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how to recover "Censorship Control Word" on MPC5534

Question asked by jianhua Chen on Apr 1, 2011
Latest reply on Apr 6, 2011 by David Mcmenamin

when i try to program the internal flash on MPC5534 with "progppcnexus"(P&E), i have chosen " 5534_1k_shadow.PCP" instead of "5534_1meg.PCP" which actually will program the shadow block of the flash. And before program, i push the Erase button first.  this led to that the value in 0x00FFFFE0 changed from "55AA" to "FFFF". according to MPC5534RM 《13.4.2.6.2 Flash Disable》,in this configuration either the flash is disabled(BOOTCFG[1] = 0) or the Nexus is disabled(BOOTCFG[1] = 1)  after boot.(MPC5534 208pin dose not have BOOTCFG[0]) which mean i can't program the internal flash with my usb multilink again.

 

i have already create an elf file which allocate the  value "55AA" in 0x00FFFFE0, is there any chance for me to recover the "Censorship Control Word" in my MPC5534? Or i have to lost my only two MPC5534 chip.

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