Answers Database
M1 CPL: PWR_MODE attribute cannot be placed on non-logic symbols
Record #2327
Product Family: Software
Product Line: CPLD Implementation
Product Part: hitop
Product Version: 1.3
Problem Title:
M1 CPL: PWR_MODE attribute cannot be placed on non-logic symbols
Problem Description:
Urgency: Standard
General Description:
When the PWR_MODE attribute is applied in a UCF file, it must
be attached to an "logic symbol" instance. If it is attached
to a net you will see the following warning from the fitter
indicating that the attribute is not accepted:
WARNING:xr5021 - Parameter 'PWR_MODE' applied to non-logic
symbol '$1N70' (e.g., IPAD, IBUF, OBUF). You can only use this
parameter on macrocell logic symbols.
NOTE: PWR_MODE is allowed on an OPAD. In this case it will be
backward traced to the macrocell associated with it.
Solution 1:
Use the following syntax in the UCF file to attach the property
to the logic symbol:
<INPUT>
INST $1I21 PWR_MODE=LOW;
</INPUT>
DO NOT use the following syntax in the UCF, which would attach
the property to a net:
NET $1N70 PWR_MODE=LOW;
End of Record #2327 - Last Modified: 08/29/97 12:36 |
