CCS3.3开发环境，之前用的好好的，昨天突然连接不上，弹出如下报错：
Error connecting to the target:
Error 0x80000240/-233
Fatal Error during: Initialization, OCS,
This error was generated by TI's USCIF driver.
SC_ERR_PATH_BROKEN <-233>
The JTAG IR and DR scan-paths cannot circulate bits, they may be broken.
An attempt to scan the JTAG scan-path has failed.
The target's JTAG scan-path appears to be broken
with a stuck-at-ones or stuck-at-zero fault.
retry后弹出如下报错：
Error connecting to the target:
Error 0x80000200/-1047
Fatal Error during: OCS,
PTI_ERR_EMU_CLOSE Error Occured at 0x00000000
连接其他板卡都是正常，应该能排除仿真器的问题。是JTAG接口出问题了么？
PS：我记得TI好像有一篇解释报错信息的文档，能贴个链接么?