Xilinx slew rate settings
Posted: 21 Dec 2021 09:52
All,
I'm tired, i'm cranky, i've just put 200 hours of development time in on the TF1260 firmware. When i see people pointing out that i'm an idiot for not setting the slew rates on the the TF cards and that this is the explanation for why their card does work it really makes me want to scream.
First of all the slew rate settings are global on the XC9500XL series. If you set them to fast its fast on every pin and this can cause mega issues on the CPU clock line on everything except the TF1260.
Second.. NONE of the tf cards have slew set to fast and there are 5000+ of them out there. They get tested to death before release and if it needed fast slew rate i'd have done the math and set it.
Third if changing the slew rates fixes an issue for you its indicative of crappy soldering. Something is capacitive.
I will just delete threads where people do stupid stuff like this out and its pushing me away from letting you have any of my code anymore. I get enough armchair idiots without this.
I'm tired, i'm cranky, i've just put 200 hours of development time in on the TF1260 firmware. When i see people pointing out that i'm an idiot for not setting the slew rates on the the TF cards and that this is the explanation for why their card does work it really makes me want to scream.
First of all the slew rate settings are global on the XC9500XL series. If you set them to fast its fast on every pin and this can cause mega issues on the CPU clock line on everything except the TF1260.
Second.. NONE of the tf cards have slew set to fast and there are 5000+ of them out there. They get tested to death before release and if it needed fast slew rate i'd have done the math and set it.
Third if changing the slew rates fixes an issue for you its indicative of crappy soldering. Something is capacitive.
I will just delete threads where people do stupid stuff like this out and its pushing me away from letting you have any of my code anymore. I get enough armchair idiots without this.