15.10.1.3 IGLOO and ProASIC3

IGLOO (excluding IGLOOe) and ProASIC3 (excluding ) devices have two, four, or eight I/O banks surrounding the chip, one per side, numbered 0-1, 0-3, or 0-7, respectively. Each I/O bank has dedicated resources for an input/output supply voltage (VCCI). Because of these dedicated resources, you can assign only I/Os with compatible standards to the same I/O bank. The following table shows the required voltage values and their compatible I/O standards.

VCCICompatible I/O Standards
3.3VLVTTL, PCI 3.3, LVPECL, LVCMOS
2.5VLVCMOS 2.5/5.0, LVDS
VCCICompatible I/O Standards
1.8VLVCMOS 1.8
1.5VLVCMOS 1.5
1. 2VLVCMOS 1.2
Note: Only ProASIC3 (A3PL), IGLOOe V2 only, IGLOO V2, and IGLOO PLUS support 1.2 voltage. On some dies, the left and right side of the chip have a different selection of I/O standards (LVDS/LVPECL).

Because the dies do not need an input referenced voltage (VREF), the Use Pin for VREF and Highlight VREF Range commands are unavailable from the right-click menu. Also, because the low-power mode and input delay attributes are not available, the More Attributes button is not available in the I/O Bank Settings dialog box.

Note: IGLOO and ProASIC3 low-cost devices do not support the Input Delay attribute. For more about I/O banks, see the datasheet for your device.