Seagate ST9500421AS Momentus 7200 FDE.2 SATA Product Manual - Page 39
Identify Device command
UPC - 000000000000
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4.2.5 Identify Device command The Identify Device command (command code ECH) transfers information about the drive to the host following power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table below. All reserved bits or words should be set to zero. Parameters listed with an "x" are drive-specific or vary with the state of the drive. The following commands contain drive-specific features that may not be included in the Serial ATA specification. Word 0 1 2 3 4 5 6 7-9 10-19 20 21 22 23-26 27-46 Description Configuration information: • Bit 15: 0 = ATA; 1 = ATAPI • Bit 7: removable media • Bit 6: removable controller • Bit 0: reserved Number of logical cylinders ATA-reserved Number of logical heads Retired Retired Number of logical sectors per logical track: 63 Retired Serial number: (20 ASCII characters, 0000H = none) Retired Retired Obsolete Firmware revision (8 ASCII character string, padded with blanks to end of string) Drive model number: (40 ASCII characters, padded with blanks to end of string) Value 0C5AH 16,383 C837H 16 0000H 0000H 003FH 0000H ASCII 0000H 8000H 0004H x.xx ST9500421AS ST9500426ASG ST9500422AS ST9500421AS ST9320427ASG ST9320426ASG ST9320426AS ST9250464ASG ST9250414ASG ST9250412AS ST9250411AS ST9160419ASG ST9160418ASG ST9160413AS 47 (Bits 7-0) Maximum sectors per interrupt on Read multiple 8001H and Write multiple (16) 48 Reserved 4001H 49 Standard Standby timer, IORDY supported and may be dis- 2F00H abled Momentus 7200 FDE.2 SATA Product Manual, Rev. B 33