TI中文支持网This error is generted by TI's USCIF driver or utilities.
The value is '-181'（0xffffff4b）.
The title is 'SC-ERR_CTL_NO_TRG_CLOCK'.
The explanation is:
The controller has detected a dead JTAG clock.
The user must turn-on or connect the JTAG clock for the target.
[End: Wintcch Digital XDS 560v2 STM USB Emulator_0]
Thomas Yang1：
This error is shown when the JTAG debug probe does not receive a clock signal on the RTCK pin. It can have many reasons:
The speed of TCLK is configured for a rate too high for the board and device
The type of TCLK is configured for either fixed or adaptive but is unsupported by the device
The board PCB or device does not tie the TCK pin to the RTCK pin详情请参阅如下链接
http://processors.wiki.ti.com/index.php/Debugging_JTAG_Connectivity_Problems?keyMatch=dead JTAG clock.&tisearch=Search-EN
