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TMS320C6416T JTAG连接不上,帮看是什么原因.谢谢

Hi,各位TI专家。目前在做一个通信的基站项目,使用到TMS320C6416T芯片,在新改的板子贴片回来,出现连接不了JTAG(目前贴2pcs均相同现象),

提示:

Error connecting to the target:

Error 0x80002262/-116

Fatal Error during: Memory, Execution, Initialization, OCS, Control,

This error was generated by TI's USCIF driver.

SC_ERR_CTL_TRASH <-116>

A bad parameter value was detected within an internal data-structure of Unified-SCIF. The controller or Unified-SCIF may be in an invalid......

如下图提示。上个版本是可以正常连接,改板未修改相关DSP部分。目前测试不能连接的板子,JTAG部分焊接OK,复位,时钟OK,CLKOUT正常输出,电源OK。Bootmode状态OK。

现在该如何分析找问题呢?