Instruction Manual

503 Series Industrial Grade CompactFlash Card Product Manual v2.1Cactus Technologies
®
50
bit[3:2] These two bits determine the type of operation to be performed for sequence 2.
The coding is the same as for sequence 3.
bit[1:0] These two bits determine the type of operation to be performed for sequence 1.
The coding is the same as for sequence 3.
For sequence 1, an optional ‘count’ can be specied. If count=0, the sequence is performed only
once. For non-zero counts, the sequence is repeated for count+1 times.
By default, if none of the optional parameters are specied, the rmware will perform an erase
only operation when this command is issued.
Parameter 3 is used to select the mode of erasure. If parameter 3 is set to 0xC3, the purge
operation will erase everything except the rmware blocks. If parameter 3 is set to any other
value, the purge operation will erase everything, including rmware blocks.
The CTPurge™ command structure allows the operation to meet a variety of specied
sanitizing procedures. The table below shows the command entry for each type of specied
sanitizing procedure.
6.2.2. Standard Compliance
Operation Opcode Parameter 1 Parameter 2 Count
Erase only (default) 0x00 0x00 0x00 0x00
Erase and overwrite with random
data once
0x01 0x00 0x00 0x00
Erase and overwrite with random
data N times
0x01 0x00 0x00 N-1
USA-AF AFSSI 5020
Erase and overwrite with zeroes,
then erase and overwrite with
ones, then erase and overwrite
with random data
0x9E 0x00 0xFF 0x00
USA Navy NAVSO P-5239-26
Erase and overwrite with random
data, then erase and overwrite with
random data again
0x45 0x00 0x00 0x00
DoD 5220.22-M
Erase and overwrite with single
character, then erase again
0x42 Character 0x00 0x00
NSA Manual 130-2
Erase and overwrite with random
character 2 times, then erase and
overwrite with a character
0x49 Character 0x00 0x00
NSA Manual 9-12
Erase and overwrite with single
character
0x02 Character 0x00 0x00
USA-Army 380-19
Erase and overwrite with random
data, erase and overwrite with a
character, then erase and overwrite
with complement of the character
0xb9 Character
Complement of
Character
0x00