TMS320F2800137: DCSM

youjun zhang

Intellectual 600 points

Part Number: TMS320F2800137
Other Parts Discussed in Thread: UNIFLASH

Tool/software:

hi expert

when i used dcsm,the setting in ccs as follows

but i used uniflash to read the value of 0x78000,it is different,in ccs value = 3FFF,in uniflash = 0000,why?

dcsm.asm setting as follows:

over 1 year ago

0 Luke Jones over 1 year ago

TI__Mastermind 28300 points

Hi Youjun,

When the DCSM is secure, all the memory locations in user OTP will show up as all 0s except for the CSM passwords. You must unlock the DCSM to see the correct values in Uniflash.

You may need to disable the "reset target before flash programming operations" option to do this successfully.

Thank you,

Luke

0 youjun zhang over 1 year ago in reply to Luke Jones

Intellectual 600 points

the DCSM is secure,when is used the Uniflash,writed default CSM passwords,it also can see the CSM passwords,why?

0 Luke Jones over 1 year ago in reply to youjun zhang

TI__Mastermind 28300 points

Hi Youjun,

From looking at address 0x78020, it seems that custom passwords have been programmed. You must use these custom passwords to unlock the device to be able to view the OTP contents.

Thank you,

Luke

0 youjun zhang over 1 year ago in reply to Luke Jones

Intellectual 600 points

hi Luke,

my question is when i used the wrong passwords,i also can see the correct passwords at the address of 0x78020 by uniflash,why?

+1 Luke Jones over 1 year ago in reply to youjun zhang

TI__Mastermind 28300 points

Hi Youjun,

When PSWDLOCK is disabled, the passwords at address 0x78020 will ALWAYS be visible, even if the DCSM is locked. You must enable PSWDLOCK to secure your passwords.

Thank you,

Luke

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TMS320F2800137: DCSM