Cactus 900S Series, Product Manual

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Cactus Technologies, Limited
Cactus Technologies Limited -900 Series Industrial Grade SATA SSD Product Manual v1.0 23
COMMAND Code FR SC SN CY DH
Write Buffer E8h - - - - D
Write DMA Cah, CBh - Y Y Y Y
Write DMA Ext 35h - Y Y Y D
Write FPDMA Queued 61h Y Y Y Y D
Write Multiple C5h - Y Y Y Y
Write Multiple Ext 39h - Y Y Y D
Write Sector(s) 30h, 31h - Y Y Y Y
Write Sector(s) Ext 34h - Y Y Y D
Write Verify 3Ch - Y Y Y Y
Definitions: FR = Features Register, SC = Sector Count Register, SN = Sector Number Register, CY =
Cylinder Registers, DH = Drive/Drive/Head Register.
Y—The register contains a valid parameter for this command. For the Drive/Head Register Y means both
the drive and head parameters are used; D—only the drive parameter is valid and not the head
parameter.
Note: 1. For SATA drives, the drive number is always 0.
5.1.1. Identify Drive—ECH
The Identify Drive command 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 buffer have the arrangement and meanings defined in Table 5-8. All reserved bits or words
are zero. Table 5-8 is the definition for each field in the Identify Drive Information.
Table 5-8. Identify Drive Information
Word Address Default Value Total Bytes Data Field Type Information
0 045AH 2 General configuration bit-significant 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 XXXXH 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 Justified).
20 0002H 2 Buffer type (dual ported multi-sector)
21 0001H 2 Buffer size in 512 bytes increments
22 0004H 2 # of ECC bytes passed in R/W 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 Justified) Big Endian Byte Order in Word.
47 8001H 2 Maximum number of sectors on Read/Write Multiple command: 1
48 0000H 2 Double Word not supported.