请问FX2的不同版本之间有什么特别的区别？

你好，
我正在研究一个项目，我们用一个外部时钟源在GPIF模式中把AptiNA光学传感器连接到FX2。
我们连接
RealIX有效到RDY0，
框架对RDY1有效
到IFCK的像素时钟
像素数据总线到D0—D7
FX2的引脚。
它在CY3681-开发工具包上工作得很好，带有128个引脚的FX2的一个相当旧的修订。
然而，在另一块板上，有了56个引脚的新FX2LP，当我从外部时钟源（传感器生成的像素时钟）发出GPIF时，GPIF波一旦启动，就永远不会完成。
当我实验切换GPIF时钟源到内部时钟，波将完成。在这种情况下，数据是无意义的（因为GPIF没有同步到像素时钟），但是我可以看到，我的决定状态（等待帧的开始和行的开始）工作…
在两个板上，我已经将逻辑分析仪连接到FX2的各个引脚，并且可以看到来自传感器的信号是相同的。在开发板上，我看到波浪的状态也在变化。我不能用FX2的56针版本在另一个板上进行验证。
谁能给我一些提示，我应该去哪里看呢？
FX2的不同版本之间有什么特别的区别，这可能会导致这样的问题吗？
非常感谢您的帮助。



     以下为原文
  Hi,
    I'm working on a project, where we connected an Aptina optical sensor to the FX2 in GPIF-mode with external clock-source.
    We connected
    the LINE_VALID to RDY0,
    the FRAME_VALID to RDY1
    the pixel-clock to the IFCLK
    and the pixel-data bus to D0-D7
    pins of the FX2.
    It works really well on the CY3681 developmen-kit with an rather old revision of the FX2 with 128-pins.
    However on other board, with rather new FX2LP with 56-pins, the GPIF-wave once started will never get done, when I source the GPIF from the external clock-source (sensor generated pixel-clock).
    When I experimentally switch the GPIF clock-source to internal clock, the wave will get done. In this case, the data are nonsense (because the GPIF is not synchronized to the pixel-clock) but I can see that my decision states (waiting for the start of the frame and start of the line) works...
    On both boards I have connected the logic analyzer to the respective pins of the FX2 and can see that the signals from the sensor are the same. On the development-board, I see the states of the wave changing too. This I can't verify on the other board with the 56-pin version of FX2.
    Can anybody please give me any hint, where else I should look?
    Are there any specific differences between the different versions of the FX2, that might cause such a problem?
    Any help is greatly appreciated.