Cactus 250SH series, Product Manual

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Cactus Technologies, Limited
COMMAND Code
Write DMA Ext 35h
Write FPDMA Queued 61h
Write Log Ext 3Fh
Write Multiple C5h
Write Multiple Ext 39h
Write Sector(s) 30h
Write Sector(s) Ext 34h
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 5-7. All reserved
bits or words are zero. Table 5-7 is the definition for each field in the Identify Drive
Information.
Table 5-7. Identify Drive Information
Word
Address
Default Value Total Bytes Data Field Type Information
0 0040H 2 General configuration bit-significant information.
1 3FFFH 2 Default number of cylinders; capacity dependent.
2 C837H 2 Reserved
3 0010H 2 Default number of heads; capacity dependent.
4-5 0H 4 Retired
6 003FH 2 Default number of sectors per track; capacity dependent.
7-8 0h 4 Reserved
9 0H 2 Retired
10-19 aaaa 20 Serial number in ASCII (Right Justified).
20-21 0H 4 Retired
22 0H 2 Obsolete
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: 2
48 4000H 2 Trusted Computing Feature Set
49 2F00H 2 Capabilities: DMA, LBA, IORDY supported
50 4000H 2 Capabilities: device specific standby timer minimum
51 0H 2 Obsolete
52 0H 2 Obsolete
53 0007H 2 Words 88 and 70:64 valid
54 3FFFH 2 Obsolete
55 0010H 2 Obsolete
56 003FH 2 Obsolete
57-58 0H 4 Obsolete
59 0101H 2 Number of sectors transferred per interrupt
60-62 XXXX 6 Total number of sectors addressable
63 0007H 2
Multiword DMA modes 0-2 are supported; upper byte reflects currently
selected MWDMA mode.
64 0003H
2
Advanced PIO modes supported (modes 3 and 4)
65 0078H 2 Minimum MWDMA cycle time per word is 120ns.
66 0078H 2 Recommended MWDMA cycle time is 120ns.
67 0078H 2 Minimum PIO cycle time without IORDY flow control is 120ns.
68 0078H 2 Minimum PIO cycle time with IORDY flow control is 120ns.
Cactus Technologies Limited Commercial Grade -250SH Series SSD Product Manual v2.1 18