The following table shows which families support this constraint and which file formats and tools you can use to enter or modify it:
|
Families |
PDC |
ChipPlanner |
|
Fusion |
X |
X |
|
ProASIC3E |
X |
X |
|
ProASIC3 |
X |
X |
|
ProASIC PLUS |
|
|
|
Axcelerator |
X |
X |
|
ProASIC |
|
|
|
eX |
|
|
|
SX-A |
|
|
|
SX |
|
|
|
MX |
|
|
|
3200DX |
|
|
|
ACT3 |
|
|
|
ACT2/1200XL |
|
|
|
ACT1 |
|
|
Use this constraint to set the I/O supply voltage (VCCI) for I/O banks.
I/Os are organized into banks. The configuration of these banks determines the I/O standards supported. Since each I/O bank has its own user-assigned input reference voltage (VREF) and an input/output supply voltage, only I/Os with compatible standards can be assigned to the same bank.
For ProASIC3E and Axcelerator devices, you can use the set_iobank PDC command to set the input/output supply voltage and the input reference voltage for an I/O bank. However, for ProASIC3 devices, you can use this command to set only the input/output supply voltage for an I/O bank.
For Axcelerator devices, you can also use the set_iobank command to set the input delay value and enable or disable the low-power mode for input and output buffers.
You can use one or more of the following commands or GUI tools to configure I/O banks:
PDC - set_iobank
ChipPlanner - Manually assigning technologies to I/O banks