请问我将fpga lx9更改为lx16或lx25后电子板的其余部分还能更改吗？

你说lx9不能替换lx16或lx25而不改变主板吗？
因为它们具有相同的引脚排列，所以我认为它们具有相同的尺寸。
UG385表2-6清楚地表明，您可以使用LX16器件或LX25器件替换FTG256封装中的LX9器件，而无需对电路板进行任何更改。
您需要为新目标设备重新合成/映射/路由源代码。
您的设计时间将会改变。
引脚分配不一定需要改变。
重新定位时，可能需要更改任何内部LOC分配。
- 鲍勃埃尔金德
签名：新手的自述文件在这里：http：//forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369总结：1。
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在原帖中查看解决方案



以下为原文

You say that the lx9 can't be replace by a lx16 or a lx25 without change the board ? Because they have the same pinout, that's why I thought they had the same dimensions.

 
UG385 Table 2-6 makes it clear that you can replace an LX9 device in FTG256 package with either a LX16 device or a LX25 device without making any changes to the circuit board.

 
You will need to re-synthesise/map/route your source code for the new target device.  Timing of your design will change.  Pin assignments will not need to change, in all likelihood.  Any internal LOC assignments may need to change when retargeting.

 
-- Bob Elkind

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是的，所有Spartan-6设备都不兼容脚印。
只有部分脚印兼容。（我自己没有检查）
1）首先尝试优化您的设计并尝试适应现有的电路板和电路板。
设备。
确保优化设计后，所有IO连接都应与现有的板卡硬件匹配。
2）如果它不起作用，那么你需要用下一个更高端的设备重新实现项目，并验证你的设计是否适合新的FPGA。
就像你需要验证不同的设备部件，直到实施成功。
3）实施完成后，检查两个设备的足迹兼容性。
如果两者都兼容足印，则没有问题。
只需确保新设备的所有IO连接都应与现有的板卡硬件匹配
4）如果高端设备不兼容脚印，那么你需要用更高端的FPGA重新旋转电路板。
_______________________________________________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。



以下为原文

 
 
 
Yes all Spartan-6 devices are not foot print compatible.  Only some of them are foot print compatible.(Myself I did not check)
 
 
1) First try to do optimize your design and try to fit in existing board & device. Make sure that after optimizing design also all IO connections should match with existing board hardware. 
 
 
2) If it does not work , then you need to re-implement project with next higher end device and verify whether your design changes fitting in new FPGA or not. Like that you need to verify with different device parts till implementation successful.
 
 
3) After implementation complete  then check for foot print compatibility of both the devices. If both are foot print compatible then no issues. Just make sure that all IO connections of new device should match with existing board hardware
 
4)  If high end device is not foot print compatible then you need to re-spin board with that higher end FPGA.
 
________________________________________________

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.

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谢谢你的快速回复，
“是的，它们都不兼容脚印”
你说lx9不能替换lx16或lx25而不改变主板吗？
因为它们具有相同的引脚排列，所以我认为它们具有相同的尺寸。
非常感谢。



以下为原文

Thanks you for your fast reply, 
 
"Yes they are all not foot print compatible"
 
You say that the lx9 can't be replace by a lx16 or a lx25 without change the board ? Because they have the same pinout, that's why I thought they had the same dimensions. 
 
Thanks a lot.

你说lx9不能替换lx16或lx25而不改变主板吗？
因为它们具有相同的引脚排列，所以我认为它们具有相同的尺寸。
UG385表2-6清楚地表明，您可以使用LX16器件或LX25器件替换FTG256封装中的LX9器件，而无需对电路板进行任何更改。
您需要为新目标设备重新合成/映射/路由源代码。
您的设计时间将会改变。
引脚分配不一定需要改变。
重新定位时，可能需要更改任何内部LOC分配。
- 鲍勃埃尔金德
签名：新手的自述文件在这里：http：//forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369总结：1。
阅读手册或用户指南。
你读过手册了吗？
你能找到手册吗？2。
搜索论坛（并搜索网页）以寻找类似的主题。
不要在多个论坛上发布相同的问题。
不要在别人的主题上发布新主题或问题，开始新的主题！5。
学生：复制代码与学习设计不同.6“它不起作用”不是一个可以回答的问题。
提供有用的详细信息（请与网页，数据表链接）.7。
您的代码中的评论不需要支付额外费用。
我没有支付论坛帖子的费用。
如果我写一篇好文章，那么我一无所获。



以下为原文

You say that the lx9 can't be replace by a lx16 or a lx25 without change the board ? Because they have the same pinout, that's why I thought they had the same dimensions.

 
UG385 Table 2-6 makes it clear that you can replace an LX9 device in FTG256 package with either a LX16 device or a LX25 device without making any changes to the circuit board.

 
You will need to re-synthesise/map/route your source code for the new target device.  Timing of your design will change.  Pin assignments will not need to change, in all likelihood.  Any internal LOC assignments may need to change when retargeting.

 
-- Bob Elkind

SIGNATURE:
README for newbies is here: http://forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369

Summary:
1. Read the manual or user guide.  Have you read the manual? Can you find the manual?
2. Search the forums (and search the web) for similar topics.
3. Do not post the same question on multiple forums.
4. Do not post a new topic or question on someone else's thread, start a new thread!
5. Students: Copying code is not the same as learning to design.
6 "It does not work" is not a question which can be answered. Provide useful details (with webpage, datasheet links, please).
7. You are not charged extra fees for comments in your code.
8. I am not paid for forum posts.  If I write a good post, then I have been good for nothing.

非常感谢，这是肯定的。
再次感谢所有Xilinx的设计师，无论何时我加入论坛，我都会得到一个快速而明确的答案。



以下为原文

Thanks a lot, it was just to be sure.
 
Thanks again to all Xilinx'moderator, any time I come on the forum, I have a fast and clear answer.

此外，请记住，针对LX16和LX25器件的设计可能需要比LX9设计更多的电源电流。
如果您的电路板电源仅适用于LX9设计，则可能需要更改电源以支持更大的设备。
- 鲍勃埃尔金德
签名：新手的自述文件在这里：http：//forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369总结：1。
阅读手册或用户指南。
你读过手册了吗？
你能找到手册吗？2。
搜索论坛（并搜索网页）以寻找类似的主题。
不要在多个论坛上发布相同的问题。
不要在别人的主题上发布新主题或问题，开始新的主题！5。
学生：复制代码与学习设计不同.6“它不起作用”不是一个可以回答的问题。
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您的代码中的评论不需要支付额外费用。
我没有支付论坛帖子的费用。
如果我写一篇好文章，那么我一无所获。



以下为原文

Also, keep in mind that designs targeted for LX16 and LX25 devices can require more power supply current than LX9 designs.  If your circuit board power supplies are just barely adequate for LX9 designs, you may well need to make power supply changes to support the larger devices.
 
-- Bob Elkind
SIGNATURE:
README for newbies is here: http://forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369

Summary:
1. Read the manual or user guide.  Have you read the manual? Can you find the manual?
2. Search the forums (and search the web) for similar topics.
3. Do not post the same question on multiple forums.
4. Do not post a new topic or question on someone else's thread, start a new thread!
5. Students: Copying code is not the same as learning to design.
6 "It does not work" is not a question which can be answered. Provide useful details (with webpage, datasheet links, please).
7. You are not charged extra fees for comments in your code.
8. I am not paid for forum posts.  If I write a good post, then I have been good for nothing.

好的，我将研究我需要的电源电流。
谢谢，
周末愉快 ：）



以下为原文

Ok I'll study the power supply current that I need.
Thanks,
Have a good week end :)

yfourel写道：
谢谢你的快速回复，
“是的，它们都不兼容脚印”
你说lx9不能替换lx16或lx25而不改变主板吗？
因为它们具有相同的引脚排列，所以我认为它们具有相同的尺寸。
非常感谢。
仔细研究相关设备的引脚排列表。
Spartan-6器件“有点”兼容。
16上的一些I / O引脚可能在25上不可用，听起来很荒谬。
----------------------------是的，我这样做是为了谋生。



以下为原文

yfourel wrote:
Thanks you for your fast reply, 
 
"Yes they are all not foot print compatible"
 
You say that the lx9 can't be replace by a lx16 or a lx25 without change the board ? Because they have the same pinout, that's why I thought they had the same dimensions. 
 
Thanks a lot.

CAREFULLY STUDY the pinout tables for the devices in question. Spartan-6 devices are "somewhat" footprint compatible. Some pins which are I/O on the 16 may not be available on the 25, as ridiculous as that sounds.
----------------------------Yes, I do this for a living.

仔细研究相关设备的引脚排列表。
Spartan-6器件“有点”兼容。
16上的一些I / O引脚可能在25上不可用，听起来很荒谬。
一般来说，贝斯曼可能是正确的。
在这种特殊情况下，贝斯曼的​​警告可以被忽略。我之前的反应基于UG385表2-6。
- 鲍勃埃尔金德
签名：新手的自述文件在这里：http：//forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369总结：1。
阅读手册或用户指南。
你读过手册了吗？
你能找到手册吗？2。
搜索论坛（并搜索网页）以寻找类似的主题。
不要在多个论坛上发布相同的问题。
不要在别人的主题上发布新主题或问题，开始新的主题！5。
学生：复制代码与学习设计不同.6“它不起作用”不是一个可以回答的问题。
提供有用的详细信息（请与网页，数据表链接）.7。
您的代码中的评论不需要支付额外费用。
我没有支付论坛帖子的费用。
如果我写一篇好文章，那么我一无所获。



以下为原文

CAREFULLY STUDY the pinout tables for the devices in question. Spartan-6 devices are "somewhat" footprint compatible. Some pins which are I/O on the 16 may not be available on the 25, as ridiculous as that sounds.
 
Generally speaking, bassman may be correct.  In this specific case, bassman's warning can be ignored.
My previous responses stand, based on UG385 Table 2-6.
 
-- Bob Elkind
SIGNATURE:
README for newbies is here: http://forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369

Summary:
1. Read the manual or user guide.  Have you read the manual? Can you find the manual?
2. Search the forums (and search the web) for similar topics.
3. Do not post the same question on multiple forums.
4. Do not post a new topic or question on someone else's thread, start a new thread!
5. Students: Copying code is not the same as learning to design.
6 "It does not work" is not a question which can be answered. Provide useful details (with webpage, datasheet links, please).
7. You are not charged extra fees for comments in your code.
8. I am not paid for forum posts.  If I write a good post, then I have been good for nothing.

bassman59写道：
yfourel写道：
谢谢你的快速回复，
“是的，它们都不兼容脚印”
你说lx9不能替换lx16或lx25而不改变主板吗？
因为它们具有相同的引脚排列，所以我认为它们具有相同的尺寸。
非常感谢。
仔细研究相关设备的引脚排列表。
Spartan-6器件“有点”兼容。
16上的一些I / O引脚可能在25上不可用，听起来很荒谬。
那对于csg324以及引脚输出不受封装限制的其他较大封装来说也是如此。
虽然看起来很奇怪，大型设备的最大可用I / O引脚数量较少，但Xilinx指出其原因与LX和LXT部件之间的芯片共享有关。
25LXT比16LXT具有更多的GTP，因此标准I / O的键合输出位置更少。
如果你使用FPGA编辑器查看25LX（没有收发器），你会看到一个没有任何存在的大块区域。
这是收发器芯片区域，没有用LX部件的织物填充。
-  Gabor



以下为原文

bassman59 wrote:

yfourel wrote:
Thanks you for your fast reply, 
 
"Yes they are all not foot print compatible"
 
You say that the lx9 can't be replace by a lx16 or a lx25 without change the board ? Because they have the same pinout, that's why I thought they had the same dimensions. 
 
Thanks a lot.

CAREFULLY STUDY the pinout tables for the devices in question. Spartan-6 devices are "somewhat" footprint compatible. Some pins which are I/O on the 16 may not be available on the 25, as ridiculous as that sounds.

Well that is true for the csg324 as well as other larger packages where the pinout is not package limited.  While it does seem strange that a larger device would have fewer maximum available I/O pins, Xilinx has pointed out that the reason has to do with die-sharing between the LX and LXT parts.  The 25LXT has more GTP's than the 16LXT and therefore has fewer bond-out locations for standard I/O.  If you look in the 25LX (without transceivers) using FPGA editor you'll see a massive area where nothing exists.  That's the transceiver die area that doesn't get filled in with fabric for the LX parts.
-- Gabor