Example Program Algorithm - Motorola ColdFire MCF5281 User Manual

CLOCK REGISTER
WRITTEN CHECK
PROTECTION
VIOLATION CHECK
ERROR CHECK
ADDRESS, DATA,
COMMAND BUFFER
EMPTY CHECK
FOR COMMAND
COMPLETION CHECK
MOTOROLA
START
READ CFMCLKD
NO
DIVLD SET?
YES
WRITE CFMCLKD
READ CFMUSTAT
CBEIF
SET?
YES
WRITE PROGRAM DATA
1.
TO ARRAY ADDRESS
WRITE PROGRAM COMMAND 0x20
2.
TO CFMCMD
WRITE 0x80 TO CLEAR CFMUSTAT
3.
CBEIF BIT
READ CFMUSTAT
PVIOL
SET?
NO
ACCESS ACCERR
SET?
NO
CBEIF
SET?
NO
READ CFMUSTAT
BIT POLLING
CCIF
SET?
YES
EXIT
Figure 6-13. Example Program Algorithm
Chapter 6. ColdFire Flash Module (CFM)
NO
NOTE: COMMAND SEQUENCE
ABORTED BY WRITING 0x00
TO CFMUSTAT
NOTE: COMMAND SEQUENCE
ABORTED BY WRITING 0x00
TO CFMUSTAT
YES
WRITE 0x20 TO CLEAR
CFMUSTAT PVIOL BIT
YES
WRITE 0x10 TO CLEAR
CFMUSTAT ACCERR BIT
YES
NO
CFM Operation
YES
NEXT WRITE?
NO
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