Seagate ST9250827AS Momentus 5400.4 SATA Product Manual - Page 34
Identify Device command - firmware
UPC - 836367003305
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4.3.1 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 on page 27. 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. See Section 2.0 on page 3 for default parameter settings. 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 53 Words 54-58, 64-70 and 88 are valid 54 Number of current logical cylinders 55 Number of current logical heads 56 Number of current logical sectors per logical track Value 0C5AH 16,383 0000H 16 0000H 0000H 003FH 0000H ASCII 0000H 0400H 0000H x.xx ST9250827AS ST9200827AS ST9160827AS ST9120817AS 8010H 0000H 2F00H 0000H 0200H 0200H 0007H xxxxH xxxxH xxxxH 26 Momentus 5400.4 SATA Product Manual, Rev. A