C6000 DSP仿真器连接问题

您好：我的TMS320C6424 DSP之前连接仿真器一直是好的，现在突然不行了，提示的错误是：C64XP 0：Error connecting to the target (Error -1143 @0x0))Device core was stalled ,and recovery was successful .No user action required. 现在一直连接不上求指导，谢谢。