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UART boot (DM6467)

Hi.

 

I developed a custom board using DM6467.

 

Booted using UART0, I get two 'BOOTME's.

 

The problem is as following...

When flashing through serial using sfh_DM646x.exe, I get the following message :

:-----------------------------------------------------

:   TI Serial Flasher Host Program for DM646x

:   (C) 2009, Texas Instruments, Inc.

:   Ver. 1.50

:-----------------------------------------------------

:

:Globally erasing NAND flash.

:

:Attempting to connect to device COM4...

:Press any key to end this program at any time.

:

:Waiting for the DM646x...

:BOOTME commmand received. Returning ACK and header...

:ACK command sent. Waiting for BEGIN command...

 

I guess....
1. DSP sent 'BOOTME' and HOST received it.
2. HOST returned ACK and wait BEGIN command
3. DSP didn't send BEGIN, and this problem may be related to the "two BOOTME's"
I need your help
Thanks,
Byeongchan Jeon