Spartan 6在240MHz部分时序失败该怎么办？

我有一个Spartan 6，主要是60MHz的时钟，但有一个时钟频率为240MHz（以及60MHz）。
那部分与其他一切非常分开。
今天我尝试在我的项目中添加一个新模块。
它是一个SPI从控制器 - 本质上它需要一个SPI命令，并写入或读取几个寄存器。
很简单。
它的实例化只有6个端口 - 4条SPI线（MISO，MOSI，SCK和nCS），复位和时钟（60MHz）。
SPI线直接连接到芯片上的引脚。
添加这个使我开始在240MHz部分失败时序。
同样，新部分和旧部分之间的唯一连接是60MHz时钟和复位线。
任何人都可以建议我试着再次开始计时吗？
或者我可以在ISE中使用哪些选项？
我可以共享（私下）代码 - 但我怀疑这对于某人来说是很费时的。
谢谢！



以下为原文

I have a Spartan 6 that is mostly clocked at 60MHz, but has one sec tion that is clocked at 240MHz (along with 60MHz). That section is very separate from everything else.

Today I tried to add in a new module to my project. It is a SPI slave controller - essentially it takes a SPI command and writes to or reads from a couple of registers. Very simple. The instantiation of it has only 6 ports - the 4 SPI lines (MISO, MOSI, SCK, and nCS), reset, and clock (60MHz). The SPI lines are directly connected to pins on the chip.

Adding this in makes me start to fail timing in the 240MHz section.

Again, the only connection between the new section and the old section is the 60MHz clock and the reset line.

Can anybody suggest what I might look at to try to start meeting timing again? Or perhaps are there options within ISE that I can play with?

I can share (privately) the code - but I suspect that that would be time consuming for somebody to look at.

Thank you!