Spartan 3和Spartan 6帧缓冲吞吐量

帧缓冲区需要大约373MB /秒的带宽
1920 * 1080 * 60FPS * 3Bytes /像素
如果你想同时读写，那么加倍到大约750MB /秒。
S6 -2速度等级支持DDR-667。
您需要一个16位宽的DRAM来为全双工帧缓冲提供足够的带宽（加上净空）。
如果读取和写入不重叠，则可以使用1字节宽的DRAM。
你的视频是如何进入芯片的？
-2速度等级S6不具有1920x1080p / 60 TMDS（例如DVI或HDMI）所需的ISERDES比特率。
我没有检查-3速度等级与1080p / 60。
- 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 need roughly 373MB/sec bandwidth to your frame buffer

1920 * 1080 * 60FPS * 3Bytes/pixel

If you want to read and write concurrently, double that to around 750MB/sec.
 
S6 -2 speed grade supports DDR-667.  You'll need a 16bit wide DRAM to provide enough bandwidth (plus headroom) for a full duplex frame buffer.  If read and write are non-overlapping, you could get by with a 1 byte wide DRAM.
 
How is your video coming on-chip?  A -2 speed grade S6 doesn't have the ISERDES bit rate required for 1920x1080p/60 TMDS (e.g. DVI or HDMI).  I haven't checked on -3 speed grade vs. 1080p/60.
 
- 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.

鲍勃，
谢谢。
视频流为24bit，HS，VS，DE＆amp;
CLK。
当你说DDR-667你的意思是DDR2 @ 333MHz？
你在哪里获得了“S6 -2速度等级支持DDR-667”的信息？
-3会更好吗？
你认为如果我将实现2个内存控制器，一个具有16位DDR和其他8（或16）位DDR，我将100％安全，或者它足以使用一个16位400 MHz DDR2或
DDR3？
干杯，
贝纳



以下为原文

Bob,
 
Thank you.
The video is streamed as 24bit, HS, VS, DE & CLK.
When you say DDR-667 you mean DDR2 @ 333MHz?
 
Where did you got the info that the "S6 -2 speed grade supports DDR-667"? does -3 will be even better?
 
Do you think that if I'll implement 2 memory controllers, one with 16 bit DDR and the other 8 (or 16) bits DDR i'll be 100% safe or it'll be enough to use one 16 bit 400 MHz DDR2 or DDR3?
 
Cheers,
Yossi
 

当你说DDR-667你的意思是DDR2 @ 333MHz？
是的，我的意思是编写DDR2-667，它使用带有DDR数据信号的333MHz时钟
你在哪里得到的信息“S6 -2速度等级支持DDR-667？
查看数据表，doc DS162。
在-2速度等级上需要扩展VCCint以支持DDR2-667。
-3会更好吗？
-3速度等级支持高达DDR2-800，具有扩展的VCCint
你认为如果我将实现2个内存控制器，一个具有16位DDR和其他8（或16）位DDR，我将100％安全，或者它足以使用一个16位400 MHz DDR2或
DDR3？
您没有充分描述您的设计要求，以给您一个权威的答案。
你应该自己做计算，这是一个非常简单的决定。
首先要弄清楚你需要多少并发数据带宽。
如果一个内存控制器满足您的需求，您不应该尝试使用两个 - 这将为您的设计增加相当大的复杂性。
- 鲍勃
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

When you say DDR-667 you mean DDR2 @ 333MHz?

Yes, I meant to write DDR2-667, which uses a 333MHz clock with DDR data signaling

Where did you got the info that the "S6 -2 speed grade supports DDR-667?

Check the datasheet, doc DS162.  Requires extended VCCint for DDR2-667 support on -2 speed grade.

does -3 will be even better?

-3 speed grade supports up to DDR2-800, with extended VCCint

Do you think that if I'll implement 2 memory controllers, one with 16  bit DDR and the other 8 (or 16) bits DDR i'll be 100% safe or it'll be  enough to use one 16 bit 400 MHz DDR2 or DDR3?

You haven't described your design requirements sufficiently to give you an authoritative answer.  You should do the calculations yourself, it's a pretty simple decision.  First figure out how much concurrent data bandwidth you need.  If one memory controller meets your needs, you shouldn't attempt to use two -- this will add considerable complexity to your design.

- Bob
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.