你不能......
Spartan-3A Libaries Guide（spartan3a_hdl.pdf）中描述了DCP_SP接口。
CLKFX_DIVIDE是1到32之间的整数值.VLDL和Verilog都有一个示例实例化模板。
请注意，当前Spartan系列（-3,3E，-3A / AN，A DSP）上的DCM是静态配置的。
在合成设计时选择配置，并且此配置由编程配置（例如.bit文件）指定。
您无法在用户逻辑中动态更改此值。
这就是为什么这些值被描述为属性而不是块上的信号。
Virtex-4和Virtex-5上的DCM具有DRP（动态重配置端口），其中一些参数可以从用户逻辑更改。
BT
消息由timpe在01-11-2009 04:14 PM编辑
以上来自于谷歌翻译
以下为原文
You can't...
The DCP_SP interface is described in the Spartan-3A Libaries Guide (spartan3a_hdl.pdf).
The CLKFX_DIVIDE is an integer value between 1 and 32. There is an example instantiation template for both VHDL and Verilog.
Note that the DCMs on the current Spartan families (-3, 3E, -3A/AN, A DSP) are statically configured. The configuration is selected when you synthesize the design and this configuration is specified by the programming configuration (e.g. .bit file). You cannot change this value on-the fly from user logic. That is why these values are described as attributes and not signals on the block.
The DCMs on Virtex-4 and Virtex-5 have a DRP (dynamic reconfiguration port) where some of the parameters can be changed from the user logic.
bt
Message Edited by timpe on 01-11-2009 04:14 PM
你不能......
Spartan-3A Libaries Guide（spartan3a_hdl.pdf）中描述了DCP_SP接口。
CLKFX_DIVIDE是1到32之间的整数值.VLDL和Verilog都有一个示例实例化模板。
请注意，当前Spartan系列（-3,3E，-3A / AN，A DSP）上的DCM是静态配置的。
在合成设计时选择配置，并且此配置由编程配置（例如.bit文件）指定。
您无法在用户逻辑中动态更改此值。
这就是为什么这些值被描述为属性而不是块上的信号。
Virtex-4和Virtex-5上的DCM具有DRP（动态重配置端口），其中一些参数可以从用户逻辑更改。
BT
消息由timpe在01-11-2009 04:14 PM编辑
以上来自于谷歌翻译
以下为原文
You can't...
The DCP_SP interface is described in the Spartan-3A Libaries Guide (spartan3a_hdl.pdf).
The CLKFX_DIVIDE is an integer value between 1 and 32. There is an example instantiation template for both VHDL and Verilog.
Note that the DCMs on the current Spartan families (-3, 3E, -3A/AN, A DSP) are statically configured. The configuration is selected when you synthesize the design and this configuration is specified by the programming configuration (e.g. .bit file). You cannot change this value on-the fly from user logic. That is why these values are described as attributes and not signals on the block.
The DCMs on Virtex-4 and Virtex-5 have a DRP (dynamic reconfiguration port) where some of the parameters can be changed from the user logic.
bt
Message Edited by timpe on 01-11-2009 04:14 PM
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