AR# 3125: M1.4 CPLD - Automatic Local Feedback optimization not yet supported for XC9500
M1.4 CPLD - Automatic Local Feedback optimization not yet supported for XC9500
Keywords: xc9500, local feedback, loc
General Description: Does the M1.4 CPLD fitter automatically optimize for local macrocell feedback?
The Automatic Feedback Optimization feature described in the CPLD Schematic Design Guide and CPLD Synthesis Design Guide is not yet supported. XC9500 Local Feedback still requires logic to be explicitly mapped to the same function block using properties of the form "LOC=FBnn", where FB is the function block, and nn is the macrocell.