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在我们使用Virtex 5 Fx100t的设计中,Vbatt错误地连接到VCCO(3.3V)而不是Vccaux(2.5V),这样的错误是否会对FPGA造成损害? (我们不使用比特流加密) 实际上我们在3.3V存储体上观察到高压降,是否与Vbatt引脚有误? 谢谢。 以上来自于谷歌翻译 以下为原文 Hi, In our design with Virtex 5 Fx100t, Vbatt was connected to VCCO(3.3V) instead of Vccaux(2.5V) mistakenly, so does this mistake cause any hARM to FPGA? ( we don't use bitstream encryption ) Actually we are observing high voltage drops on 3.3V banks, is that observation relevant to mistaken on Vbatt pin? Thank you. |
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5个回答
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VBATT电源主要用于AES密钥寄存器,这些寄存器可能因过压而损坏。
这有可能导致晶体管击穿导致短路,但我认为这不太可能。 你能否修改电路板以断开VBATT引脚与3.3V电源的连接? ------您是否尝试在Google中输入问题? 如果没有,你应该在发布之前。太多结果? 尝试添加网站:www.xilinx.com 以上来自于谷歌翻译 以下为原文 The VBATT supply is primarily for the AES key registers, these registers were likely damaged by the over voltage. There is a possibility that this led to a breakdown with the transistors resulting in a short, but I think that this is unlikely. Can you rework the board to disconnect the VBATT pin from the 3.3V supply?------Have you tried typing your question into Google? If not you should before posting. Too many results? Try adding site:www.xilinx.com |
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O,
我相信Vbatt在3.3 V就好了。 最大引脚电压规格适用。 当部件通电时,Vbatt完全断开。 Vbatt仅用于在电源关闭时保持密钥存储器的活动状态。 Austin Lesea主要工程师Xilinx San Jose 以上来自于谷歌翻译 以下为原文 o, I believe Vbatt at 3.3 v is just fine. There is a max pin voltage specification which applies. The Vbatt is disconnected entirely when the part is powered. Vbatt is only used to keep the key memory alive when power is off. Austin Lesea Principal Engineer Xilinx San Jose |
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埃德,
在V5中,Vbatt通常是3.6V锂纽扣电池。 所以,3.3没问题.... Austin Lesea主要工程师Xilinx San Jose 以上来自于谷歌翻译 以下为原文 Ed, In V5 Vbatt is often a 3.6v lithium coin cell. So, 3.3 is no problem.... Austin Lesea Principal Engineer Xilinx San Jose |
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正如奥斯丁指出的那样,我应该在回复之前阅读Virtex-5数据表。
VBATT电源电压为3.3V。 ------您是否尝试在Google中输入问题? 如果没有,你应该在发布之前。太多结果? 尝试添加网站:www.xilinx.com 以上来自于谷歌翻译 以下为原文 I should have read the Virtex-5 data sheet before reply, as Austin has pointed out. The VBATT supply is fine at 3.3V.------Have you tried typing your question into Google? If not you should before posting. Too many results? Try adding site:www.xilinx.com |
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根据V5数据手册,Vbatt的绝对最大额定值为-0.5V至+ 4.05V,推荐工作条件为1.0V至3.6V,因此3.3V是可接受的。
如果您不使用加密,也可以使用Ground。 - Gabor 以上来自于谷歌翻译 以下为原文 According to the V5 data sheet, absolute max rating for Vbatt is -0.5V to +4.05V, and recommended operating condition is 1.0V to 3.6V, so 3.3V is acceptable. If you're not using encryption, Ground is also acceptable. -- Gabor |
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