IWR1443在CCS环境下可以连接，但无法LOAD FAILED

Cortex_R4_0: Trouble Writing Memory Block at 0x0 on Page 0 of Length 0x3c: (Error -1065 @ 0x0) Unable to access device memory. Verify that the memory address is in valid memory. If error persists, confirm configuration, power-cycle board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 8.1.0.00007)
Cortex_R4_0: File Loader: Verification failed: Target failed to write 0x00000000
Cortex_R4_0: GEL: File: C:\tiworkspace\level_sense_demo\Debug\level_sense_demo.xer4f: Load failed.