Seagate ST9250412AS Momentus 7200 FDE.1 SATA Product Manual - Page 42
Identify Device command
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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) 47 (Bits 7-0) Maximum sectors per interrupt on Read multiple and Write multiple (16) 48 Reserved 49 Standard Standby timer, IORDY supported and may be dis- abled 50 ATA-reserved 51 PIO data-transfer cycle timing mode 52 Retired Value 0C5AH 16,383 0000H 16 0000H 0000H 003FH 0000H ASCII 0000H 0400H 0000H x.xx ST9320424AS ST9250424AS ST9160414AS ST9120414AS ST9320424ASG ST9250424ASG ST9160414ASG ST9120414ASG ST980414ASG 8001H 0000H 2F00H 0000H 0200H 0200H 36 Momentus 7200 FDE.1 SATA Product Manual, Rev. B