ERROR:Place:866 - Not enough valid sites to place the following IOBs: IO Standard: Name = LVC (20
在编译使用了DDR3 IP核 在进行map时出现了下面的错误:
ERROR:Place:866 - Not enough valid sites to place the following IOBs:
IO Standard: Name = LVCMOS25, VREF = NR, VCCO = 2.50, TERM = NONE, DIR =
BIDIR, DRIVE_STR = 12
IO
IO_x
一般是使用IP核时会出现这样的错误,在进行MAP过程中,在ISE的控制台会下面打印下面的信息:
| IO | IO | LVCMOS25 | NR | 2.50 | PAD190
| N3 | None Vref
| IO_x | IO | LVCMOS25 | NR | 2.50 | PAD191
| P4 | None
实际上这两个pin并没有用到,一般出现这个错误是工程中IP核某个pin没有约束正确或者遗漏了。
我遇到的问题是在DDR IP核中,顶层两个pin命名为 mcb3_rzq 和 mcb3_zio,但DDR例化代码中并没有连接到这另个pin,而是命名为rzq3和zio3,出现了上面的错误。
.mcb3_rzq ( rzq3 ),
.mcb3_zio ( zio3 ),
把上面的语句改为下面的语句就行了:
.mcb3_rzq (mcb3_rzq),
.mcb3_zio (mcb3_zio),
或者把顶层管脚 mcb3_rzq 和 mcb3_zio 改为rzq3和zio3 ,并重新修改ucf文件。
- gpstart error: Do not have enough valid segments to start the array.
- gpexpand error:Do not have enough valid segments to start the array.
- sn.exe error "Failed to generate a strong name key pair -- The keyset is not defined" Thread Tools Rate Thread
- Error occurred in deployment step ‘Activate Features’: Operation is not valid due to the current state of the object
- (NOT CLEAR)Question 21: Which of the following statements provide a valid reason not to use RTTI for distributed (i.e. networked
- Error:Unable to start the daemon process: could not reserve enough space for object hea
- Which of the following expression(s) will NOT cause an error when used to replace the ***** in the C
- Error:The run destination iPhone X is not valid for Running the scheme 'ProjectName'. - iOS
- Error:Unable to start the daemon process: could not reserve enough space for object heap.
- error target id is not valid use android list targets to get the target ids
- FSNamesystem: Not able to place enough replicas, still in need of 1
- CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
- Android Studio: Failed to sync Gradle project 'xxx' Error:Unable to start the daemon process: could not reserve enough space for object heap.
- Error: Target id 'android--1' is not valid. Use 'android.bat list targets' to get the target ids.
- Sharepoint Error : The URL "filename" is invalid. It may refer to a nonexistent file or folder, or refer to a valid file or folder that is not in the current Web
- [转]error - Operation is not valid due to the current state of the object.
- 解决asp.net error: Operation is not valid due to the current state of the object
- 关于 error: Operation is not valid due to the current state of the object。
- "Cant start Git: git.exe probably the path to Git executable is not valid" Fix it." error
- fix errors 1088: “Failed to execute request because the App-Domain could not be created. Error: 0x80070005 Access is denied” and 1334: “Exception: System.IO.FileLoadException”