Answers Database

M1.4 Bitgen -- Output using OMUX2 stuck low...


Record #3666

Product Family:  Software

Product Line:  FPGA Implementation

Problem Title:
M1.4 Bitgen -- Output using OMUX2 stuck low...


Problem Description:
The test design implements an OMUX2 and OBUFE identically in two different IOBs
(P15 and P16) of an xc4044xlPQ240.  P15 works P16 is stuck LOW.  I made a sepera
te test design to do the same thing and was able to duplicate the problem in H/W
 with both designs.  I am only assuming that this is a bitstream generation prob
lem.  I made another design that only implements the OMUX2 in P16 and it works.


Solution 1:

This problem has been corrected in a combined bitgen and
speed file upgrade:

ftp://ftp.xilinx.com/pub/swhelp/M1.4_alliance/spd_4kxl3_m14.tar.Z
ftp://ftp.xilinx.com/pub/swhelp/M1.4_alliance/spd_4kxl3_m14.zip

Both files contain the same data.



End of Record #3666