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TMS320C6748: DSP启动失败,报错6305

Part Number: TMS320C6748

错误信息:Error connecting to the target: (Error -6305) PRSC module failed to write to a router register. (Emulation package 9.8.0.00235)

板子是自己做的,BOOT接法如下:

BOOT pins 与 复位脚都由单片机控制,3V3,经测量,几个引脚都输出正常,选择的是DEBUG模式

单片机的上电顺序如下:rst拉低,延时30ms,设置boot,延时50ms,rst拉高(延时时间没有依据,随手设置的,是否有影响)

还测了DSP输入时钟,示波器测量如下:

周期没有问题,频率24MHz,波峰和波谷之间是2.5V~4V

有没有DEBUG的建议?谢谢