请问怎么知道我的设计应该使用哪种标准？

b，
通常，如果您要连接到其他设备，则符合其标准（smae标准连接到相同标准）。
如果你想选择一个标准来使用，你可以选择链接的两端，那么问题是多远和多快？
LVDS适用于长电缆，也适用于最高速度（短距离）。
它的噪音也最小（地面反弹）。
LVCMOS标准适用于中速。
使用最低的驱动级别，以您想要的速度执行。
观察正确的信号完整性实践（受控阻抗，终端）。
存储器设备（HSTL，SSTL）有特定的标准，用于那些应用程序。
Austin Lesea主要工程师Xilinx San Jose



以下为原文

b,
 
In general, if you are connecting to another device, you match its standard (smae standard connects to same standard).

If you want to choose a standard to use, and you get to choose both ends of the link, then the questions are how far, and how fast?  LVDS is good for long cables and is also very good for highest speeds (over shorter distances).  It also has the least noise (ground bounce).
 
The LVCMOS standards are good for medium speeds.  Use the weakest drive level that performs at the speed you desire.  Observe proper signal integrity practices (controlled impedances, terminations).

There are specific standards for memory devices (HSTL, SSTL), use those for those applications.
 
 
Austin Lesea
Principal Engineer
Xilinx San Jose

非常感谢，奥斯汀。
除了IO标准之外，似乎我还需要决定IO类型。
据我所知，7系列FPGA的IO类型包括三种类型：HP，HR和GTX。
GTX似乎特定于MGT，但我没有在UG471中获得任何有关它的信息。
对于HR和HP，我应该根据我想要的标准来决定使用哪种类型？
再次感谢。



以下为原文

Thanks very much, austin. And besides IO standard, it seems I also need to decide IO type. As I know, IO type for 7 series FPGA includes three types: HP, HR, and GTX. GTX seems to be specific for MGT, however I did not get any information about it in UG471.
For HR and HP, should I decide which type I want to use based on which standard I want to us?
Thanks again.

HP和HR是IO银行类型，并将银行的功能称为高性能
或高范围。
在这种情况下，性能意味着速度，范围意味着最大IO电压。
一旦为引脚选择了IO标准，就应该将其分配给可以支持的银行
因为该标准，例如LVCMOS25或LVCMOS33必须在HR银行上进行
所需电压。
-  Gabor
-  Gabor



以下为原文

HP and HR are IO bank types, and refer to the bank's capability as either High Performance
or High Range.  In this case performance means speed, and range means maximum IO voltage.
Once you've picked the IO standard for a pin, you should assign it to a bank that can support
that standard, for example LVCMOS25 or LVCMOS33 must go on a HR bank because of the
required voltage.
 
-- Gabor
-- Gabor

非常感谢，gszakacs。



以下为原文

Thanks very much, gszakacs.