout.
  4. Select the Reserve Probe check box to reserve the Probe pins “PRA,” “PRB,” “SDI,” and “DCLK” during layout. Reserve Pins are not selectable for the Axcelerator, ProASIC, and ProASICPLUS families.
  5. Select an I/O attribute. The I/O Attributes section notifies you if your device supports the programming of I/O attributes on a per-pin basis. For the Axcelerator family, the I/O Attribute section allows you to set the default I/O standard for the I/O banks.
  6. Click Next to set operating conditions.