Spartan-6 DIFF_PHASE_DETECTOR勘误表和源同步数据接收数据速率限制

开始了。
两个xapp1064 / xapp495都告诉我们在DIFF_PHASE_DETECTOR模式下使用iodelay在接收路径上以高达1050Mbps的速度对齐时钟/数据是多么的好（这里是关于Spartan-6的）。
我喜欢这个想法（特别是xapp495中的一个独立的每通道偏移校正，它只是很棒的东西）但同时iodelay生产勘误表（ar38408）明确指出DIFF_PHASE_DETECTOR应该用于低于400Mbps的速度以防止数据损坏。
我的理解是，我们应该将勘误信息视为最终的智慧，这意味着当使用DIFF_PHASE_DETECTOR作为时钟/数据对齐解决方案时，xapp1064 / xapp495等应该被视为限制在rx路径上的400Mbps。
我想确认一下我的理解是否正确，或者我遗漏了什么。
很高兴看到Xilinx工作人员或使用DIFF_PHASE_DETECTOR idelay模式接收速度为800 + Mbps的Spartan-6串行数据接收的直接硬件经验以及一些真实的BER测量（最后一个可能也是
很多要求:)
问候，
弗拉季斯拉夫·
附：
请注意，我明确声明“rx path”和DIFF_PHASE_DETECTOR用作时钟/数据对齐。
据了解，可以使用variable_from_zero模式和手工制作的inc / dec和训练序列（这是我目前正在工作的）实现专有的反序列化时钟/数据对齐。



以下为原文

Here we go. Both xapp1064 / xapp495 tell us how great is it to use iodelay in DIFF_PHASE_DETECTOR mode to align clock/data on receive path at speeds up to 1050Mbps (it's about Spartan-6 here). I like the idea (especially an independent per-lane deskew in xapp495, it's just great stuff) but at the same time iodelay production errata (ar38408) clearly states that DIFF_PHASE_DETECTOR should be used for speeds below 400Mbps to prevent data corruption.

My understanding is that we should treat errata information as an ultimate wisdom which means xapp1064/xapp495 and alike should be treated as 400Mbps limited on rx path when using DIFF_PHASE_DETECTOR as a clock/data alignment solution.

I'd like to confirm if my understanding is correct or am I missing something.

It would be great to see some feedback either from Xilinx staff or from those who had a direct hardware experience with Spartan-6 serial data receiving at speeds 800+Mbps using DIFF_PHASE_DETECTOR idelay mode with some real-world BER measurements (the last one is probably a too much to ask for :)

Regards,
Vladislav

p.s. please note that I explicitly stated "rx path" and DIFF_PHASE_DETECTOR use as a clock/data alignment. It's understood that one can implement a proprietary de-serialization clock/data alignment using variable_from_zero mode and hand-crafted inc/dec and training sequence (which is what I am working at the moment).