05-25-2020 10:50 PM
I'm mow learning and developing zynq XC7Z007-400CLG board.
at the synthesis or Imprementation, I wrote XDC file and set to LVCMOS33 for bank34.
The synthesis and Implementation was success but still red words at IO Std.
What means this red words?
I watched this forums and I know the astarisks means not default state on the pin. I set LCVMOS33 to bank34 and this is not default. So that astarisks don't mean any error, but red words appeared even if set default LCVMOS18 to all bank34's pin.
05-25-2020 11:09 PM
Hi @drb_28 ,
The red word can appear in case of default IOSTANDARD also, In the I/O Ports window, the word default is displayed in red to indicate that these values must be applied manually.
Please check page no.38 of below link:
05-26-2020 12:03 AM
Thank you so much!
I got it about red word's mean.
However, Let me ask you one more question.
I set these pin's IO Standard by XDC file manually.
Is it correct that the default I/O Standard is always written by red even if the pin is set manually
05-26-2020 01:30 AM
05-27-2020 06:32 AM
I agree with @drb_28 that something seems to be wrong with the "red words" in the "IO Port" window of Vivado v2019.2.
As you say, when we forget to specify IOSTANDARD then we get the "red word" default as shown below.
However, sometimes all the words in the I/O Std column are red as shown below. This behavior appears to be a bug. I hope you can submit a CR to fix this.
05-27-2020 06:46 AM
YES!! That is exactly what I want to know!
I appriciate your supprimentary explanation!
I just started developing with vivado from ver. 2019.2. So I don't know this "red words" condition.
However, I think something seems to be wrong with our pictures situations and your/other document's situations.
05-27-2020 07:02 AM
05-27-2020 07:18 AM