[问答]

求解答斯巴达6多电压问题！

问答对人有帮助，内容完整，我也想知道答案 0 大家好，我有一个斯巴达6 LX150T的问题。我有一个斯巴达6 150T（未使用MGT）设计，VCCAUX是2.5伏特，大多数I / O是3.3伏特，一个银行使用1.8伏特。由于启用线路设置为1.8伏特，因此该电源在接通电源后几百微秒到达。该存储区与Gumstix处理器连接，后者控制1.8V稳压器的使能。 Gumstix总线在该银行与以太网控制器共享。在FGPA配置之后，Gumstix上电精细，以太网正常，1.8伏组上的共享总线上的数据被破坏，导致以太网中的数据包丢失。即使将该bank上的所有FPGA引脚设置为输入也会破坏数据。我也尝试删除所有引脚连接，并使用上拉，拉下和浮动bitgen，但仍然损坏。 Hswapen与gnd绑定，但在配置之后再次没有问题。我通过禁用1.8volts到银行而不是以太网来验证这一点，然后配置FPGA。 FPGA上的所有其他器件（其他存储体）工作正常，没有数据损坏。因此，仅仅启动存储区并进行配置会导致数据损坏到连接的总线。顺便说一句，在重新配置期间，总线完整性恢复正常，直到配置完成，然后再次开始损坏。我检查过并仔细检查过，银行似乎没有连接针脚。有什么想法吗？作者chrisk 以上来自于谷歌翻译以下为原文 Hello all, I am have a problem with a spartan 6 LX150T. I have a spartan 6 150T (MGTs are unused) design, VCCAUX is 2.5 volts, most I/O is 3.3Volts, one bank uses 1.8 volts. The power for this bank arrives a few hundred microseconds after power on due to an enable line setting up the 1.8 volts. This bank interfaces to a Gumstix processor which controls the enable to a 1.8 volt regulator. Gumstix bus is shared on this bank with an ethernet controller. The Gumstix powers up fine, ethernet fine, after FGPA configuration, data is corrupted on the shared bus on the 1.8 volt bank resulting in packet loss in the ethernet. Even setting all FPGA pins on this bank to inputs corrupts the data. I also tried removing all pin connections and used pull up, pull down, and float in bitgen, but still corruption. Hswapen is tied to gnd, but again there are no issues during configuration only after. I verified this by disabling the 1.8volts to the bank but not to the ethernet, then configuring the FPGA. All other devices on the FPGA (other banks) work fine and no data corruption. So merely powering up the bank and configuring causes data corruption to the attached bus. BTW, during a reconfiguration the bus integrity returns to normal until configuration is complete, then the corruption starts again. I have checked and double checked and there appears to be no pins connected in the bank. Any thoughts? Chrisk 0
2019-7-15 13:01:20　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × asd008 该类别下有 32 个回答。邀请回答 aaaa321 该类别下有 27 个回答。邀请回答 doublelove 该类别下有 26 个回答。邀请回答 vynywrwr 该类别下有 21 个回答。邀请回答 hgjhgd 该类别下有 19 个回答。邀请回答 bwerwer 该类别下有 18 个回答。邀请回答 hanyan533 该类别下有 18 个回答。邀请回答 Jaionm 该类别下有 18 个回答。邀请回答 handsomelchcpp 该类别下有 17 个回答。邀请回答 wang2222222 该类别下有 17 个回答。邀请回答 ningee 该类别下有 16 个回答。邀请回答 binro 该类别下有 16 个回答。邀请回答 wznnzw 该类别下有 15 个回答。邀请回答 myf888 该类别下有 15 个回答。邀请回答 yhxc 该类别下有 14 个回答。邀请回答 armortech 该类别下有 14 个回答。邀请回答 60user25 该类别下有 14 个回答。邀请回答 zcy615 该类别下有 14 个回答。邀请回答 wanglinhua2627 该类别下有 14 个回答。邀请回答 guotong1984 该类别下有 14 个回答。邀请回答举报周莹相关推荐 • buck变换器输出电压问题 3917 • sp605嵌入式套件斯巴达6 ic损坏 1080 • 电路求解答 2043 • 为什么斯巴达6有4个led而3e含有8个led？ 1107 • 斯巴达6能通过USB FX3向C应用程序发送数据却无法接收 1062 • 如何使用ISE 14.7并且使用斯巴达6生成了IBERT核心？ 2370 • 菜鸡求解答 2495 • 安装问题求解答 2673 • 如何使用斯巴达6 csg324 -xcs45t银行？ 1423 • 求解答低通滤波器的仿真问题 5184 2个回答

答案对人有帮助，有参考价值 0 我认为由于配置电流尖峰，MGT回复正在发挥作用。在配置时，由于切换转换器的tomillians同时开启了更多的电流尖峰。在电源设计中，使用必须照顾所有这些。 _______________________________________________如果有助于解决您的查询，请将此帖子标记为“接受为解决方案”。因此，它将有助于其他论坛用户直接参考答案。如果您认为该信息有用且面向答复，请给予此帖子称赞。以上来自于谷歌翻译以下为原文 I think the MGT replies are effecting due to configuration current spikes. At the time of configuration there are more current spikes due to millians of switching transisters ON simultaniously. In power supply desiggn use has to take care of all of them. ________________________________________________ Please mark this post as an "Accept as solution" in case if it helped to resolve your query. So that it will help to other forum users to directly refer to the answer. Give kudos to this post in case if you think the information is useful and reply oriented.

2019-7-15 13:08:27 评论举报张颖

答案对人有帮助，有参考价值 0 感谢Kodali的回复。我确实已经终止了所有的MGT。我确实解决了问题，这里的关键是配置与发布期间引脚的状态。在配置期间，我让HSWAPEN拉低了下拉 - 一切都运转的时间。但是当发生总线错误时，没有在后配置中拉下来。在UCF中简单添加PULLDOWN之后，一切都很好！谢谢作者chrisk 以上来自于谷歌翻译以下为原文 Thanks for the reply Kodali. I did have all the MGTs terminated. I did fix the problem, the key here was the state of the pins during configuration versus post. I had HSWAPEN pullled low for pulldowns during config - the time everything worked. But not pulled down in post config when bus erros occurred. After the simple addition of PULLDOWN in the UCF, all is well again !! Thanks Chrisk

2019-7-15 13:16:32 评论举报李建设