各位专家:
你好,我们的DSP芯片最近很奇怪,本身配置的小模式,结果突然变成大模式了,没找到原因不说,现在索性根本连不上JTAG仿真器了,测了一下周围电路,发现上下拉电阻不起作用了,配置DSP的BEA20,BEA19-18,BEA9-8的上下拉电阻与DSP相连的一侧示波器测出的都是【不规则的方波】!
另外就是,电源、时钟都是对的
请专家解答一下,什么情况会导致这个状况发生?!
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补充一下,这个是仿真器连接失败的错误提示:
Error connecting to the target:
Error 0x80003240/-116
Fatal Error during: Initialization, OCS, Target, 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 state.
Sequence ID: 0
Error Code: -116
Error Class: 0x80003240
I/O Port = 240