Owner's manual
503/503-P1 Series Industrial Grade SSD Product Manual v2.0Cactus Technologies
®
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The host can initiate a CTPurge™ operation by issuing the following Vendor Specic Command:
7.2.1. Command Structure
Register 7 6 5 4 3 2 1 0
Features
Count
Sector Count
Opcode
Sector Number
Parameter 1
Cylinder Low
Parameter 2
Cylinder High
Reserved
Drive/Head
1 0 1 D 0 0 0 0
Command
82h
The Opcode eld is partitioned into groups of 2 bits each with the following denitions:
bit[7:6] These two bits determine how many sequences to perform. The coding is as
follows:
00 1 sequence
01 2 sequences
10 3 sequences
11 reserved
bit[5:4] These two bits determine the type of operation to be performed for sequence 3.
The coding is as follows:
00 erase only
01 erase and overwrite with random data
10 erase and overwrite with character dened in parameter 1
11 erase and overwrite with character dened in parameter 2
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 specied. 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 specied, the rmware will perform an erase
only operation when this command is issued.