CCS JTAG测试连接,
The JTAG IR Integrity scan-test has failed.
Test 1 Word 2: scanned out 0xFFFFFFFF and scanned in 0x00000000.
有时
Test 1 Word 0: scanned out 0xFFFFFFFF and scanned in 0x500114AA.或者其他非0的数
请问是什么原因,虚焊还是芯片异常
谢谢