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ATA COMMAND BLOCK AND SET DESCRIPTION SSD-CXXX(I)-3150 DATA SHEET
SILICONSYSTEMS PROPRIETARY
This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.
All unauthorized use and/or reproduction is prohibited.
3150C-10DSR PAGE 64 FEBRUARY 2, 2009
Identify Drive — Drive Attribute Data
Table 52: Identify Drive — Drive Attribute Data
Word
Address
Data Default Bytes Data Description
0044Ah (fixed
ID bit) in IDE
mode
848A
(removable ID
bit) in PCMCIA
memory and I/
O modes
2 General configuration bit information
• 15: Non-magnetic disk
• 14: Formatting speed latency
permissible gap needed
• 13: Track Offset option supported
• 12: Data Strobe Offset option supported
• 11: Over 0.5% rotational speed
difference
• 10: Disk transfer rate >10Mbps
• 9: 10Mbps >= disk transfer rate >5Mbps
• 8: 5Mbps >= disk transfer rate
• 7: Removable cartridge drive
• 6: Fixed drive
• 5: Spindle Motor Control option
executed
• 4: Over 15μs changing head time
• 3: Non-MFM encoding
• 2: Soft sector allocation
• 1: Hard sector allocation
•0: Reserved
1 XXXXh 2 Number of cylinders
2 0000h 2 Reserved
3 00XXh 2 Number of heads
4 0000h 2 Number of unformatted bytes per track
5 XXXXh 2 Number of unformatted bytes per sector
6 XXXXh 2 Number of sectors per track
7-8 XXXXh 4 Number of sectors per device
9 0000h 2 Reserved
10-19 XXXXh 20 Serial number