Information

FTFL module occurs. If the entire 8-byte key is all zeros or all ones, the Verify Backdoor
Access Key command fails with an access error. The CCIF flag is set after the Verify
Backdoor Access Key operation completes.
Table 28-64. Verify Backdoor Access Key Command Error Handling
Error Condition Error Bit
The supplied key is all-0s or all-Fs FSTAT[ACCERR]
An incorrect backdoor key is supplied FSTAT[ACCERR]
Backdoor key access has not been enabled (see the description of the FSEC register) FSTAT[ACCERR]
This command is launched and the backdoor key has mismatched since the last power down
reset
FSTAT[ACCERR]
28.4.12.14 Swap Control Command
The Swap Control command handles specific activities associated with swapping the two
logical program flash memory blocks within the memory map.
Table 28-65. Swap Control Command FCCOB Requirements
FCCOB Number FCCOB Contents [7:0]
0 0x46 (SWAP)
1 Flash address [23:16]
2 Flash address [15:8]
3 Flash address [7:0]
1
4
Swap Control Code:
0x01 - Initialize Swap System
0x02 - Set Swap in Update State
0x04 - Set Swap in Complete State
0x08 - Report Swap Status
Returned values
5
Current Swap State:
0x00 - Uninitialized
0x01 - Ready
0x02 - Update
0x03 - Update-Erased
0x04 - Complete
6
Current Swap Block Status:
0x00 - Program flash block 0 at 0x0_0000
0x01 - Program flash block 1 at 0x0_0000
Table continues on the next page...
Chapter 28 Flash Memory Module (FTFL)
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 663