如何在SPARTAN 6 phy的GEN1和GEN2时钟生成之间切换

嗨，
我的名字是dasarath，
我正在将Spartan 6 phy集成到SATA（Tp + Link + Mac图层）Gen 2 for HOST。
根据SATA协议，完成的OOB是GEN 1，并以协商的速度重置事物。
例如，如果设备支持GEN2，如果设备支持GEN2，则在GEN1完成的GEN2 phyob将在GEN 2成功进行协商，如果设备仅支持GEN1，则应在GEN1成功进行速度协商。
在Virtex 6中，我发现TXRATE和RXRATE端口，为这些端口驱动适当的值，能够生成GEN1和GEN2时钟。
斯巴达6中有这样的港口吗？
如果不是，我们如何在SPARTAN 6 phy的GEN1和GEN2时钟生成之间切换。
请支持我。
感谢您，
问候
P Dasarath



以下为原文

Hi,
My name is dasarath,

I am integrating the Spartan 6 phy to SATA ( Tp+Link+Mac layers) Gen 2 for HOST.
As per SATA protocol OOB done is GEN 1 and reset of things done at negotiated speed. for example for GEN2 phy oob done at GEN1 speed and speed negotiation should be successful at GEN  2 if  device supports GEN2, if device supports only GEN1 speed negotaition should be successful at GEN1.

In Virtex 6 i found ports TXRATE and RXRATE, driving proper values to these ports phy able to generate the GEN1 and GEN2 clocks.
Is there such ports in spartan 6?
If no, How can we switch between GEN1 and GEN2 clock generation for SPARTAN 6 phy.

Kindly support me .

Thanking you,

regards
P Dasarath