Answers Database

M1.3 MAP, XC4000E/L/EX/XL: Map cannot use the DI input to source an HMAP(xc4000e/ex/xl)


Record #2289

Product Family:  Software

Product Line:  Merged Core

Problem Title:
M1.3 MAP, XC4000E/L/EX/XL: Map cannot use the DI input to source an
HMAP(xc4000e/ex/xl)



Problem Description:
keywords:  map di hmap

Urgency: standard

General Description:
The M1.3 Mapper currently cannot fit into a single CLB
functions which require three C inputs to directly drive the
HMAP function generator, even though it is supported in the
4000e/ex/xl architecture.  The problem is related to the
fact that Map currently does not support using the DI pin
unless it drives a flip-flop or RAM data input.


Solution 1:


As a workaround, you can create the desired configuration in
EPIC, generate a physical ("hard") macro from it, and
instantiate this macro in your design.

For more information on creating physical macros, please
refer to the (Xilinx Manual EPIC Design Editor Reference/User Guide).

Reference Number 12216



End of Record #2289