Owner manual
300/300-P Series Industrial Grade SSD Product Manual v2.0Cactus Technologies
®
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This command writes the desired head and cylinder of the selected drive with a vendor unique
pattern. To remain host backward compatible, the drive expects a sector buer of data from the
host to follow the command with the same protocol as the Write Sector(s) command although the
information in the buer is not used by the drive. If LBA=1 then the number of sectors to format is
taken from the Sec Cnt register (0=256).
5.1.5. Identify Drive-ECH
Bit -> 7 6 5 4 3 2 1 0
Command (7)
ECH
C/D/H (6)
X X X Drive X
Cyl High (5)
X
Cyl Low (4)
X
Sec Num (3)
X
Sec Cnt (2)
X
Feature (1)
X
Table 5-15. Identify Drive
The Identify Drive command in Table 5-15 enables the host to receive parameter information from
the drive. This command has the same protocol as the Read Sector(s) command. The parameter
words in the buer have the arrangement and meanings dened in Table 5-16. All reserved bits or
words are zero. Table 5-16 is the denition for each eld in the Identify Drive Information.
Table 5-16. Identify Drive Information
Word
Address
Default
Value
Total
Bytes
Data Field Type Information
0 044AH 2 General conguration bit-signicant information.
1 XXXXH 2 Default number of cylinders; capacity dependent.
2 0000H 2 Reserved.
3 00XXH 2 Default number of heads; capacity dependent.
4 0000H 2 Number of unformatted bytes per track.
5 0200H 2 Number of unformatted bytes per sector.
6 00XXH 2 Default number of sectors per track; capacity dependent.
7-8 XXXXH,XXXXH 4
Number of sectors per drive (Word 7 = MSW, Word 8 = LSW);
capacity dependent.
9 0000H 2 Reserved.
10-19 aaaa 20 Serial number in ASCII (Right Justied).
20 0002H 2 Buer type (dual port).
21 0001H 2 Buer size in 512 byte increments.
22 0004H 2 Number of ECC bytes passed on Read/Write Long Commands.
23-26 aaaa 8 Firmware revision in ASCII . Big Endian Byte Order in Word.
27-46 aaaa 40
Model number in ASCII (Left Justied) Big Endian Byte Order in
Word.
47 800XH 2
Maximum number of sectors on Read/Write Multiple command;
capacity dependent.