Answers Database

Foundation: XC4000 CD4CLE macro counts independent of clock enable


Record #1342

Product Family:  Software

Product Line:  Aldec

Problem Title:
Foundation: XC4000 CD4CLE macro counts independent of clock enable


Problem Description:
The X4000U library macro CD4CLE (version 5.2.1) for the
Foundation Schematic Capture program is implemented
incorrectly.  This macro is implemented correctly with
every other family, except for the XC4000 family.
The problem can cause it to continue counting when the
CE pin is inactive.


Solution 1:

If you want this functionality you can copy the CD4CLE macro
from the X4000EU library:

1. In the Foundation Project Manager, select Applications->
   Library Manager.

2. Scroll down and double-click on the X4000EU library.  In
   the object list, select the CD4CLE macro.

3. In the Library Manager, select Object->Copy.  Select your
   project library as the destination and click Copy.  Click
   Close to close the X4000EU library.

4. Double-click on your project library to open it.  Select
   the CD4CLE macro.

5. In the Library Manager, select Object->Rename.  Rename the
   macro (this is to prevent possible problems during design
   translation and implementation).

6. Close the Library Manager.

7. Open the Schematic Editor and select File->Update
   Libraries.



End of Record #1342