AR# 11266: 4.1i CORE Generator Multiplier - The "SCLR Overrides CE" option does not function correctly
AR# 11266
4.1i CORE Generator Multiplier - The "SCLR Overrides CE" option does not function correctly
描述
Keywords: Virtex-II, Multiplier, override, SCLR, CE
Urgency: Standard
General Description: I am creating a multiplier for the Virtex-II in CORE Generator. If I set the "SCLR Overrides CE" option, this information does not get passed on. Regardless of what selection is made, the following appears in the XCO file:
CSET ce_overrides = CE_Overrides_SCLR
解决方案
A work-around is to add the logic externally to the multiplier core; this will force the CE signal High whenever a synchronous reset is applied:
CE_core = CE_in or SCLR;
However, this process does add some delay on the CE line.