UART BOOT 在AISgen开始没有使能CRC时，通过UART BOOT HOST.bin正常执行，但是在使能CRC后。bin发送就出现错误，然后不使能CRC再发送。bin还是出现如下错误，具体什么原因呢？
(File IO): Read 5940 bytes from file G:\DSP\MEMS3\flash_SPI\sdram\Debug\11.bin.
(Serial Port): Opening COM1 at 115200 baud...
(AIS Parse): Read magic word 0x41504954.
(AIS Parse): Performing Start-Word Sync...
(Serial Port): Read error! (The operation has timed out.)
(AIS Parse): I/O Error in read!
(AIS Parse): Boot aborted.
(Serial Port): Closing COM1.
