你好，我在lab中的 traffic monitoring中按照user guide中的步骤进入debug模式，在进行到group cores and connect 的步骤中connect target出错
错误如下：
Error connecting to the target:
(Error -275 @ 0x0)
The attempt to poll a target device exceeded its timeout limit.
The utility or debugger has requested that a target device be
repeatedly accessed for a specific data or status value.
This has failed because the built-in limit for the maximum number
of attempts when polling the JTAG scan-path has been exceeded.
(Emulation package 8.0.27.9)
C674X_0: GEL: Error while executing OnPreTargetConnect(): Target failed to read 0x500006CC@System_View
at gempwrsmcfg4_rd=*((unsigned int *) (0x50000400U+0x000002CCU)) [xwr16xx_dss_csdap.gel:152]
at DSS_PreConnect_CheckResetStatus()
at GEL_EvalOnTarget("CS_DAP_0", "DSS_PreConnect_CheckResetStatus()", 1) [xwr16xx_dss_init.gel:11]
at OnPreTargetConnect()
C674X_0: Error connecting to the target: (Error -275 @ 0x0) The attempt to poll a target device exceeded its timeout limit. The utility or debugger has requested that a target device be repeatedly accessed for a specific data or status value. This has failed because the built-in limit for the maximum number of attempts when polling the JTAG scan-path has been exceeded. (Emulation package 8.0.27.9)
而jtag在test connection是OK的。
麻烦请问这是什么问题，板子是第一代板子，模式连接是sop0 和sop1，烧的程序是SDK1.2（SDK1.1也是一样），然后烧录xwr16xx_ccsdebug.bin
谢谢
