MPC5643L FCCU 进不去CONFIG state

FCCU.CTRLK.R = 0x913756AF;
FCCU.CTRL.B.OPR = 0b00001; //00001 Set the FCCU into the CONFIG state [OP1].
while(FCCU.CTRL.B.OPS != 0b11){;}

结果:OPS 显示为10 Aborted.
是因为configuration locked吗,如果是,怎么解决呢?

http://bbs.elecfans.com/jishu_910467_1_4.html