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tify;text-indent: 40px;">我正在尝试将固件从旧的Altera设备移植到XC9536中。
原始器件中的一个功能是使用缓冲版本的边沿反转输入时钟边沿,以产生非常窄的时钟脉冲。 VHDL方程应该看起来像(我认为): Pulse 以下为原文 I'm trying to port firmware from an old Altera device into a XC9536. One of the functions in the original device AND'ed the inversion of an input clock edge with a buffered version of the edge, to produce a very narrow clocking pulse. The VHDL equation should look like (i think): Pulse <= buffered_edge AND not(input_edge); I'm assuming that the prop delay of the buffer is larger than that of an inverter...is it possible to do this with an XC9536? We've noticed that porting stuff from Altera EP610 to the Xilinx 95xx family is not as straightforward as one might think (the tricks that work with the old dog don't work with the new dog)... |
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是的,可以使用XC9536来实现这一点,这是数字硬件工程师使用的标准电路,它可以与任何设备配合使用......
不太确定你的vhdl描述,你做了那个或者它是那样的吗? 亲切的问候鲍勃斯特 以上来自于谷歌翻译 以下为原文 Yes it’s possible to do this with an XC9536, that’s a standard circuit used by digital hardware engineers, it should work with any device… Not so sure about your vhdl description though, did you make that up or does it work like that? Kind Regards Bobster |
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“不过对你的vhdl描述不太确定,你有没有做到这一点,还是像那样工作?”
我做了这个。 它编译,但我有一个绝对的悲痛试图做一个拟合后的模拟。 我想我成功地模拟了合成的输出(在拟合之前),但我看不到短脉冲。 请注意,我不知道如何指定脉冲的宽度; 我甚至不知道我是否可以在约束文件中控制它.... 以上来自于谷歌翻译 以下为原文 "Not so sure about your vhdl description though, did you make that up or does it work like that?" I made this up. It compiles, but I'm having absolute grief trying to do a post-fit simulation. I think I successfully simulated the output of the synthesis (prior to fitting), but I could not see the short pulse. Please note, I have no idea how to specify the width of the pulse; I don't even know if I can control this in a constraints file.... |
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