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TMS320C6678: Is there efuse can be read out for chip identification?

Part Number: TMS320C6678

Tool/software:

Dear champ, 

Customer is using TMS320C6678ACYPA25 but seeing same device can only run at 1Ghz but fail at 1.25Ghz. 

Customer would like to learn if there is any register or eFuse can be read to make sure the chip/die is actually 1.25Ghz version. 

BR, Rich