Answers Database
CPLD: XC9500/XL: How to set FAST slew rate for 9K outputs in PLUSASM and ABEL?
Record #983
Product Family: Hardware
Product Line: 9500
Product Part: 9500
Problem Title:
CPLD: XC9500/XL: How to set FAST slew rate for 9K outputs in PLUSASM and ABEL?
Problem Description:
Urgency: standard
General Description
Procedure to set slew rate for the xc9500 outputs in PLUSASM and ABEL.
Solution 1:
In ABEL use:
XILINX PROPERTY 'FAST|SLOW [optional signal list]'; - for EDIF flow
OR
XEPLD PROPERTY 'FAST ON|OFF [optional signal list]'; - for PLUSASM flow
Notes:
1. If no signal list follows "FAST ON" , *all* outputs are set to FAST
slew rate.
2. Only one FAST statement is allowed in the design.
3. Default slew rate in M1 is FAST and SLOW in XACT 6.x
Solution 2:
You can set the slew rate in Plusasm using:
FAST ON [optional signal list] - for FAST slew rate
OR
FAST OFF [optional signal list] - for SLOW slew rate
Notes:
1. If no signal list follows "FAST ON" in the PLD file, *all* outputs
are set to FAST slew rate.
2. Only one FAST statement is allowed in the design.
3. Default slew rate in M1 is FAST and SLOW in XACT 6.x
End of Record #983 - Last Modified: 12/09/99 14:09 | 
