芯片为TMS320F28069，在使用XDS100V3连接时，提示
The explanation is:
The user selected specific frequency failed the scan-path reliability test.
The utility or debugger requested the JTAG controller and cable,
that generate the JTAG clock, to provide a user selected fixed
frequency. The built-in scan-path reliability test has failed.
This indicates that the JTAG controller and its cable cannot
reliably communicate with the target system at that frequency.这样的错误，使用XDS100V1可成功连接，请问为什么？问题出在哪？