We're looking into using the JTAG security fuse in our product to prevent snooping (namely to safeguard an encryption key). However, I've been unable to find much information on this in the TI docs. I thought I had read many months ago that once the security fuse is blown, it could be reset by erasing the chip. I'm left with a few questions...
Is there anyway for mspgcc to program this fuse? It looks like it is JTAG adapter specific. Further, it looks like the TI USB FET won't work. Once blown, can the chip (and fuse) be erased via JTAG or firmware? It looks like it can only be done with the BSL. Can the fuse be set by firmware? Doesn't look like it... I'm about to send off the production board, but it looks like I'll have to add the BSL connector. I should have looked into these issues before laying out the board. TonyB
