由JTAG编程Spartan 6失败

我不能在我的自定义板上编程Spartan 6。
获取设备ID已成功完成，但编程在以下三种方式之一几乎完成时失败：
1.状态寄存器中的所有位均为0。
2.状态寄存器中的所有位均为1。
3.状态寄存器中的位是正确的，但DONE保持低电平。
在另一个不同的主板上，但是使用相同的Spartan 6，它成功地进行了编程。
INIT和PROGRAM位在范围内似乎没问题。
我试图移除DONE引脚的LED  - 没有帮助。
该板的工作副本表明板上的装配错误或故障是失败的。
不一致的故障结果表明连接不良，可能是开路或短路。
建议：
寻找故障板和工作板之间的装配差异
使用示波器探头检测“看起来不正确”的信号。
您可以使用电路板的工作副本作为比较参考。
JTAG信号应该特别重要。
不要继续更改故障板。
恢复此板与工作板相同。
通过更改电路板，您可能会引入新的错误，这些错误会掩盖您正在寻找的故障情况。
如果轻轻弯曲电路板（尤其是FPGA的区域）会改变结果，则应对电路板进行X射线检查以确定焊球连接不良。
发布故障板的iMPACT日志。
除了FPGA之外，在同一JTAG链中是否还有其他器件？
如果是这样，您应该发布涵盖这些设备的原理图部分。
- 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

I cannot  program Spartan 6 on my custom board.
The Get Device ID is done successfully, but the programming fails when it almost completed in one of 3 ways:
1. All bits in the status registers are 0.
2. All bits in the status registers are 1.
3. Bits in the status register are correct, but DONE stays low.
On the other different board but with the same Spartan 6 it programs successfully.
The INIT and PROGRAM bits seem OK in the scope.
I tried to remove the LED of DONE pin - didn't help.
 
The working copies of this board suggest an assembly error or fault on the board which is failing.
The inconsistent failure results suggest a poor connection, with possibly an open circuit or a short circuit.
 
Suggestions:
 

• Look for assembly differences between the failing board and a working board
  

• Use a scope probe to detect signals which do not 'look right'.  You can use a working copy of the board as a comparison reference.  The JTAG signals should be of particular interest.
  

• Do not continue making changes to the failing board.  Restore this board to be identical to the working boards.  By making changes to the board, you risk introducing new errors which obscure the fault condition you are seeking.
  

• If gently flexing the board (especially the area of the FPGA) changes the results, you should x-ray the board for poor solder ball connections.
  

• Post the iMPACT log for the failing board.
  

• Are there any other devices, in addition to the FPGA, in the same JTAG chain?  If so, you should post the schematic sections which cover these 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.

你好，
谢谢你的帮助。
工作板与非工作板不同。
它们不同，但具有相同的FPGA（Spartan 6），因此我可以尝试使用相同的比特流。
板上没有其他JTAG器件。
请参阅IMPACT日志：
iMPACT版本：Jan 7 2012 03：23：53iMPACT日志文件开始于2012年2月20日星期二10:23:34INININ：iMPACT  - 当前时间：20/03/2012 10：23：37 // ***批量CMD：程序 -
p 1此设备链的最大TCK工作频率：25000000.Validating chain ...边界扫描链验证成功。'1'：编程设备... PROGRESS_START  - 启动Operation.LCK_cycle = NoWait.LCK周期：NoWaitdone.'1
'：读取状态寄存器内容...... [0]
CRC错误：0 [1] IDCODE错误：0 [2] DCM锁定状态：0 [3] GTS_CFG_B状态：0 [4] GWE状态：0 [5] GHIGH状态：0 [6]解密错误：0 [7]
DECRYPTOR ENABLE：0 [8] HSWAPEN PIN：0 [9] MODE PIN M [0]：0 [10] MODE PIN M [1]：0 [11]保留：0 [12] INIT_B PIN：0 [13] DONE
PIN：1 [14] SUSPEND STATUS：0 [15] FALLBACK STATUS：0INFO：iMPACT：2219  - 状态寄存器值：INFO：iMPACT  -  0000 0000 0000 0100 INFO：iMPACT：579  - '1'：完成将位文件下载到设备
.INFO：iMPACT：188  - '1'：编程成功完成.LCK_cycle = NoWait.LCK周期：NoWaitINFO：iMPACT  - '1'：检查完成的引脚.... done.'1'：编程终止。
DONE没有变高.PROGRESS_END  - 结束操作。经过的时间= 12秒。



以下为原文

Hello,
Thank you for help.
The working board is not identical to non-working. They are different, but have the same FPGA (Spartan 6), so I can experiment with the same bitstream.
There are no other JTAG devices on the board.
Please, see the IMPACT log:
 
 
iMPACT Version: Jan  7 2012 03:23:53

iMPACT log file Started on Tue Mar 20 10:23:34 2012

INFO:iMPACT - Current time: 20/03/2012 10:23:37
// *** BATCH CMD : Program -p 1
Maximum TCK operating frequency for this device chain: 25000000.
Validating chain...
Boundary-scan chain validated successfully.
'1': Programming device...
PROGRESS_START - Starting Operation.
 LCK_cycle = NoWait.
LCK cycle: NoWait
done.
'1': Reading status register contents...
[0] CRC ERROR                                                              :        0
[1] IDCODE ERROR                                                           :        0
[2] DCM LOCK STATUS                                                        :        0
[3] GTS_CFG_B STATUS                                                       :        0
[4] GWE STATUS                                                             :        0
[5] GHIGH STATUS                                                           :        0
[6] DECRYPTION ERROR                                                       :        0
[7] DECRYPTOR ENABLE                                                       :        0
[8] HSWAPEN PIN                                                            :        0
[9] MODE PIN M[0]                                                          :        0
[10] MODE PIN M[1]                                                         :        0
[11] RESERVED                                                              :        0
[12] INIT_B PIN                                                            :        0
[13] DONE PIN                                                              :        1
[14] SUSPEND STATUS                                                        :        0
[15] FALLBACK STATUS                                                       :        0
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 0000 0000 0000 0100
INFO:iMPACT:579 - '1': Completed downloading bit file to device.
INFO:iMPACT:188 - '1': Programming completed successfully.
 LCK_cycle = NoWait.
LCK cycle: NoWait
INFO:iMPACT - '1': Checking done pin....done.
'1': Programming terminated. DONE did not go high.
PROGRESS_END - End Operation.
Elapsed time =     12 sec.

你在第一篇文章中提到董事会以不同方式失败。
我假设iMPACT日志不同，有不同的故障。
从每种故障模式中查看iMPACT日志会很有帮助。
感谢您澄清这是一个独特的董事会。
查看包含配置连接和JTAG接口的电路板原理图会很有帮助。
这有助于解释DONE位故障。
- 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 mentioned in your first post that the board fails in different ways.  I assume that the iMPACT logs are different, with different failures.  It would be helpful to see an iMPACT log from each of the failure modes.
 
Thank you for clarifying that this is a unique board.  It would be helpful to see the board schematic which includes the configuration connections and JTAG interface.  This will be helpful for explaining DONE bit failure.
 
-- 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.

1.所有状态位为零时出错：
'1'：编程设备... PROGRESS_START  - 启动Operation.LCK_cycle = NoWait.LCK周期：NoWaitdone.'1'：读取状态寄存器内容... [0]
CRC错误：0 [1] IDCODE错误：0 [2] DCM锁定状态：0 [3] GTS_CFG_B状态：0 [4] GWE状态：0 [5] GHIGH状态：0 [6]解密错误：0 [7]
DECRYPTOR ENABLE：0 [8] HSWAPEN PIN：0 [9] MODE PIN M [0]：0 [10] MODE PIN M [1]：0 [11]保留：0 [12] INIT_B PIN：0 [13] DONE
PIN：0 [14] SUSPEND STATUS：0 [15] FALLBACK STATUS：0INFO：iMPACT：2219  - 状态寄存器值：INFO：iMPACT  -  0000 0000 0000 0000 INFO：iMPACT：579  - '1'：完成将位文件下载到设备
.INFO：iMPACT：188  - '1'：编程成功完成.LCK_cycle = NoWait.LCK周期：NoWaitINFO：iMPACT  - '1'：检查完成的引脚.... done.'1'：编程终止。
DONE没有变高.PROGRESS_END  - 结束操作。经过的时间= 8秒。



以下为原文

1. Error when all status bits are zero:
 
'1': Programming device...
PROGRESS_START - Starting Operation.
 LCK_cycle = NoWait.
LCK cycle: NoWait
done.
'1': Reading status register contents...
[0] CRC ERROR                                                              :        0
[1] IDCODE ERROR                                                           :        0
[2] DCM LOCK STATUS                                                        :        0
[3] GTS_CFG_B STATUS                                                       :        0
[4] GWE STATUS                                                             :        0
[5] GHIGH STATUS                                                           :        0
[6] DECRYPTION ERROR                                                       :        0
[7] DECRYPTOR ENABLE                                                       :        0
[8] HSWAPEN PIN                                                            :        0
[9] MODE PIN M[0]                                                          :        0
[10] MODE PIN M[1]                                                         :        0
[11] RESERVED                                                              :        0
[12] INIT_B PIN                                                            :        0
[13] DONE PIN                                                              :        0
[14] SUSPEND STATUS                                                        :        0
[15] FALLBACK STATUS                                                       :        0
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 0000 0000 0000 0000
INFO:iMPACT:579 - '1': Completed downloading bit file to device.
INFO:iMPACT:188 - '1': Programming completed successfully.
 LCK_cycle = NoWait.
LCK cycle: NoWait
INFO:iMPACT - '1': Checking done pin....done.
'1': Programming terminated. DONE did not go high.
PROGRESS_END - End Operation.
Elapsed time =      8 sec.

2.所有状态位均为“1”时出错：
'1'：编程设备... PROGRESS_START  - 启动Operation.LCK_cycle = NoWait.LCK周期：NoWaitdone.'1'：读取状态寄存器内容... [0]
CRC错误：1 [1] IDCODE错误：1 [2] DCM锁定状态：1 [3] GTS_CFG_B状态：1 [4] GWE状态：1 [5] GHIGH状态：1 [6]解密错误：1 [7]
DECRYPTOR ENABLE：1 [8] HSWAPEN PIN：1 [9] MODE PIN M [0]：1 [10] MODE PIN M [1]：1 [11]保留：1 [12] INIT_B PIN：1 [13] DONE
PIN：1 [14]暂停状态：1 [15] FALLBACK STATUS：1警告：iMPACT：2217  - 状态寄存器中显示错误，CRC错误位不是0.INFO:iMPACT:2219  - 状态寄存器值：INFO：iMPACT  -
1111 1111 1111 1111 INFO：iMPACT：579  - '1'：已完成将位文件下载到device.INFO:iMPACT:188  - '1'：编程成功完成.LCK_cycle = NoWait.LCK周期：NoWaitINFO：iMPACT  - '1'：
检查完成的针......完成。'1'：编程终止。
DONE没有变高.PROGRESS_END  - 结束操作。经过的时间= 7秒。



以下为原文

2. Error when all status bits are '1':
 
'1': Programming device...
PROGRESS_START - Starting Operation.
 LCK_cycle = NoWait.
LCK cycle: NoWait
done.
'1': Reading status register contents...
[0] CRC ERROR                                                              :        1
[1] IDCODE ERROR                                                           :        1
[2] DCM LOCK STATUS                                                        :        1
[3] GTS_CFG_B STATUS                                                       :        1
[4] GWE STATUS                                                             :        1
[5] GHIGH STATUS                                                           :        1
[6] DECRYPTION ERROR                                                       :        1
[7] DECRYPTOR ENABLE                                                       :        1
[8] HSWAPEN PIN                                                            :        1
[9] MODE PIN M[0]                                                          :        1
[10] MODE PIN M[1]                                                         :        1
[11] RESERVED                                                              :        1
[12] INIT_B PIN                                                            :        1
[13] DONE PIN                                                              :        1
[14] SUSPEND STATUS                                                        :        1
[15] FALLBACK STATUS                                                       :        1
WARNING:iMPACT:2217 - Error shows in the status register, CRC Error bit is NOT   0.
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 1111 1111 1111 1111
INFO:iMPACT:579 - '1': Completed downloading bit file to device.
INFO:iMPACT:188 - '1': Programming completed successfully.
 LCK_cycle = NoWait.
LCK cycle: NoWait
INFO:iMPACT - '1': Checking done pin....done.
'1': Programming terminated. DONE did not go high.
PROGRESS_END - End Operation.
Elapsed time =      7 sec.

附带FPGA配置部分.pdf。
FPGA配置部分.pdf 23 KB



以下为原文

FPGA Configuration Section.pdf is attached.
            FPGA Configuration Section.pdf ‏23 KB

配置连接器.pdf已附加。
配置连接器.pdf 12 KB



以下为原文

Configuration connector.pdf is attached.
            Configuration connector.pdf ‏12 KB

你从原理图中删除了一点。
话虽如此，这里有一些建议：
HSWAPEN未显示。
这个引脚是如何连接的？
什么是VCCAUX电压？
挂起引脚应与GND直接连接。
10K下拉是不够的。
什么连接到DONE引脚？
原理图中缺少部分网络。
CCLK信号应该终止到SPI闪存。
一个33欧姆的R系列就足够了。
为什么M1，M0引脚跳线用于从机串行配置，x4 SPI闪存连接用于主串行配置？
你能在电路板上编程SPI闪存吗？
使用iMPACT？
- 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 removed a bit too much from your schematics.  Having said that, here are some suggestions:
 

• HSWAPEN is not shown.  How is this pin connected?
  
• What is VCCAUX voltage?
  
• Suspend pin should have a direct connection to GND.  A 10K pulldown is not sufficient.
  
• What is connected to the DONE pin?  Part of this net is missing from the schematic.
  
• There should be a termination on the CCLK signal to the SPI flash memory.  A 33-ohm series R would suffice.
  
• Why are M1, M0 pins jumpered for slave serial configuration, with a x4 SPI flash memory connected for master serial config?
  

Are you able to program the SPI flash memory on the board?  Using iMPACT?
 
-- 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.

1.您可以在PDF附件中看到HSWAPEN。
2.VCCAUX为3.3 V.
3.我已将Suspend引脚连接到GND，但它没有帮助。
4.通常，DONE引脚上拉4.7K至3.3V，在连接器J700上，我们在引脚18和11之间连接330欧姆。从原理图中可以看出，100欧姆在DONE引脚上串联连接，并且
330 ||
4,7K至3.3V。
5.端接电阻丢失是一个设计错误（已知问题）
6. M1，M0引脚跳线为从机串口配置也是错误的，是否会影响JTAG编程失败？
7.我们没有尝试在板上编程SPI闪存。
Bank0,2_CPU_Asy_Serial_Flash_M3.pdf 67 KB



以下为原文

1. HSWAPEN you can see at the pdf attached.
2.VCCAUX is 3.3 V
3.I've attached Suspend pin to GND, it didn't help.
4.Generally, the DONE pin was pulled up with 4.7K to 3.3V and on connector J700 we connected 330 Ohm between pins 18 and 11.  As you can see from schematics, the 100 Ohm is connected in series on the DONE pin, and 330 || 4,7K to 3.3V.
5. The missing of the termination resistor is a design error (known issue)
6. M1, M0 pins jumpered for slave serial configuration is also mistake, can it influence JTAG programming failure?
7. We didn't try yet to program the SPI flash memory on the board.
            Bank0,2_CPU_Asy_Serial_Flash_M3.pdf ‏67 KB

1.您可以在PDF附件中看到HSWAPEN。
好
2.VCCAUX为3.3 V.
好
3.我已将Suspend引脚连接到GND，但它没有帮助。
保持挂起引脚GND
4.通常，DONE引脚上拉4.7K至3.3V，在连接器J700上，我们在引脚18和11之间连接330欧姆。从原理图中可以看出，100欧姆在DONE引脚上串联连接，并且
330 ||
4,7K至3.3V。
好
5.端接电阻丢失是一个设计错误（已知问题）
6. M1，M0引脚跳线为从机串口配置也是错误的，是否会影响JTAG编程失败？
不，它不会干涉。
7.我们没有尝试在板上编程SPI闪存。
你用示波器检查了JTAG信号吗？
在J700附近的100欧姆电阻的两侧？
你检查过电源吗？
你有这个相同的董事会的其他副本吗？
他们的行为是一样的吗？
- 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

1. HSWAPEN you can see at the pdf attached.
good
2.VCCAUX is 3.3 V
good
3.I've attached Suspend pin to GND, it didn't help.
keep suspend pin GNDed
4.Generally, the DONE pin was pulled up with 4.7K to 3.3V and on connector J700 we connected 330 Ohm between pins 18 and 11.  As you can see from schematics, the 100 Ohm is connected in series on the DONE pin, and 330 || 4,7K to 3.3V.
OK
5. The missing of the termination resistor is a design error (known issue)
6. M1, M0 pins jumpered for slave serial configuration is also mistake, can it influence JTAG programming failure?
No, it won't interfere.
7. We didn't try yet to program the SPI flash memory on the board.
 

• Have you checked the JTAG signals with an oscilloscope?  On both sides of the 100-ohm resistors near J700?
  
• Have you checked power supplies?
  
• Do you have other copies of this identical board?  Do they act the same?
  

 
-- 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.

1.您可以在PDF附件中看到HSWAPEN。
好
2.VCCAUX为3.3 V.
好
3.我已将Suspend引脚连接到GND，但它没有帮助。
保持挂起引脚GND
4.通常，DONE引脚上拉4.7K至3.3V，在连接器J700上，我们在引脚18和11之间连接330欧姆。从原理图中可以看出，100欧姆在DONE引脚上串联连接，并且
330 ||
4,7K至3.3V。
好
5.端接电阻丢失是一个设计错误（已知问题）
6. M1，M0引脚跳线为从机串口配置也是错误的，是否会影响JTAG编程失败？
不，它不会干涉。
7.我们没有尝试在板上编程SPI闪存。
你用示波器检查了JTAG信号吗？
在J700附近的100欧姆电阻的两侧？
你检查过电源吗？
你有这个相同的董事会的其他副本吗？
他们的行为是一样的吗？
- 鲍勃埃尔金德



以下为原文

1. HSWAPEN you can see at the pdf attached.
good
2.VCCAUX is 3.3 V
good
3.I've attached Suspend pin to GND, it didn't help.
keep suspend pin GNDed
4.Generally, the DONE pin was pulled up with 4.7K to 3.3V and on connector J700 we connected 330 Ohm between pins 18 and 11.  As you can see from schematics, the 100 Ohm is connected in series on the DONE pin, and 330 || 4,7K to 3.3V.
OK
5. The missing of the termination resistor is a design error (known issue)
6. M1, M0 pins jumpered for slave serial configuration is also mistake, can it influence JTAG programming failure?
No, it won't interfere.
7. We didn't try yet to program the SPI flash memory on the board.
 

• Have you checked the JTAG signals with an oscilloscope?  On both sides of the 100-ohm resistors near J700?
  
• Have you checked power supplies?
  
• Do you have other copies of this identical board?  Do they act the same?
  

 
-- Bob Elkind

同时检查连接到PROG_B的U103引脚3。
- 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

Also check U103 pin 3, connected to PROG_B.
 
-- 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.