AR# 4016: Foundation Schematic: How to add parameters to Foundation Symbols Parameters list
AR# 4016
Foundation Schematic: How to add parameters to Foundation Symbols Parameters list
Description
KEYWORDS: Symbol Parameters, Foundation Schematic Editor, Susie.ini
URGENCY: Standard
GENERAL DESCRIPTION Sometimes customer wants to add a parameter to the Foundation Symbols Parameters list so that it may be easily used repeatedly for multiple symbols.
For example he/she may want to add a XILINX attribute called LOC for pin locking or he/she may want to delete a parameter that had been put by mistake.
Solution
In Foundation Schematic Editor, if you double click on a instance, the Symbol Properties template will be opened. In the pull_down menu for "Name" field in the "Parameters" section, a list of available Symbol Parameters that you may want to pass down to a place and route tool is given.
To add a new parameter, type in the new parameter name in the "Name" field and click on "Add" button. For example you can add a Xilinx Attribute called "LOC" to an IPAD if it has not been added as one of the available parameters. To specify the value, type in the parameter value for that instance in the "Description" field and click on "Add" button. For example "P22" for pin number 22 of a PQ package.
Once you have added a new parameter to a symbol, it will be available for other symbols as well. It will also be readily available for your later projects. That way, the list can grow from the original list, which contains only EXT, LEVEL, LIBVER, and DEVICE.
For more information on Xilinx attributes, please refer to the Libraries Guide.