May 24, 2005 #1 A abhineet22 Advanced Member level 4 Joined Jan 25, 2005 Messages 105 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Location bangalore Activity points 1,017 mux + select x Consider a 2:1 mux , what will be the output F if the Select (sel) is "X" ?
May 24, 2005 #2 M madhan_gopalan Junior Member level 2 Joined Dec 14, 2002 Messages 20 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Chennai Activity points 20 mux select x Hi, I donot think when you go put the code in FPGA there will be a state called "X". This will be considered either as '0' or '1' in FPGA and the corresponding action will be taken. But we cannot say whether FPGA will understand it as '0' or '1'. Please correct me if I am wrong... Bye, S.Madhanagopalan
mux select x Hi, I donot think when you go put the code in FPGA there will be a state called "X". This will be considered either as '0' or '1' in FPGA and the corresponding action will be taken. But we cannot say whether FPGA will understand it as '0' or '1'. Please correct me if I am wrong... Bye, S.Madhanagopalan
May 24, 2005 #3 N nand_gates Advanced Member level 3 Joined Jul 19, 2004 Messages 899 Helped 175 Reputation 350 Reaction score 53 Trophy points 1,308 Activity points 7,037 o/p of mux when select is x F will be 'x' if any or both inputs are '1' will be '0' if both the inputs are '0';
o/p of mux when select is x F will be 'x' if any or both inputs are '1' will be '0' if both the inputs are '0';
May 24, 2005 #4 J jas_bakshi Junior Member level 2 Joined May 13, 2005 Messages 21 Helped 2 Reputation 4 Reaction score 1 Trophy points 1,283 Activity points 1,491 mux +select (sel) is x Hi Try using casex construct,as it can resolve the contention(x) input to ur system. Regards
mux +select (sel) is x Hi Try using casex construct,as it can resolve the contention(x) input to ur system. Regards
May 24, 2005 #5 S spauls Advanced Member level 2 Joined Dec 17, 2002 Messages 524 Helped 26 Reputation 52 Reaction score 9 Trophy points 1,298 Activity points 3,355 2 to 1 mux with unknown you can also use //synopsys full case dir.
May 24, 2005 #6 Z zysmith Member level 1 Joined Apr 30, 2004 Messages 33 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 261 2:1 mux sel is x maybe it varied from simulation tool to simulation tool. optimistic or pessimistic
May 25, 2005 #7 S shashi_reddy21 Junior Member level 3 Joined Feb 9, 2005 Messages 26 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 213 2:1 mux, select is x hi if select is x ,then the output should be x only
May 25, 2005 #8 J JesseKing Advanced Member level 4 Joined Nov 12, 2004 Messages 100 Helped 3 Reputation 6 Reaction score 1 Trophy points 1,298 Activity points 838 what will be output if mux sel is x If you mean the simulation behavior, I think the result might have a strong relation with your rtl code. such as assign f=(sel == 1) a:b; assign f=(sel == 0) b:a; these two code will give two different result when 'sel' is x.
what will be output if mux sel is x If you mean the simulation behavior, I think the result might have a strong relation with your rtl code. such as assign f=(sel == 1) a:b; assign f=(sel == 0) b:a; these two code will give two different result when 'sel' is x.
May 26, 2005 #9 H haosg Advanced Member level 4 Joined Nov 25, 2004 Messages 103 Helped 2 Reputation 4 Reaction score 2 Trophy points 1,298 Activity points 968 sel.is in simulaiton, the output should be x. of courst , there are no x state in real circuits.
Jun 3, 2005 #10 E eeeraghu Full Member level 4 Joined Jun 3, 2005 Messages 221 Helped 26 Reputation 50 Reaction score 9 Trophy points 1,298 Activity points 3,384 independent 2:1 mux If both the inputs are 0's then the output is 0 If both the inputs are 1's then the output is 1 if both inputs are different then the output is X, May be it depends on the simulation tool we use, dobt about this please clarify?
independent 2:1 mux If both the inputs are 0's then the output is 0 If both the inputs are 1's then the output is 1 if both inputs are different then the output is X, May be it depends on the simulation tool we use, dobt about this please clarify?
Jun 4, 2005 #11 M manik_vivek_82 Newbie level 6 Joined May 26, 2005 Messages 13 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,390 Re: Consider a 2:1 mux , what will output if sel is"x&a if sel=x,output is also x ..
Jun 6, 2005 #12 N nand_gates Advanced Member level 3 Joined Jul 19, 2004 Messages 899 Helped 175 Reputation 350 Reaction score 53 Trophy points 1,308 Activity points 7,037 Re: Consider a 2:1 mux , what will output if sel is"x&a eeeraghu said: If both the inputs are 0's then the output is 0 If both the inputs are 1's then the output is 1 if both inputs are different then the output is X, May be it depends on the simulation tool we use, dobt about this please clarify? Click to expand... This is Simulator independent! If any simulator does not reproduce this behavior means that that simulator has a serious bug!
Re: Consider a 2:1 mux , what will output if sel is"x&a eeeraghu said: If both the inputs are 0's then the output is 0 If both the inputs are 1's then the output is 1 if both inputs are different then the output is X, May be it depends on the simulation tool we use, dobt about this please clarify? Click to expand... This is Simulator independent! If any simulator does not reproduce this behavior means that that simulator has a serious bug!
Jun 12, 2005 #13 P power-twq Full Member level 6 Joined Jun 10, 2005 Messages 373 Helped 8 Reputation 16 Reaction score 3 Trophy points 1,298 Activity points 4,550 Re: Consider a 2:1 mux , what will output if sel is"x&q The output will be up to DC's assumption. abhineet22 said: Consider a 2:1 mux , what will be the output F if the Select (sel) is "X" ? Click to expand...
Re: Consider a 2:1 mux , what will output if sel is"x&q The output will be up to DC's assumption. abhineet22 said: Consider a 2:1 mux , what will be the output F if the Select (sel) is "X" ? Click to expand...
Jun 12, 2005 #14 girish_wabale Member level 3 Joined Mar 21, 2005 Messages 66 Helped 7 Reputation 14 Reaction score 2 Trophy points 1,288 Location Pune Activity points 1,861 Re: Consider a 2:1 mux , what will output if sel is"x&a what means by x wheather unknown or high impedance state?? if select is unknown output is also unknown for high impedence stage it depends on type of mux used refer manufacturers datasheet
Re: Consider a 2:1 mux , what will output if sel is"x&a what means by x wheather unknown or high impedance state?? if select is unknown output is also unknown for high impedence stage it depends on type of mux used refer manufacturers datasheet