128 KByte Flash Module (S12FTMRC128K1V1)
Table 13-52. Verify Backdoor Access Key Command Error Handling
Register
Error Bit
Error Condition
Set if CCOBIX[2:0] != 100 at command launch
Set if an incorrect backdoor key is supplied
ACCERR
Set if backdoor key access has not been enabled (KEYEN[1:0] != 10, see
Section 13.3.2.2)
FSTAT
Set if the backdoor key has mismatched since the last reset
FPVIOL
MGSTAT1
MGSTAT0
None
None
None
13.4.5.12 Set User Margin Level Command
The Set User Margin Level command causes the Memory Controller to set the margin level for future read
operations of the P-Flash or D-Flash block.
Table 13-53. Set User Margin Level Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
Global address [17:16] to identify the
000
001
0x0D
Flash block
Margin level setting
Upon clearing CCIF to launch the Set User Margin Level command, the Memory Controller will set the
user margin level for the targeted block and then set the CCIF flag.
NOTE
When the D-Flash block is targeted, the D-Flash user margin levels are
applied only to the D-Flash reads. However, when the P-Flash block is
targeted, the P-Flash user margin levels are applied to both P-Flash and D-
Flash reads. It is not possible to apply user margin levels to the P-Flash
block only.
Valid margin level settings for the Set User Margin Level command are defined in Table 13-54.
Table 13-54. Valid Set User Margin Level Settings
CCOB
Level Description
(CCOBIX=001)
0x0000
0x0001
0x0002
Return to Normal Level
User Margin-1 Level(1)
User Margin-0 Level(2)
1. Read margin to the erased state
2. Read margin to the programmed state
S12P-Family Reference Manual, Rev. 1.13
464
Freescale Semiconductor
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