![]() |
|
|
|
#1 |
|
Hi,
I'm using the XC95108 CPLD and Xilinx ISE 7.1i. The problem I am having is that outputs are inverted and only at 3 volts. This is my vhdl file: ---------------------------------------------------------------------------- ---- library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.STD_LOGIC_ARITH.ALL; use IEEE.STD_LOGIC_UNSIGNED.ALL; ---- Uncomment the following library declaration if instantiating ---- any Xilinx primitives in this code. --library UNISIM; --use UNISIM.VComponents.all; entity test is Port ( In1 : in std_logic; In2 : in std_logic; Out1 : out std_logic; Out2 : out std_logic); end test; architecture Behavioral of test is begin Out1 <= In1; Out2 <= In2; Out3 <= In3; end Behavioral; This is my ucf file: #PACE: Start of Constraints generated by PACE #PACE: Start of PACE I/O Pin Assignments NET "In1" LOC = "P24" ; NET "In2" LOC = "P25" ; NET "Out1" LOC = "P54" ; NET "Out2" LOC = "P55" ; #PACE: Start of PACE Area Constraints #PACE: Start of PACE Prohibit Constraints #PACE: End of Constraints generated by PACE Now i find if i put an active low pulse on pins 24 or 25, then I will get the inverse of the pulse on pins 54 or 55, and only at 3 volts. What could be wrong!?!?! -- Regards, Ross Marchant Ross Marchant |
|
|
|
|
#2 |
|
Posts: n/a
|
p.s.
the Out3 <= In3; in the vhdl file isn't actually there... Ross Marchant |
|
![]() |
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Dial Up Problem | smackedass | A+ Certification | 3 | 02-02-2007 11:59 PM |
| Re: Virus Problem ** Help!** | David BlandIII | A+ Certification | 1 | 03-02-2004 06:00 PM |
| Pioneer DVR3100S problem with Satellite receiver Samsung DCR 9500 | Fredrik Bengtsson | DVD Video | 0 | 12-12-2003 02:32 PM |
| Re: Serious Computer Problem | hootnholler | A+ Certification | 1 | 11-24-2003 12:18 PM |
| Re: Serious Computer Problem | Bret | A+ Certification | 0 | 11-19-2003 12:51 AM |